What was found in Petersburg'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.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 768 µg/L 19% of the EPA limit 4000 µg/L Highest in the city: PETERSBURG TOWN OF · 2,841 people · 2019 | 1/4 | SYR4 |
| Nitrate | 270 µg/L 2.7% of the EPA limit 10000 µg/L Highest in the city: PETERSBURG TOWN OF · 2,841 people · 2019 | 1/4 | SYR4 |
| Nitrite | 110 µg/L 11% of the EPA limit 1000 µg/L Highest in the city: PETERSBURG TOWN OF · 2,841 people · 2019 | 1/4 | SYR4 |
| Copper | 108.05 µg/L 8.3% of the EPA limit 1300 µg/L Main supplier: GRANT CO PSD-NORTHFORK-MAYSVILLE · 4,559 people · 2019 | 4/4 | SYR4 |
| Barium | 75.73 µg/L 3.8% of the EPA limit 2000 µg/L Highest in the city: PETERSBURG TOWN OF · 2,841 people · 2019 | 1/4 | SYR4 |
| TTHM | 40.58 µg/L 51% of the EPA limit 80 µg/L Main supplier: GRANT CO PSD-NORTHFORK-MAYSVILLE · 4,559 people · 2019
Highest in the city: 56.385 µg/L — PETERSBURG TOWN OF · 2,841 people · 2019 | 4/4 | SYR4 |
| Chloroform | 33.44 µg/L No EPA limit set Main supplier: GRANT CO PSD-NORTHFORK-MAYSVILLE · 4,559 people · 2019
Highest in the city: 51.22 µg/L — PETERSBURG TOWN OF · 2,841 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 35.82 µg/L 60% of the EPA limit 60 µg/L Main supplier: GRANT CO PSD-NORTHFORK-MAYSVILLE · 4,559 people · 2019
Highest in the city: 45.455 µg/L — PETERSBURG TOWN OF · 2,841 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 15.92 µg/L No EPA limit set Main supplier: GRANT CO PSD-NORTHFORK-MAYSVILLE · 4,559 people · 2019
Highest in the city: 31.55 µg/L — PETERSBURG TOWN OF · 2,841 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 17.34 µg/L No EPA limit set Main supplier: GRANT CO PSD-NORTHFORK-MAYSVILLE · 4,559 people · 2019
Highest in the city: 18.52 µg/L — GRANT COUNTY PSD WELTON ORCHARD · 229 people · 2019 | 4/4 | SYR4 |
| Monobromoacetic Acid | 3.4185 µg/L No EPA limit set Main supplier: GRANT CO PSD-NORTHFORK-MAYSVILLE · 4,559 people · 2019
Highest in the city: 9.462 µg/L — PETERSBURG TOWN OF · 2,841 people · 2019 | 3/4 | SYR4 |
| Bromodichloromethane | 6.168 µg/L No EPA limit set Main supplier: GRANT CO PSD-NORTHFORK-MAYSVILLE · 4,559 people · 2019
Highest in the city: 8.7345 µg/L — PETERSBURG TOWN OF · 2,841 people · 2019 | 4/4 | SYR4 |
| Dibromoacetic Acid | 0.5200 µg/L No EPA limit set Main supplier: GRANT CO PSD-NORTHFORK-MAYSVILLE · 4,559 people · 2019
Highest in the city: 5.4595 µg/L — PETERSBURG TOWN OF · 2,841 people · 2019 | 2/4 | SYR4 |
| Monochloroacetic Acid | 3.159 µg/L No EPA limit set Main supplier: GRANT CO PSD-NORTHFORK-MAYSVILLE · 4,559 people · 2019
Highest in the city: 5.0025 µg/L — GRANT CO PSD-US 220 S · 1,865 people · 2019 | 4/4 | SYR4 |
| Lead | 4.76 µg/L 32% of the EPA limit 15 µg/L Main supplier: GRANT CO PSD-NORTHFORK-MAYSVILLE · 4,559 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 1.474 µg/L No EPA limit set Main supplier: GRANT CO PSD-NORTHFORK-MAYSVILLE · 4,559 people · 2019
Highest in the city: 1.7235 µg/L — PETERSBURG TOWN OF · 2,841 people · 2019 | 4/4 | SYR4 |
| Arsenic | 1.58 µg/L 16% of the EPA limit 10 µg/L Highest in the city: PETERSBURG TOWN OF · 2,841 people · 2019 | 1/4 | SYR4 |
| Gross Alpha, Excl. Radon And U | 0.7390 pCi/L 4.9% of the EPA limit 15 pCi/L Highest in the city: PETERSBURG TOWN OF · 2,841 people · 2019 | 1/4 | SYR4 |
| Bromoform | 0.5700 µg/L No EPA limit set Highest in the city: PETERSBURG TOWN OF · 2,841 people · 2019 | 1/4 | SYR4 |
| Lead | 0.0018 mg/L 12% of the EPA limit 0.0150 mg/L Main supplier: GRANT CO PSD-NORTHFORK-MAYSVILLE · 4,559 people · 2025
Highest in the city: 0.0069 mg/L — GRANT COUNTY PSD WELTON ORCHARD · 229 people · 2025 | 4/4 | 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 Petersburg
| Supplier | Population served |
|---|---|
| GRANT CO PSD-NORTHFORK-MAYSVILLE | 4,559 |
| PETERSBURG TOWN OF | 2,841 |
| GRANT CO PSD-US 220 S | 1,865 |
| GRANT COUNTY PSD WELTON ORCHARD | 229 |
Frequently asked questions about Petersburg tap water
Is Petersburg tap water safe to drink?
EPA testing detected 20 contaminants in the water serving Petersburg. 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 Petersburg?
4 public water suppliers report drinking-water monitoring for Petersburg, West Virginia to the EPA. Each is listed above with its population served.
What contaminants are in Petersburg's water?
The contaminants EPA monitoring detected in Petersburg include Fluoride, Nitrate, Nitrite, Copper, Barium. 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.