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 |
|---|---|---|---|
| MCL | Health-based | Resolved | 2007-08-01 → 2007-08-31 |
| MCL | Health-based | Resolved | 2007-08-01 → 2007-08-31 |
| MR | Monitoring | Resolved | 2023-10-01 → 2023-12-31 |
| MR | Monitoring | Resolved | 2023-10-01 → 2023-12-31 |
| MR | Monitoring | Resolved | 2023-10-01 → 2023-12-31 |
| MR | Monitoring | Resolved | 2023-10-01 → 2023-12-31 |
| MR | Monitoring | Resolved | 2023-10-01 → 2023-12-31 |
| MR | Monitoring | Resolved | 2023-10-01 → 2023-12-31 |
| MR | Monitoring | Resolved | 2023-10-01 → 2023-12-31 |
| MR | Monitoring | Resolved | 2023-10-01 → 2023-12-31 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| TTHM | 81.985 µg/L 102% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 102.3 µg/L | 162/162 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 62.8 µg/L 105% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 77.7 µg/L | 156/156 | SYR4 | 2012–2019 |
| Chloroform | 46.13 µg/L No EPA limit set
worst single sample: 65.9 µg/L | 102/102 | SYR4 | 2017–2019 |
| Copper | 270 µg/L 21% of the EPA limit 1300 µg/L
worst single sample: 390 µg/L | 76/98 | SYR4 | 2013–2019 |
| Bromodichloromethane | 15.14 µg/L No EPA limit set
worst single sample: 22.6 µg/L | 53/53 | SYR4 | 2017–2019 |
| Dibromochloromethane | 5.5 µg/L No EPA limit set
worst single sample: 15.7 µg/L | 53/53 | SYR4 | 2017–2019 |
| Nitrate | 4800 µg/L 48% of the EPA limit 10000 µg/L
worst single sample: 4900 µg/L | 52/52 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 27.74 µg/L No EPA limit set
worst single sample: 37.5 µg/L | 48/48 | SYR4 | 2017–2019 |
| Trichloroacetic Acid | 23.04 µg/L No EPA limit set
worst single sample: 37.5 µg/L | 47/48 | SYR4 | 2017–2019 |
| Dibromoacetic Acid | 2.55 µg/L No EPA limit set
worst single sample: 3.3 µg/L | 30/48 | SYR4 | 2017–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 17/17 | LCR | 2025 |
| Monochloroacetic Acid | 5.84 µg/L No EPA limit set
worst single sample: 6.4 µg/L | 17/48 | SYR4 | 2017–2019 |
| Bromoform | 3.41 µg/L No EPA limit set
worst single sample: 4.6 µg/L | 15/53 | SYR4 | 2017–2019 |
| Lead | 70.1 µg/L 467% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 208 µg/L | 15/98 | SYR4 | 2013–2019 |
| Barium | 304.4 µg/L 15% of the EPA limit 2000 µg/L
worst single sample: 398 µg/L | 14/14 | SYR4 | 2012–2019 |
| Chromium | 6.42 µg/L 6.4% of the EPA limit 100 µg/L
worst single sample: 7.2 µg/L | 14/14 | SYR4 | 2012–2019 |
| Fluoride | 532 µg/L 13% of the EPA limit 4000 µg/L
worst single sample: 560 µg/L | 8/14 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 1.43 µg/L No EPA limit set
worst single sample: 1.5 µg/L | 8/48 | SYR4 | 2017–2019 |
| Selenium | 1.185 µg/L 2.4% of the EPA limit 50 µg/L
worst single sample: 1.2 µg/L | 4/14 | SYR4 | 2012–2019 |
| Xylenes, Total | 0.7000 µg/L 0% of the EPA limit 10000 µg/L | 1/23 | SYR4 | 2012–2019 |
83 contaminants tested, none detected
Utility contact
Frequently asked questions about Aqua Pa West Chester
Is Aqua Pa West Chester tap water safe to drink?
EPA monitoring detected 25 contaminants in Aqua Pa West Chester'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 Aqua Pa West Chester's water?
EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Chloroform, Copper, Bromodichloromethane, and others. The full list with the level and data source for each is above.
How many people does Aqua Pa West Chester serve?
Aqua Pa West Chester reports serving 48,600 people in Pennsylvania, per its EPA record.
Has Aqua Pa West Chester had any water quality violations?
The EPA has 187 violations on file for Aqua Pa West Chester, of which 2 are health-based (a contaminant limit or required treatment was breached) and 0 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.