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2023 Water Quality Report

 
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JEA Lab
A technician at JEA's Springfield Laboratory tests drinking water samples as part of its reliability process.

Welcome

Dear Valued JEA Water Customer

We're pleased to present JEA's 2023 Annual Water Quality Report.

As part of our ongoing commitment to sustainability and transparency, JEA is keeping you informed about water services we deliver to you every day. We are committed to providing you with a safe, reliable and sustainable supply of drinking water. That's why we constantly confirm your water quality by testing more than 45,000 water samples every year.

All of the water we deliver to you is drawn from the pristine Floridian aquifier. This report provides information about JEA's water treatment systems, results from our water quality testing and answers to some frequently asked questions about your water supply.

We encourage you to explore the report and learn more about water quality in our community and JEA's role as a steward of our natural resources and the environment.

JEA Water Facts

FDEP Source Water Assessments

In 2023, the Florida Department of Environmental Protection performed Source Water assessments to identify potential sources of contamination in the vicinity of JEA wells. Potential contamination sources include landfills, fuel storage tanks, dry cleaning facilities and wastewater disposal areas. Visit https://prodapps.dep.state.fl.us/swapp to view assessment results online.

System # of Potential Sources Susceptibility Level
Major Grid 121 Low-Moderate
Mayport 2 Low
Lofton Oaks Grid 10 Low
Ponte Vedra Grid 4 Low
Ponce de Leon Grid 4  Low

JEA's Water System Process

The JEA drinking water system consists of wells, water treatment plants, the distribution grid of pipelines, and finally the customers’ meters. We have over 130 wells that withdraw water from the Floridan aquifer, about 1,000 feet below land surface. The fresh, clean water is pumped from the well fields to one of 39 water treatment plants, where it then flows through an aerator to remove the sulfur (rotten egg) odor. The water leaves the reservoirs and is disinfected with chlorine per health regulations before it enters over 4,900 miles of water lines for distribution to our customers. Ozone is also utilized at two plants for sulfide removal and to improve taste and odors.

 

H2.0 Purification

Planning for JEA's water purification program began in 2014 with a three-phase multi-year program consisting of pilot testing, demonstration, and implementation. JEA has branded the water purification program H2.0®, as a nod to the 2.0 version of JEA's water (H20) supply. Construction began on phase two - JEA H2.0® Purification Center - in September 2023, with the planned opening due late 2025. 

The purification process to be demonstrated at the Center is similar to what nature does through rainfall replenishing the aquifer - only with a smaller footprint, in a shorter amount of time. This multi-barrier purification process is based on membrane and advanced oxidation technology which will provide JEA long-term aquifer sustainability to meet future water needs and help educate our community.

Upon completion of the one million gallon per day facility, the Center will be used to showcase purification technology, while engaging the public and stakeholders in this process. It will include a visitor education area and serve as training facility for JEA staff and industry leaders. 

Through the H2.0® Purification Program, JEA continues its role as a leader in ensuring safe, reliable, locally controlled water supply that is essential for healthy environments, robust economies and a high quality of life. 

 

JEA's Rivertown Water Treatment Plant

The JEA Rivertown Water Treatment Plant is a new facility being built to serve the rapidly growing northern St. Johns County, which includes RiverTown, a new 4,170-acre master-planned community along the St. Johns River.

The new water treatment plant, which began construction in October 2021, will support future growth in St. Johns County, while providing improved water pressure and system reliability to all our customers in the area.

The first phase of the plant went online in April 2023 in order to meet the high water-demand of spring and summer. After a year-long delay due to contractor issues, construction resumed in March 2024 and is projected to be completed by December 2024. The first phase of the plant continues to produce and distribute potable water to JEA customers. 

 

Jacksonville’s Water Grid

JEA’s Major Grid provides water to most of Duval County and the northwest portion of St. Johns County. JEA also supplies water to Mayport, the Yulee and Wildlight areas of Nassau County, and from Ponte Vedra south to Vilano Beach along A1A. Additionally, along the Intracoastal Waterway in Palm Valley, one small area gets its water through an interconnection with the St. Johns County Utility Department. Our grid arrangements provide reliable water service backup as needed, particularly during emergencies or periods of routine plant maintenance shutdowns. For additional information, visit jea.com/drinkingwater.

 

Water Hardness Levels

Water is described as "hard" when it contains high levels of dissolved minerals - primarily calcium and magnesium. While these naturally occuring compounds an leave spots on dishes and windows (easily removed with white vinegar), they do not present a health risk. In fact, both calcium and magnesium are commonly taken as health supplements. 

The table indicating the total hardness found in all JEA-serviced zip codes can be found at jea.com/hardness. 

 

Accordion
Accordion Item
Closed Title:Major Grid
Open Text:

Radioactive Contaminants

Alpha emitters (pCi/L)

Likely Source: Erosion of natural deposits
Sample Date: 05/23 Level Detected: 1.39 Range of Results: ND - 1.39
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 15

Radium 226+228 or combined radium (pCi/L)

Likely Source: Erosion of natural deposits
Sample Date: 05/23 Level Detected: 2.41 Range of Results: ND - 2.41
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Inorganic Contaminants

Antimony (ppb)

Likely Source: Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 6 MCL or MRDL: 6

Arsenic (ppb)

Likely Source: Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes
Sample Date: 05/23 Level Detected: 0.9 Range of Results: ND - 0.9
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 10

Barium (ppm)

