What was found in Rochester'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 |
|---|---|---|---|
| Copper | 328.4 µg/L 25% of the EPA limit 1300 µg/L Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2019 | 1/1 | SYR4 |
| TTHM | 81.4 µg/L 102% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 64.59 µg/L 108% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2019 | 1/1 | SYR4 |
| Chloroform | 58.7 µg/L No EPA limit set Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 39.01 µg/L No EPA limit set Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 26.55 µg/L No EPA limit set Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 25.135 µg/L No EPA limit set Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 16.98 µg/L No EPA limit set Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2019 | 1/1 | SYR4 |
| Lead | 7.2535 µg/L 48% of the EPA limit 15 µg/L Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 3.1805 µg/L No EPA limit set Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2019 | 1/1 | SYR4 |
| Bromoform | 3.0105 µg/L No EPA limit set Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 1.68 µg/L No EPA limit set Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.266 µg/L No EPA limit set Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2019 | 1/1 | SYR4 |
| PFBS | 0.0269 µg/L No EPA limit set Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2023 | 1/1 | UCMR-5 |
| Pfba | 0.0054 µg/L No EPA limit set Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2023 | 1/1 | UCMR-5 |
| Pfhxa | 0.0049 µg/L No EPA limit set Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2023 | 1/1 | UCMR-5 |
| Pfpea | 0.0042 µg/L No EPA limit set Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2023 | 1/1 | UCMR-5 |
| Lead | 0.0014 mg/L 9% of the EPA limit 0.0150 mg/L Main supplier: NEW SEWICKLEY TWP MUNI AUTH · 4,276 people · 2025 | 1/1 | LCR |
Water suppliers serving Rochester
| Supplier | Population served |
|---|---|
| NEW SEWICKLEY TWP MUNI AUTH | 4,276 |
Frequently asked questions about Rochester tap water
Is Rochester tap water safe to drink?
EPA testing detected 18 contaminants in the water serving Rochester. 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 Rochester?
1 public water supplier report drinking-water monitoring for Rochester, Pennsylvania to the EPA. Each is listed above with its population served.
What contaminants are in Rochester's water?
The contaminants EPA monitoring detected in Rochester include Copper, TTHM, Total Haloacetic Acids (HAA5), Chloroform, 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.