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 | Addressed | 2024-10-17 |
| TT | Health-based | Addressed | 2024-10-17 |
| MCL | Health-based | Resolved | 2016-01-01 → 2016-12-31 |
| MCL | Health-based | Resolved | 2016-01-01 → 2016-12-31 |
| MCL | Health-based | Resolved | 2016-01-01 → 2016-12-31 |
| MCL | Health-based | Resolved | 2016-01-01 → 2016-12-31 |
| MCL | Health-based | Resolved | 2016-01-01 → 2016-12-31 |
| MCL | Health-based | Resolved | 2016-01-01 → 2016-12-31 |
| MCL | Health-based | Resolved | 2016-01-01 → 2016-12-31 |
| MCL | Health-based | Resolved | 2016-01-01 → 2016-12-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate-Nitrite | 11100 µg/L 111% of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 15800 µg/L | 84/86 | SYR4 | 2012–2019 |
| Copper | 329 µg/L 25% of the EPA limit 1300 µg/L
worst single sample: 494 µg/L | 29/29 | SYR4 | 2013–2019 |
| Arsenic | 4.96 µg/L 50% of the EPA limit 10 µg/L
worst single sample: 5.2 µg/L | 13/13 | SYR4 | 2013–2019 |
| Lead | 0.0064 mg/L 43% of the EPA limit 0.0150 mg/L | 13/13 | LCR | 2025 |
| Barium | 289 µg/L 14% of the EPA limit 2000 µg/L
worst single sample: 326 µg/L | 6/6 | SYR4 | 2014–2019 |
| Bromoform | 3.56 µg/L No EPA limit set
worst single sample: 4 µg/L | 5/24 | SYR4 | 2012–2019 |
| Combined Uranium | 4.168 µg/L 14% of the EPA limit 30 µg/L
worst single sample: 4.19 µg/L | 5/5 | SYR4 | 2016 |
| Gross Alpha, Excl. Radon And U | 7.95 pCi/L 53% of the EPA limit 15 pCi/L
worst single sample: 8.2 pCi/L | 5/5 | SYR4 | 2016 |
| Dibromochloromethane | 6.175 µg/L No EPA limit set
worst single sample: 7 µg/L | 4/24 | SYR4 | 2012–2019 |
| Chloroform | 28.03 µg/L No EPA limit set
worst single sample: 31 µg/L | 3/24 | SYR4 | 2012–2019 |
| Bromodichloromethane | 8.675 µg/L No EPA limit set
worst single sample: 9.1 µg/L | 2/24 | SYR4 | 2012–2019 |
| cis-1,2-Dichloroethylene | 4.25 µg/L 6.1% of the EPA limit 70 µg/L
worst single sample: 4.3 µg/L | 2/26 | SYR4 | 2012–2018 |
| Lithium | 18.6 µg/L No EPA limit set | 2/2 | UCMR-5 | 2023 |
| trans-1,2-Dichloroethylene | 5.65 µg/L 5.7% of the EPA limit 100 µg/L
worst single sample: 5.7 µg/L | 2/26 | SYR4 | 2012–2018 |
| Carbon Tetrachloride | 1.1 µg/L 22% of the EPA limit 5 µg/L | 1/26 | SYR4 | 2012–2018 |
| Lead | 11.7 µg/L 78% of the EPA limit 15 µg/L | 1/29 | SYR4 | 2013–2019 |
| TTHM | 2.5 µg/L 3.1% of the EPA limit 80 µg/L | 1/8 | SYR4 | 2012–2019 |
73 contaminants tested, none detected
Utility contact
Frequently asked questions about Hydro Pwa
Is Hydro Pwa tap water safe to drink?
EPA monitoring detected 17 contaminants in Hydro Pwa'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 Hydro Pwa's water?
EPA monitoring detected Nitrate-Nitrite, Copper, Arsenic, Lead, Barium, and others. The full list with the level and data source for each is above.
How many people does Hydro Pwa serve?
Hydro Pwa reports serving 1,060 people in Oklahoma, per its EPA record.
Has Hydro Pwa had any water quality violations?
The EPA has 193 violations on file for Hydro Pwa, of which 35 are health-based (a contaminant limit or required treatment was breached) and 6 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.