Likely Source: Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Sample Date: 05/23 Level Detected: 0.038 Range of Results: 0.015 - 0.038
Violation: No MCLG or MRDLG: 2 MCL or MRDL: 2

Chromium (ppb)

Likely Source: Discharge from steel and pulp mills; erosion of natural deposits
Sample Date: 05/23 Level Detected: 0.893 Range of Results: ND - 0.893
Violation: No MCLG or MRDLG: 100 MCL or MRDL: 100

Cyanide (ppb)

Likely Source: Discharge from from steel/metak factories; discharge from plastic and fertilizer factories
Sample Date: 05/23 Level Detected: 11 Range of Results: ND - 11
Violation: No MCLG or MRDLG: 200 MCL or MRDL: 200

Fluoride (ppm)

Likely Source: Erosion of natural deposits; discharge from fertilizer and aluminum factories. Water additive which promotes strong teeth when at the optimum level of 0.7 ppm
Sample Date: 05/23 Level Detected: 1.06 Range of Results: ND - 1.06
Violation: No MCLG or MRDLG: 4 MCL or MRDL: 4.0

Lead (point of entry) (ppb)

Likely Source: Residue from man-made pollution such as auto emissions and paint; lead pipe, casing, and solder
Sample Date: 05/23 Level Detected: 2.65 Range of Results: ND - 2.65
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 15

Mercury (Inorganic) (ppb)

Likely Source: Erosion of natural deposits; discharge from refineries and factories; runoff from landfills; runoff from cropland
Sample Date: 05/23 Level Detected: 0.046 Range of Results: ND - 0.46
Violation: No MCLG or MRDLG: 2 MCL or MRDL: 2

Nitrate (as Nitrogen) (ppm)

Likely Source: Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: 05/23 Level Detected: 0.13 Range of Results: ND - 0.13
Violation: No MCLG or MRDLG: 10 MCL or MRDL: 10

Nitrite (as Nitrogen) (ppm)

Likely Source: Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: 05/23 Level Detected: 0.09 Range of Results: ND - 0.9
Violation: No MCLG or MRDLG: 1 MCL or MRDL: 1

Selenium (ppb)

Likely Source: Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines
Sample Date: 05/23 Level Detected: 6.16 Range of Results: ND - 6.16
Violation: No MCLG or MRDLG: 50 MCL or MRDL: 50

Sodium (ppm)

Likely Source: Salt water intrusion, leaching from soil
Sample Date: 05/23 Level Detected: 126.43 Range of Results: 8.18 - 126.43
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 160

Sythentic Organic Contaminmants

Di(2-ethlhexyl) phthalate (ppb)

Likely Source: Discharge from pharmaceutical and chemical factories
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Volatile Organic Contaminmants

Dichloromethane (ppb)

Likely Source: Discharge from pharmaceutical and chemical factories
Sample Date: 05/23 - 11/23 Level Detected: 10.31 Range of Results: ND - 10.3
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Stage 1 Disinfectants and Disinfection Byproducts2

Chlorine (ppm)

Likely Source: Water additive used to control microbes
Sample Date: 01/23 - 12/23 Level Detected: 1.11 Range of Results: 0.20 - 1.99
Violation: No MCLG or MRDLG: 4 MCL or MRDL: 4.0

Stage 2 Disinfectants and Disinfection Byproducts2

Haloacetic Acids (five) (HAA5) (ppb)

Likely Source: By-product of drinking water disinfection
Sample Date: 01/23 - 12/23 Level Detected: 32.24 Range of Results: 9.9 - 39.15
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)

Likely Source: By-product of drinking water disinfection
Sample Date: 01/23 - 12/23 Level Detected: 70.49 Range of Results: 26.59 - 94.811
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 80

Lead and Copper (Tap Water)

Copper (ppm)

Likely Source: Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives
Sample Date: 07/23 90th Percentile: 0.08 # Exceeding AL: 0 of 86
Violation: No MCLG or MRDLG: 1.3 AL (Action Level): 1.3

Lead (ppb)

Likely Source: Corrosion of household plumbing systems; erosion of natural deposits
Sample Date: 07/23 90th Percentile: 1.50 # Exceeding AL: 0 of 86
Violation: No MCLG or MRDLG: 0 AL (Action Level): 15

Secondary Contaminants

Chloride (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: 05/23 Level Detected: 319 Range of Results: 9.85 - 319
Violation: Yes3 MCLG or MRDLG: N/A MCL or MRDL: 250

Odor (threshold odor number)

Likely Source: Naturally occurring organics
Sample Date: 05/23 - 07/23 Level Detected: 44.7 Range of Results: ND - 44.7
Violation: Yes3 MCLG or MRDLG: N/A MCL or MRDL: 3

Sulfate (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: NR Level Detected: NR Range of Results: NR
Violation: N MCLG or MRDLG: N/A MCL or MRDL: 250

Total Dissolved Solids (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: 05/23 Level Detected: 876 Range of Results: 153 - 876
Violation: Yes3 MCLG or MRDLG: N/A MCL or MRDL: 250
  1. Although the MCL value was exceeded, the annual average results were below the MCL.
  2. Level Detected for Disinfectants and Disinfection Byproducts is the highest locational running annual average of monthly/quarterly averages if sampled monthly/quarterly, or the highest result if sampled annually. 
  3. Florida Source water is naturally high in dissolved minerals and some Secondary Contaminants exceeded the MCL. The concentration found in our water only affects the aesthetic quality (look, smell, taste) and is not associated with any adverse health affects.  

