Tap WaterIndex

Tap water quality report

Warren County

EPA monitoring tested this supplier for 83 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

83
contaminants tested
17
detected
81,975
people served
0
health-based violations
Water source
Ground water
Ownership
Local government
Counties served
Warren

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

0
health-based violations
153
violations on file
1
still open
ViolationTypeStatusPeriod
Other Monitoring Resolved 2024-09-05
Other Monitoring Resolved 2024-09-05
Other Monitoring Resolved 2022-08-17
Other Monitoring Resolved 2022-08-17
Other Monitoring Unaddressed 2018-11-09
MR Monitoring Resolved 2013-10-01 → 2013-12-31
MR Monitoring Resolved 2013-10-01 → 2013-12-31
MR Monitoring Resolved 2013-10-01 → 2013-12-31
MR Monitoring Resolved 2013-10-01 → 2013-12-31
MR Monitoring Resolved 1997-01-01 → 1997-03-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
808 µg/L 62%
of the EPA limit 1300 µg/L
 122/130 SYR4 2013–2019
Bromodichloromethane
11.56 µg/L
No EPA limit set
 72/72 SYR4 2012–2019
Chloroform
20.47 µg/L
No EPA limit set
 72/72 SYR4 2012–2019
Dibromochloromethane
10.98 µg/L
No EPA limit set
 72/72 SYR4 2012–2019
Bromoform
4.08 µg/L
No EPA limit set
 71/72 SYR4 2012–2019
Dibromoacetic Acid
4 µg/L
No EPA limit set
 70/71 SYR4 2012–2019
TTHM
40.19 µg/L 50%
of the EPA limit 80 µg/L
 70/70 SYR4 2012–2019
Lead
17.6 µg/L 117%
of the EPA limit, in the worst sample — 15 µg/L
 67/130 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
15.65 µg/L 26%
of the EPA limit 60 µg/L
 55/71 SYR4 2012–2019
Dichloroacetic Acid
7.51 µg/L
No EPA limit set
 52/71 SYR4 2012–2019
Lead
0.0013 mg/L 8.7%
of the EPA limit 0.0150 mg/L
 30/30 LCR 2026
Trichloroacetic Acid
6.235 µg/L
No EPA limit set
 22/71 SYR4 2012–2019
Nitrate
912 µg/L 9.1%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Nitrate-Nitrite
912 µg/L 9.1%
of the EPA limit 10000 µg/L
 4/4 SYR4 2012–2017
Barium
98.1 µg/L 4.9%
of the EPA limit 2000 µg/L
 3/3 SYR4 2013–2019
Fluoride
1100 µg/L 28%
of the EPA limit 4000 µg/L
 3/3 SYR4 2013–2019
Monobromoacetic Acid
2.4 µg/L
No EPA limit set
 1/71 SYR4 2012–2019
66 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBenzeneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneEthylbenzeneHfpo-DaLassoMercuryMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Frequently asked questions about Warren County

Is Warren County tap water safe to drink?

EPA monitoring detected 17 contaminants in Warren County's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Warren County's water?

EPA monitoring detected Copper, Bromodichloromethane, Chloroform, Dibromochloromethane, Bromoform, and others. The full list with the level and data source for each is above.

How many people does Warren County serve?

Warren County reports serving 81,975 people, per its EPA record.

Has Warren County had any water quality violations?

The EPA has 153 violations on file for Warren County, of which 0 are health-based (a contaminant limit or required treatment was breached) and 1 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.