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Tap water quality report

St. Clairsville, OH

EPA monitoring detected 21 contaminants across the 1 water supplier serving St. Clairsville. 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.

1
water supplier
5,097
people served
21
contaminants found
Ohio rankings Lead in Ohio PFAS in Ohio

What was found in St. Clairsville'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
Fluoride
1066.5 µg/L 27%
of the EPA limit 4000 µg/L
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
Nitrate-Nitrite
991 µg/L 9.9%
of the EPA limit 10000 µg/L
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2018
1/1 SYR4
Nitrate
970 µg/L 9.7%
of the EPA limit 10000 µg/L
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
Copper
527.85 µg/L 41%
of the EPA limit 1300 µg/L
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2018
1/1 SYR4
TTHM
98.305 µg/L 123%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
Chloroform
72 µg/L
No EPA limit set
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
63.635 µg/L 106%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
Barium
60.42 µg/L 3%
of the EPA limit 2000 µg/L
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
Trichloroacetic Acid
35.465 µg/L
No EPA limit set
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
Dichloroacetic Acid
30.51 µg/L
No EPA limit set
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
Bromodichloromethane
21.725 µg/L
No EPA limit set
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
Lead
18.64 µg/L 124%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2018
1/1 SYR4
Monobromoacetic Acid
9.563 µg/L
No EPA limit set
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
Dibromochloromethane
6.461 µg/L
No EPA limit set
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
Dibromoacetic Acid
3.81 µg/L
No EPA limit set
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
Bromoform
3.805 µg/L
No EPA limit set
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
Monochloroacetic Acid
2.865 µg/L
No EPA limit set
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
Chromium
2.5 µg/L 2.5%
of the EPA limit 100 µg/L
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
Selenium
1.1 µg/L 2.2%
of the EPA limit 50 µg/L
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2019
1/1 SYR4
PFOA
0.0064 µg/L
No EPA limit set
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2024
1/1 UCMR-5
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: ST. CLAIRSVILLE, CITY OF PWS · 5,097 people · 2026
1/1 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 St. Clairsville

SupplierPopulation served
ST. CLAIRSVILLE, CITY OF PWS 5,097

Frequently asked questions about St. Clairsville tap water

Is St. Clairsville tap water safe to drink?

EPA testing detected 21 contaminants in the water serving St. Clairsville. 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 St. Clairsville?

1 public water supplier report drinking-water monitoring for St. Clairsville, Ohio to the EPA. Each is listed above with its population served.

What contaminants are in St. Clairsville's water?

The contaminants EPA monitoring detected in St. Clairsville include Fluoride, Nitrate-Nitrite, Nitrate, Copper, TTHM. 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.