Note: St. Johns Forest WTP (Major Grid) has a FDEP waiver for Sulfate levels not to exceed 500mg/l.

Accordion Item
Closed Title:Mayport
Open Text:

Radioactive Contaminants

Alpha emitters (pCi/L)

Likely Source: Erosion of natural deposits
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 15

Radium 226+228 or combined radium (pCi/L)

Likely Source: Erosion of natural deposits
Sample Date: 03/18 Level Detected: 0.9 Range of Results: N/A
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Inorganic Contaminants

Antimony (ppb)

Likely Source: Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 6 MCL or MRDL: 6

Arsenic (ppb)

Likely Source: Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 10

Barium (ppm)

Likely Source: Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Sample Date: 03/21 Level Detected: 0.027 Range of Results: N/A
Violation: No MCLG or MRDLG: 2 MCL or MRDL: 2

Chromium (ppb)

Likely Source: Discharge from steel and pulp mills; erosion of natural deposits
Sample Date: ND Level Detected: ND Range of Results: ND 
Violation: No MCLG or MRDLG: 100 MCL or MRDL: 100

Cyanide (ppb)

Likely Source: Discharge from from steel/metak factories; discharge from plastic and fertilizer factories
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 200 MCL or MRDL: 200

Fluoride (ppm)

Likely Source: Erosion of natural deposits; discharge from fertilizer and aluminum factories. Water additive which promotes strong teeth when at the optimum level of 0.7 ppm
Sample Date: 03/21 Level Detected: 0.68 Range of Results: N/A
Violation: No MCLG or MRDLG: 4 MCL or MRDL: 4.0

Lead (point of entry) (ppb)

Likely Source: Residue from man-made pollution such as auto emissions and paint; lead pipe, casing, and solder
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 15

Mercury (Inorganic) (ppb)

Likely Source: Erosion of natural deposits; discharge from refineries and factories; runoff from landfills; runoff from cropland.
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 2 MCL or MRDL: 2

Nitrate (as Nitrogen) (ppm)

Likely Source: Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: 03/23 Level Detected: 0.4 Range of Results: ND
Violation: No MCLG or MRDLG: 10 MCL or MRDL: 10

Nitrite (as Nitrogen) (ppm)

Likely Source: Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: 03/23 Level Detected: 0.4 Range of Results: N/A
Violation: No MCLG or MRDLG: 1 MCL or MRDL: 1

Selenium (ppb)

Likely Source: Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 50 MCL or MRDL: 50

Sodium (ppm)

Likely Source: Salt water intrusion, leaching from soil
Sample Date: 03/21 Level Detected: 13.678 Range of Results: N/A
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 160

Sythetic Organic Contaminmants

Di(2-ethylhexyl) phthalate (ppb)

Likely Source: Discharge from pharmaceutical and chemical factories
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Volatile Organic Contaminmants

Dichloromethane (ppb)

Likely Source: Discharge from pharmaceutical and chemical factories
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Stage 1 Disinfectants and Disinfection Byproducts2

Chlorine (ppm)

Likely Source: Water additive used to control microbes
Sample Date: 01/23 - 12/23 Level Detected: 0.95 Range of Results: 0.24 - 1.62
Violation: No MCLG or MRDLG: 4 MCL or MRDL: 4.0

Stage 2 Disinfectants and Disinfection Byproducts2

Haloacetic Acids (five) (HAA5) (ppb)

Likely Source: By-product of drinking water disinfection
Sample Date: 04/23 Level Detected: 22.63 Range of Results: N/A
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)

Likely Source: By-product of drinking water disinfection
Sample Date: 04/23  Level Detected: 73.48 Range of Results: N/A
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 80

Lead and Copper (Tap Water)

Copper (ppm)

Likely Source: Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives
Sample Date: 07/23 - 08/23  90th Percentile: 1.04 # Exceeding AL: 1 of 12
Violation: No MCLG or MRDLG: 1.3 AL (Action Level): 1.3

Lead (ppb)

Likely Source: Corrosion of household plumbing systems; erosion of natural deposits
Sample Date: 07/23 - 08/23 90th Percentile: 0.60 # Exceeding AL: 0 of 12
Violation: No MCLG or MRDLG: 0 AL (Action Level): 15

Secondary Contaminants

Chloride (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: NR Level Detected: NR Range of Results: NR
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 250

Odor (threshold odor number)

Likely Source: Naturally occurring organics
Sample Date: 03/21 Level Detected: 8 Range of Results: N/A
Violation: Yes3 MCLG or MRDLG: N/A MCL or MRDL: 3

Sulfate (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: NR Level Detected: NR Range of Results: NR
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 250

Total Dissolved Solids (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: NR Level Detected: NR Range of Results: NR
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 250
  1. Although the MCL value was exceeded, the annual average results were below the MCL.
  2. Level Detected for Disinfectants and Disinfection Byproducts is the highest locational running annual average of monthly/quaterly averages if sampled monthly/quarterly, or the highest result if sampled annually.  
  3. Florida Source water is naturally high in dissolved minerals and some Secondary Contaminants exceeded the MCL. The concentration found in our water only affects the aesthetic quality (look, smell, taste) and is not associated with any adverse health effects. Note: St. Johns Forest WTP (Major Grid) has a FDEP waiver for Sulfate levels not to exceed 500 mg/L. 
Accordion Item
Closed Title:Lofton Oaks Grid
Open Text:

Radioactive Contaminants

Alpha emitters (pCi/L)

Likely Source: Erosion of natural deposits
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 15

Radium 226+228 or combined radium (pCi/L)

