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Tap water quality report

Warrenton, NC

EPA monitoring detected 14 contaminants across the 2 water suppliers serving Warrenton. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
15,480
people served
14
contaminants found
North Carolina rankings Lead in North Carolina PFAS in North Carolina

What was found in Warrenton's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Copper
632.85 µg/L 49%
of the EPA limit 1300 µg/L
Main supplier: WARREN COUNTY WATER SYSTEM · 13,230 people · 2019
Highest in the city: 890.2 µg/L — WARRENTON, TOWN OF · 2,250 people · 2017
2/2 SYR4
TTHM
105 µg/L 131%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: WARREN COUNTY WATER SYSTEM · 13,230 people · 2019
2/2 SYR4
Chloroform
73.1 µg/L
No EPA limit set
Main supplier: WARREN COUNTY WATER SYSTEM · 13,230 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
54.5 µg/L 91%
of the EPA limit 60 µg/L
Main supplier: WARREN COUNTY WATER SYSTEM · 13,230 people · 2019
2/2 SYR4
Trichloroacetic Acid
35 µg/L
No EPA limit set
Main supplier: WARREN COUNTY WATER SYSTEM · 13,230 people · 2019
2/2 SYR4
Lead
33.915 µg/L 226%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: WARREN COUNTY WATER SYSTEM · 13,230 people · 2019
2/2 SYR4
Bromodichloromethane
24.95 µg/L
No EPA limit set
Main supplier: WARREN COUNTY WATER SYSTEM · 13,230 people · 2019
Highest in the city: 25 µg/L — WARRENTON, TOWN OF · 2,250 people · 2019
2/2 SYR4
Dichloroacetic Acid
24 µg/L
No EPA limit set
Main supplier: WARREN COUNTY WATER SYSTEM · 13,230 people · 2019
2/2 SYR4
Monobromoacetic Acid
19.2 µg/L
No EPA limit set
Main supplier: WARREN COUNTY WATER SYSTEM · 13,230 people · 2019
Highest in the city: 21.3 µg/L — WARRENTON, TOWN OF · 2,250 people · 2019
2/2 SYR4
Dibromochloromethane
9.6 µg/L
No EPA limit set
Main supplier: WARREN COUNTY WATER SYSTEM · 13,230 people · 2019
2/2 SYR4
Monochloroacetic Acid
9.4 µg/L
No EPA limit set
Main supplier: WARREN COUNTY WATER SYSTEM · 13,230 people · 2019
2/2 SYR4
Dibromoacetic Acid
3.75 µg/L
No EPA limit set
Main supplier: WARREN COUNTY WATER SYSTEM · 13,230 people · 2019
2/2 SYR4
PFOS
0.0055 µg/L
No EPA limit set
Main supplier: WARREN COUNTY WATER SYSTEM · 13,230 people · 2025
1/2 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: WARREN COUNTY WATER SYSTEM · 13,230 people · 2025
2/2 LCR
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 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Warrenton

SupplierPopulation served
WARREN COUNTY WATER SYSTEM 13,230
WARRENTON, TOWN OF 2,250

Frequently asked questions about Warrenton tap water

Is Warrenton tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Warrenton. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Warrenton?

2 public water suppliers report drinking-water monitoring for Warrenton, North Carolina to the EPA. Each is listed above with its population served.

What contaminants are in Warrenton's water?

The contaminants EPA monitoring detected in Warrenton include Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5), Trichloroacetic Acid. The full list, with the level at the main supplier and the data source, is in the table above.

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.