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.
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Resolved | 2025-10-14 |
| TT | Health-based | Resolved | 2025-10-14 |
| TT | Health-based | Resolved | 2025-10-14 |
| MCL | Health-based | Resolved | 2010-04-01 → 2010-06-30 |
| MCL | Health-based | Resolved | 2010-04-01 → 2010-06-30 |
| MCL | Health-based | Resolved | 2010-04-01 → 2010-06-30 |
| MCL | Health-based | Resolved | 2010-04-01 → 2010-06-30 |
| MCL | Health-based | Resolved | 2010-01-01 → 2010-03-31 |
| MCL | Health-based | Resolved | 2010-01-01 → 2010-03-31 |
| MCL | Health-based | Resolved | 2010-01-01 → 2010-03-31 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 694.05 µg/L 53% of the EPA limit 1300 µg/L
worst single sample: 825 µg/L | 60/60 | SYR4 | 2013–2019 |
| TTHM | 65.66 µg/L 82% of the EPA limit 80 µg/L
worst single sample: 76.8 µg/L | 53/53 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 38.24 µg/L 64% of the EPA limit 60 µg/L
worst single sample: 41 µg/L | 53/54 | SYR4 | 2012–2019 |
| Dibromochloromethane | 14.6 µg/L No EPA limit set
worst single sample: 7600 µg/L | 52/52 | SYR4 | 2012–2019 |
| Bromodichloromethane | 23.2 µg/L No EPA limit set
worst single sample: 30.9 µg/L | 51/51 | SYR4 | 2012–2019 |
| Chloroform | 35.25 µg/L No EPA limit set
worst single sample: 47 µg/L | 51/51 | SYR4 | 2012–2019 |
| Bromoform | 660 µg/L No EPA limit set
worst single sample: 780 µg/L | 21/53 | SYR4 | 2012–2019 |
| Lead | 4.7 µg/L 31% of the EPA limit 15 µg/L
worst single sample: 6 µg/L | 14/60 | SYR4 | 2013–2019 |
| Lead | 0.0037 mg/L 25% of the EPA limit 0.0150 mg/L | 12/12 | LCR | 2025 |
| Dibromoacetic Acid | 1450 µg/L No EPA limit set
worst single sample: 1500 µg/L | 6/6 | SYR4 | 2018–2019 |
| Monochloroacetic Acid | 1300 µg/L No EPA limit set | 6/6 | SYR4 | 2018–2019 |
| Dichloroacetic Acid | 15.68 µg/L No EPA limit set
worst single sample: 16.1 µg/L | 4/4 | SYR4 | 2018–2019 |
| Trichloroacetic Acid | 11.85 µg/L No EPA limit set
worst single sample: 12 µg/L | 4/4 | SYR4 | 2018–2019 |
| Monobromoacetic Acid | 1.198 µg/L No EPA limit set
worst single sample: 1.2 µg/L | 3/6 | SYR4 | 2018–2019 |
26 contaminants tested, none detected
Utility contact
Frequently asked questions about North Sewickley Mun Water Auth
Is North Sewickley Mun Water Auth tap water safe to drink?
EPA monitoring detected 18 contaminants in North Sewickley Mun Water Auth'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 North Sewickley Mun Water Auth's water?
EPA monitoring detected Copper, TTHM, Total Haloacetic Acids (HAA5), Dibromochloromethane, Bromodichloromethane, and others. The full list with the level and data source for each is above.
How many people does North Sewickley Mun Water Auth serve?
North Sewickley Mun Water Auth reports serving 4,578 people in Pennsylvania, per its EPA record.
Has North Sewickley Mun Water Auth had any water quality violations?
The EPA has 136 violations on file for North Sewickley Mun Water Auth, of which 27 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.