Likely Source: Erosion of natural deposits
Sample Date: 05/23 Level Detected: 1.91 Range of Results: 0.21 - 1.91
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Inorganic Contaminants

Antimony (ppb)

Likely Source: Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 6 MCL or MRDL: 6

Arsenic (ppb)

Likely Source: Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 10

Barium (ppm)

Likely Source: Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Sample Date: 05/23 Level Detected: 0.033 Range of Results: 0.030 - 0.033
Violation: No MCLG or MRDLG: 2 MCL or MRDL: 2

Chromium (ppb)

Discharge from steel and pulp mills; erosion of natural deposits
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 100 MCL or MRDL: 100

Cyanide (ppb)

Discharge from steel/metal factories; discharge from plastic and fertilizer factories
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 200 MCL or MRDL: 200

Fluoride (ppm)

Likely Source: Erosion of natural deposits; discharge from fertilizer and aluminum factories. Water additive which promotes strong teeth when at the optimum level of 0.7 ppm
Sample Date: 05/23 Level Detected: 0.96 Range of Results: 0.81 - 0.96
Violation: No MCLG or MRDLG: 4 MCL or MRDL: 4.0

Lead (point of entry) (ppb)

Likely Source: Residue from man-made pollution such as auto emissions and paint; lead pipe, casing, and solder
Sample Date: ND Level Detected: ND Range of Results: ND 
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 15

Mercury (inorganic) (ppb)

Likely Source: Erosion of natural deposits; discharge from refineries and factories; runoff from landfills; runoff from cropland 
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 2 MCL or MRDL: 2

Nitrate (as Nitrogen) (ppm)

Likely Source: Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: 05/23 Level Detected: 0.02 Range of Results: ND - 0.02
Violation: No MCLG or MRDLG: 10 MCL or MRDL: 10

Nitrite (as Nitrogen) (ppm)

Likely Source: Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 1 MCL or MRDL: 1

Selenium (ppb)

Likely Source: Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 50 MCL or MRDL: 50

Sodium (ppm)

Likely Source: Salt water intrusion, leaching from soil
Sample Date: 05/23 Level Detected: 25.63 Range of Results: 21.12 - 25.63
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 160

Synthetic Organic Contaminmants

Di(2-ethylhexyl) phthalate (ppb)

Likely Source: Discharge from pharmaceutical and chemical factories 
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Volatile Organic Contaminmants

Dichloromethane (ppb)

Likely Source: Discharge from pharmaceutical and chemical factories 
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Stage 1 Disinfectants and Disinfection Byproducts2

Chlorine (ppm)

Likely Source: Water additive used to control microbes
Sample Date: 01/23 - 12/23 Level Detected: 0.92 Range of Results: 0.2 - 1.98
Violation: No MCLG or MRDLG: 4 MCL or MRDL: 4.0

Stage 2 Disinfectants and Disinfection Byproducts2

Haloacetic Acids (five) (HAA5) (ppb)

Likely Source: By-product of drinking water disinfection
Sample Date: 01/23 - 12/23 Level Detected: 24.31 Range of Results: 11.39 - 41.87
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)

Likely Source: By-product of drinking water disinfection
Sample Date: 01/23 - 12/23 Level Detected: 62.78 Range of Results: 33.44 - 68.88
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 80

Lead and Copper (Tap Water)

Copper (ppm)

Likely Source: Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives
Sample Date: 06/23 - 08/23  90th Percentile: 0.02 # Exceeding AL: 0 of 34
Violation: No MCLG or MRDLG: 1.3 AL (Action Level): 1.3

Lead (ppb)

Likely Source: Corrosion of household plumbing systems; erosion of natural deposits
Sample Date: 06/23 - 08/23 90th Percentile: 0.60 # Exceeding AL: 0 of 34
Violation: No MCLG or MRDLG: 0 AL(Action Level): 15

Secondary Contaminants

Chloride (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: NR Level Detected: NR Range of Results: NR
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 250

Odor (threshold odor number)

Likely Source: Naturally occurring organics
Sample Date: 05/23 Level Detected: 56.6 Range of Results: 2.83 - 56.6
Violation: Yes3 MCLG or MRDLG: N/A MCL or MRDL: 3

Sulfate (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: NR Level Detected: NR Range of Results: NR
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 250

Total Dissolved Solids (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: NR Level Detected: NR Range of Results: NR
Violation: No MCLG or MRDLG: N/A MCL or MRDL:250

 

  1. Although the MCL value was exceeded, the annual average results were below the MCL.
  2. Level Detected for Disinfectants and Disinfection Byproducts is the highest locational running annual average of monthly/quaterly averages if sampled monthly/quarterly, or the highest result if sampled annually.  
  3. Florida Source water is naturally high in dissolved minerals and some Secondary Contaminants exceeded the MCL. The concentration found in our water only affects the aesthetic quality (look, smell, taste) and is not associated with any adverse health effects. Note: St. Johns Forest WTP (Major Grid) has a FDEP waiver for Sulfate levels not to exceed 500 mg/L.
Accordion Item
Closed Title:Ponce de Leon Grid
Open Text:

Radioactive Contaminants

Alpha emitters (pCi/L)

Likely Source: Erosion of natural deposits
Sample Date: 11/19 - 08/20 Level Detected: 4.66 Range of Results: ND - 4.66
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 15

Radium 226+228 or combined radium (pCi/L)

Likely Source: Erosion of natural deposits
Sample Date: 11/19 - 8/20 Level Detected: 1.67 Range of Results: ND - 1.67
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Inorganic Contaminants

Antimony (ppb)

Likely Source: Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 6 MCL or MRDL: 6

Arsenic (ppb)

Likely Source: Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 10

Barium (ppm)

Likely Source: Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Sample Date: 03/21 Level Detected: 0.019 Range of Results: 0.016 - 0.019
Violation: No MCLG or MRDLG: 2 MCL or MRDL: 2

Chromium (ppb)

Likely Source: Discharge from steel and pulp mills; erosion of natural deposits
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 100 MCL or MRDL: 100

Cyanide (ppb)

Likely Source: Discharge from steel/metal factories; discharge from plastic and fertilizer factories
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 200 MCL or MRDL: 200

Fluoride (ppm)

Likely Source: Erosion of natural deposits; discharge from fertilizer and aluminum factories. Water additive which promotes strong teeth when at the optimum level of 0.7 ppm
Sample Date: 03/21 Level Detected: 1.07 Range of Results: 1.01 - 1.07
Violation: No MCLG or MRDLG: 4 MCL or MRDL: 4.0

Lead (point of entry) (ppb)

Likely Source: Residue from man-made pollution such as auto emissions and paint; lead pipe, casing, and solder
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 15

Mercury (inorganic) (ppb)

Likely Source: Erosion of natural deposits; discharge from refineries and factories; runoff from landfills; runoff from cropland
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 2 MCL or MRDL: 2

Nitrate (as Nitrogen) (ppm)

Likely Source: Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: 03/23 Level Detected: 0.05 Range of Results: ND - 0.05
Violation: No MCLG or MRDLG: 10 MCL or MRDL: 10

Nitrite (as Nitrogen) (ppm)

Likely Source: Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: 03/23 Level Detected: 0.05 Range of Results: ND - 0.05
Violation: No MCLG or MRDLG: 1 MCL or MRDL: 1

Selenium (ppb)

Likely Source: Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines
Sample Date: 03/21 Level Detected: 0.525 Range of Results: ND - 0.525
Violation: No MCLG or MRDLG: 50 MCL or MRDL: 50

Sodium (ppm)

Likely Source: Salt water intrusion, leaching from soil
Sample Date: 03/21 Level Detected: 62.82 Range of Results: 32.34 - 62.82
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 160

Synthetic Organic Contaminants

Di(2-ethylhexyl) phthalate (ppb)

Likely Source: Discharge from pharmaceutical and chemical factories
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Volatile Organic Contaminants

Dichloromethane (ppb)

Likely Source: Discharge from pharmaceutical and chemical factories
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Stage 1 Disinfectants and Disinfection Byproducts2

Chlorine (ppm)

Likely Source: Water additive used to control microbes
Sample Date: 01/23 - 12/23 Level Detected: 0.95 Range of Results: 0.2 - 1.86
Violation: No MCLG or MRDLG: 4 MCL or MRDL: 4.0

Stage 2 Disinfectants and Disinfection Byproducts2

Haloacetic Acids (five) (HAA5) (ppb)

Likely Source: By-product of drinking water disinfection
Sample Date: 01/23 - 12/23 Level Detected: 12.65 Range of Results: 2.26 - 24.02
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)

Likely Source: By-product of drinking water disinfection
Sample Date: 01/23 - 12/23 Level Detected: 64.47 Range of Results: 12.42 - 107.681
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 80

Lead and Copper (Tap Water)

Copper (ppm)

Likely Source: Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives
Sample Date: 07/23  90th Percentile: 0.12 # Exceeding AL: 0 of 11
Violation: No MCLG or MRDLG: 1.3 AL (Action Level): 1.3

Lead (ppb)

Likely Source: Corrosion of household plumbing systems; erosion of natural deposits
Sample Date: 07/23 90th Percentile: 3.19 # Exceeding AL: 0 of 11
Violation: No MCLG or MRDLG: 0 AL (Action Level): 15

Secondary Contaminants

Chloride (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: NR Level Detected: NR Range of Results: NR
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 250

Odor (threshold odor number)

Likely Source: Naturally occurring organics
Sample Date: 03/21 - 04/21 Level Detected: 16 Range of Results: 4 - 16
Violation: Yes3 MCLG or MRDLG: N/A MCL or MRDL: 3

Sulfate (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: 03/21 - 04/21 Level Detected: 269 Range of Results: 160 - 269
Violation: Yes3 MCLG or MRDLG: N/A MCL or MRDL: 250

Total Dissolved Solids (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: 03/21 - 04/21 Level Detected: 656 Range of Results: 474 - 656
Violation: Yes3 MCLG or MRDLG: N/A MCL or MRDL: 250
  1. Although the MCL value was exceeded, the annual average results were below the MCL.
  2. Level Detected for Disinfectants and Disinfection Byproducts is the highest locational running annual average of monthly/quaterly averages if sampled monthly/quarterly, or the highest result if sampled annually.
  3. Florida Source water is naturally high in dissolved minerals and some Secondary Contaminants exceeded the MCL. The concentration found in our water only affects the aesthetic quality (look, smell, taste) and is not associated with any adverse health effects. Note: St. Johns Forest WTP (Major Grid) has a FDEP waiver for Sulfate levels not to exceed 500 mg/L.
Accordion Item
Closed Title:Ponte Vedra Grid
Open Text:

Radioactive Contaminants

Alpha emitters (pCi/L)

Likely Source: Erosion of natural deposits
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 15

Radium 226+228 or combined radium (pCi/L)

Likely Source: Erosion of natural deposits
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Inorganic Contaminants

Antimony (ppb)

Likely Source: Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder
Sample Date: ND Level Detected: 0.53 Range of Results: ND - 0.53
Violation: No MCLG or MRDLG: 6 MCL or MRDL: 6

Arsenic (ppb)

Likely Source: Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 10

Barium (ppm)

Likely Source: Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Sample Date: 05/23 Level Detected: 0.037 Range of Results: 0.021 - 0.037
Violation: No MCLG or MRDLG: 2 MCL or MRDL: 2

Chromium (ppb)

Likely Source: Discharge from steel and pulp mills; erosion of natural deposits
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 100 MCL or MRDL: 100

Cyanide (ppb)

Likely Source: Discharge from steel/metal factories; discharge from plastic and fertilizer factories
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 200 MCL or MRDL: 200

Fluoride (ppm)

Likely Source: Erosion of natural deposits; discharge from fertilizer and aluminum factories. Water additive which promotes strong teeth when at the optimum level of 0.7 ppm
Sample Date: 05/23 Level Detected: 0.96 Range of Results: 0.95 - 0.96
Violation: No MCLG or MRDLG: 4 MCL or MRDL: 4.0

Lead (point of entry) (ppb)

Likely Source: Residue from man-made pollution such as auto emissions and paint; lead pipe, casing, and solder
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 15

Mercury (inorganic) (ppb)

Likely Source: Erosion of natural deposits; discharge from refineries and factories; runoff from landfills; runoff from cropland
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 2 MCL or MRDL: 2

Nitrate (as Nitrogen) (ppm)

Likely Source: Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: ND  Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 10 MCL or MRDL: 10

Nitrite (as Nitrogen) (ppm)

Likely Source: Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 1 MCL or MRDL: 1

Selenium (ppb)

Likely Source: Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines
Sample Date: 05/23 Level Detected: 3.61 Range of Results: ND - 3.61
Violation: No MCLG or MRDLG: 50 MCL or MRDL: 50

Sodium (ppm)

Likely Source: Salt water intrusion, leaching from soil
Sample Date: 05/23 Level Detected: 71.56 Range of Results: 21.89 - 71.56
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 160

Synthetic Organic Contaminants

Di(2-ethylhexyl) phthalate (ppb)

Likely Source: Discharge from pharmaceutical and chemical factories
Sample Date: 05/23 - 10/23 Level Detected: 0.72 Range of Results: ND - 0.72
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5
Volatile Organic Contaminants

Dichloromethane (ppb)

Likely Source: Discharge from pharmaceutical and chemical factories
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5
Stage 1 Disinfectants and Disinfection Byproducts2

Chlorine (ppm)

Likely Source: Water additive used to control microbes
Sample Date: 01/23 - 12/23 Level Detected: 0.85 Range of Results: 0.22 - 1.98
Violation: No MCLG or MRDLG: 4 MCL or MRDL: 4.0

Stage 2 Disinfectants and Disinfection Byproducts2

Haloacetic Acids (five) (HAA5) (ppb)

Likely Source: By-product of drinking water disinfection
Sample Date: 07/23 Level Detected: 17.00 Range of Results: 15.57 - 17.00
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)

Likely Source: By-product of drinking water disinfection
Sample Date: 07/23 Level Detected: 75.63 Range of Results: 42.87 - 75.63
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 80

Lead and Copper (Tap Water)

Copper (ppm)

Likely Source: Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives
Sample Date: 06/23  - 07/23 90th Percentile: 0.12 # Exceeding AL: 0 of 31
Violation: No MCLG or MRDLG: 1.3 AL (Action Level): 1.3

Lead (ppb)

Likely Source: Corrosion of household plumbing systems; erosion of natural deposits
Sample Date: 06/23 - 07/23 90th Percentile: 0.84 # Exceeding AL: 0 of 31
Violation: No MCLG or MRDLG: 0 AL (Action Level): 15

Secondary Contaminants

Chloride (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: NR Level Detected: NR Range of Results: NR
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 250

Odor (threshold odor number)

Likely Source: Naturally occurring organics
Sample Date: 05/23 - 06/23 Level Detected: 12.6 Range of Results: 2.83 - 12.6
Violation: Yes3 MCLG or MRDLG: N/A MCL or MRDL: 3

Sulfate (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: NR Level Detected: NR Range of Results: NR
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 250

Total Dissolved Solids (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: 05/23 Level Detected: 640 Range of Results: 401 - 640
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 250
  1. Although the MCL value was exceeded, the annual average results were below the MCL.
  2. Level Detected for Disinfectants and Disinfection Byproducts is the highest locational running annual average of monthly/quaterly averages if sampled monthly/quarterly, or the highest result if sampled annually. N/A indicates 4 quarters of samples have not yet been taken, so the Level Detected cannot be calculated. 
  3. Florida Source water is naturally high in dissolved minerals and some Secondary Contaminants exceeded the MCL. The concentration found in our water only affects the aesthetic quality (look, smell, taste) and is not associated with any adverse health effects. Note: St. Johns Forest WTP (Major Grid) has a FDEP waiver for Sulfate levels not to exceed 500 mg/L. 
Accordion Item
Closed Title:Palm Valley Grid
Open Text:

Radioactive Contaminants

Alpha emitters (pCi/L)

Likely Source: Erosion of natural deposits
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 15

Radium 226+228 or combined radium (pCi/L)

Likely Source: Erosion of natural deposits
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Inorganic Contaminants

Antimony (ppb)

Likely Source: Discharge from petroleum refineries; fire retardants; ceramics; electronics; solder
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 6 MCL or MRDL: 6

Arsenic (ppb)

Likely Source: Erosion of natural deposits; runoff from orchards; runoff from glass and electronics production wastes
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 10

Barium (ppm)

Likely Source: Discharge of drilling wastes; discharge from metal refineries; erosion of natural deposits
Sample Date: 05/23 Level Detected: 0.023 Range of Results: 0.021 - 0.023
Violation: No MCLG or MRDLG: 2 MCL or MRDL: 2

Chromium (ppb)

Likely Source: Discharge from steel and pulp mills; erosion of natural deposits
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 100 MCL or MRDL: 100

Cyanide (ppb)

Likely Source: Discharge from steel/metal factories; discharge from plastic and fertilizer factories
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 200 MCL or MRDL: 200

Fluoride (ppm)

Likely Source: Erosion of natural deposits; discharge from fertilizer and aluminum factories. Water additive which promotes strong teeth when at the optimum level of 0.7 ppm
Sample Date: 05/23 Level Detected: 0.84 Range of Results: 0.68 - 0.84
Violation: No MCLG or MRDLG: 4 MCL or MRDL: 4.0

Lead (point of entry) (ppb)

Likely Source: Residue from man-made pollution such as auto emissions and paint; lead pipe, casing, and solder
Sample Date: ND Level Detected: ND Range of Results: ND 
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 15

Mercury (inorganic) (ppb)

Likely Source: Erosion of natural deposits; discharge from refineries and factories; runoff from landfills; runoff from cropland
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 2 MCL or MRDL: 2

Nitrate (as Nitrogen) (ppm)

Likely Source: Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 10 MCL or MRDL: 10

Nitrite (as Nitrogen) (ppm)

Likely Source: Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 1 MCL or MRDL: 1

Selenium (ppb)

Likely Source: Discharge from petroleum and metal refineries; erosion of natural deposits; discharge from mines
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 50 MCL or MRDL: 50

Sodium (ppm)

Likely Source: Salt water intrusion, leaching from soil
Sample Date: 05/23 Level Detected: 25.0 Range of Results: 21.0 - 25.0
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 160

Synthetic Organic Contaminmants

Di(2-ethylhexyl) phthalate (ppb)

Likely Source: Discharge from pharmaceutical and chemical factories
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Volatile Organic Contaminmants

Dichloromethane (ppb)

Likely Source: Discharge from pharmaceutical and chemical factories
Sample Date: ND Level Detected: ND Range of Results: ND
Violation: No MCLG or MRDLG: 0 MCL or MRDL: 5

Stage 1 Disinfectants and Disinfection Byproducts2

Chlorine (ppm)

Likely Source: Water additive used to control microbes
Sample Date: 01/23 - 12/23 Level Detected: 1.3 Range of Results: 0.26 - 1.97
Violation: No MCLG or MRDLG: 4 MCL or MRDL: 4.0

Stage 2 Disinfectants and Disinfection Byproducts2

Haloacetic Acids (five) (HAA5) (ppb)

Likely Source: By-product of drinking water disinfection
Sample Date: 10/23 Level Detected: 26.09 Range of Results: 19.69 - 26.09
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 60

TTHM [Total Trihalomethanes] (ppb)

Likely Source: By-product of drinking water disinfection
Sample Date: 10/23 Level Detected: 61.81 Range of Results: 50.60 - 61.18
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 80

Lead and Copper (Tap Water)

Copper (ppm)

Likely Source: Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives
Sample Date: 06/23 - 07/23 90th Percentile: 0.11 # Exceeding AL: 0 of 14
Violation: No MCLG or MRDLG: 1.3 AL (Action Level): 1.3

Lead (ppb)

Likely Source: Corrosion of household plumbing systems; erosion of natural deposits
Sample Date: 06/23 - 07/23 90th Percentile: ND # Exceeding AL: 0 of 14
Violation: No MCLG or MRDLG: 0 AL (Action Level): 15

Secondary Contaminants

Chloride (ppm)

 
Likely Source: Natural occurrence from soil leaching
Sample Date: NR Level Detected: NR Range of Results: NR
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 250

Odor (threshold odor number)

Likely Source: Naturally occurring organics
Sample Date: NR Level Detected: NR Range of Results: NR
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 3

Sulfate (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: NR Level Detected: NR Range of Results: NR
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 250

Total Dissolved Solids (ppm)

Likely Source: Natural occurrence from soil leaching
Sample Date: NR Level Detected: NR Range of Results: NR
Violation: No MCLG or MRDLG: N/A MCL or MRDL: 250
  1. Although the MCL value was exceeded, the annual average results were below the MCL.
  2. Level Detected for Disinfectants and Disinfection Byproducts is the highest locational running annual average of monthly/quarterly averages if sampled monthly/quarterly, or the highest result if sampled annually. N/A indicates 4 quarters of samples have not yet been taken, so the Level Detected cannot be calculated. 
  3. Florida Source water is naturally high in dissolved minerals and some Secondary Contaminants exceeded the MCL. The concentration found in our water only affects the aesthetic quality (look, smell, taste) and is not associated with any adverse health effects. Note: St. Johns Forest WTP (Major Grid) has a FDEP waiver for Sulfate levels not to exceed 500 mg/L. 
Item

Important Information

The Water Quality Report is provided to all customers of community water systems on an annual basis as required by the Environmental Protection Agency (EPA) under the 1996 Safe Drinking Water Act Amendments.

JEA routinely monitors for contaminants in your drinking water according to federal and state laws, rules, and regulations. Except where indicated otherwise, this report is based on the results of our monitoring for the period of January 1 to December 31, 2023. Data obtained before January 1, 2023, and presented in this report are from the most recent testing done in accordance with the laws, rules, and regulations. Out of more than 100 contaminants for which JEA routinely tests, only those that have been detected appear in the tables.

The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and wells. As water travels over the surface of the land or through the ground, it dissolves naturally occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity.

Contaminants that may be present in source water include:

  • (A) Microbial contaminants, such as viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations, and wildlife.
  • (B) Inorganic contaminants, such as salts and metals, which can be naturally-occurring or result from urban stormwater runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming.
  • (C) Pesticides and herbicides, which may come from a variety of sources such as agriculture, urban stormwater runoff, and residential uses.
  • (D) Organic chemical contaminants, including synthetic and volatile organic chemicals, which are by-products of industrial processes and petroleum production, and can also come from gas stations, urban stormwater runoff, and septic systems.
  • (E) Radioactive contaminants, which can be naturally occurring or be the result of oil and gas production and mining activities.

To ensure that tap water is safe to drink, the EPA prescribes regulations, which limit the amount of certain contaminants in water provided by public water systems. The Food and Drug Administration (FDA) regulations establish limits for contaminants in bottled water, which must provide the same protection for public health.

Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants does not necessarily indicate that the water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the Environmental Protection Agency’s Safe Drinking Water Hotline at (800) 426-4791.


Terms and Abbreviations

In the table above, you may find unfamiliar terms and abbreviations. To help you better understand these terms we’ve provided the following definitions:

  • Action Level (AL): The concentration of a contaminant which, if exceeded, triggers treatment or other requirements that a water system must follow.
  • Maximum Contaminant Level (MCL): The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
  • Maximum Contaminant Level Goal (MCLG): The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety.
  • Maximum Residual Disinfectant Level (MRDL): The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
  • Maximum Residual Disinfectant Level Goal (MRDLG): The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.
  • Non-Detect (ND): means not detected and indicates that the substance was not found by laboratory analysis.
  • Not Required (NR): Secondary contaminants with sample results below the MCL are not required to be reported.
  • Parts per billion (ppb) or Micrograms per liter (μg/l): One part by weight of analyte to 1 billion parts by weight of the water sample.
  • Parts per million (ppm) or Milligrams per liter (mg/l): One part by weight of analyte to 1 million parts by weight of the water sample.
  • Picocurie per liter (pCi/L): Measure of the radioactivity in water.
  • Variances and Exemptions: State or EPA permission not to meet an MCL under certain conditions.

Note: MCLs are set at stringent levels. To understand the possible health effects described for many regulated constituents, a person would have to drink two liters of water every day at the MCL for a lifetime to have a one-in-a-million chance of having the described effect.

Unregulated Contaminant Monitoring

JEA has been monitoring for Unregulated Contaminants (UC) as part of a study to help the U.S. Environmental Protection Agency (EPA) determine the occurrence in drinking water of UC and whether or not these contaminants need to be regulated. At present, no health standards (for example, maximum contaminant levels) have been established for UC. However, we are required to publish the analytical results of our UC monitoring in our annual water quality report, which are shown above. Only contaminants that were detected are reported. If you would like more information on the EPA’s Unregulated Contaminants Monitoring Rule (UCMR), please visit epa.gov/dwucmr or call the Safe Drinking Water Hotline at (800) 426-4791.

UCMR Results - Ponte Vedra Grid

Lithium (ppb)

Likely Source: Naturally occuring when groundwater interacts with saline water
Sample Date: 06/23 Average: 4.71 Range of Results: ND - 9.42

Additional Information

Lead: If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. JEA is responsible for providing high quality drinking water, but cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to have your water tested. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at epa.gov/safewater/lead.

TTHM [Total Trihalomethanes]: The following samples during 2023 exceeded the TTHM MCL of 80 ppb. However, the system did not incur an MCL violation because all annual average results at all sites were below the MCL. Some people who drink water containing trihalomethanes in excess of the MCL over many years may experience problems with their liver, kidneys, or central nervous system, and may have an increased risk of getting cancer.

Major Grid:

  • 6506 Greenfern Lane: 94.81 ppb (Oct)

Ponce de Leon Grid:

  • 2371 S. Ponte Vedra Blvd.: 82.46 & 82.63 ppb (Jan), 81.81 ppb (Apr), 86.91 ppb (Jul), 107.68 ppb (Oct)
  • 125 Tides Edge Place: 80.62 (Oct)

Immune-compromised Persons

Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants can be particularly at risk from infections. These people should seek advice from their health care providers about drinking water. EPA/CDC guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbiological contaminants are available from the Safe Drinking Water Hotline 800-426-4791.

Printed Versions of the Report

 For more information on JEA's water quality tests or to request a report, please contact us. 

Phone: (904) 665-6000 
Email: waterquality@jea.com
Online: jea.com/WQR2023 
By mail: JEA Water Quality
1002 N. Main St. 
Jacksonville, FL 32206
In person: Printed copies are available at JEA's Downtown Customer Service Center and at every branch of the Jacksonville's Public Library. JEA's board meetings are held 8 times per year at JEA's downtown offices, located at 225 N. Pearl Street, Jacksonville, FL. The schedule is available here. The public is invited to attend. 

 

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