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 | 2024-04-01 → 2024-06-30 |
| MCL | Health-based | Resolved | 2024-04-01 → 2024-06-30 |
| MCL | Health-based | Resolved | 2024-04-01 → 2024-06-30 |
| MCL | Health-based | Resolved | 2024-04-01 → 2024-06-30 |
| MCL | Health-based | Resolved | 2024-01-01 → 2024-03-31 |
| MCL | Health-based | Resolved | 2024-01-01 → 2024-03-31 |
| MCL | Health-based | Resolved | 2024-01-01 → 2024-03-31 |
| MCL | Health-based | Resolved | 2024-01-01 → 2024-03-31 |
PFAS detected
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| Pfba | 0.0110 µg/L | 5/8 | 2023 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| TTHM | 73.725 µg/L 92% of the EPA limit 80 µg/L
worst single sample: 78 µg/L | 58/58 | SYR4 | 2013–2019 |
| Total Haloacetic Acids (HAA5) | 49.56 µg/L 83% of the EPA limit 60 µg/L
worst single sample: 53.1 µg/L | 58/58 | SYR4 | 2013–2019 |
| Bromodichloromethane | 22.06 µg/L No EPA limit set
worst single sample: 23 µg/L | 52/52 | SYR4 | 2013–2019 |
| Chloroform | 46.36 µg/L No EPA limit set
worst single sample: 53.4 µg/L | 52/52 | SYR4 | 2013–2019 |
| Dibromochloromethane | 13.68 µg/L No EPA limit set
worst single sample: 19.4 µg/L | 52/52 | SYR4 | 2013–2019 |
| Dichloroacetic Acid | 23.56 µg/L No EPA limit set
worst single sample: 36 µg/L | 52/52 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 11.305 µg/L No EPA limit set
worst single sample: 14.5 µg/L | 52/52 | SYR4 | 2013–2019 |
| Copper | 195 µg/L 15% of the EPA limit 1300 µg/L
worst single sample: 232 µg/L | 41/50 | SYR4 | 2014–2017 |
| Dibromoacetic Acid | 3.37 µg/L No EPA limit set
worst single sample: 3.74 µg/L | 23/52 | SYR4 | 2013–2019 |
| Lead | 0.0026 mg/L 17% of the EPA limit 0.0150 mg/L | 12/12 | LCR | 2023 |
| Monochloroacetic Acid | 4.235 µg/L No EPA limit set
worst single sample: 4.28 µg/L | 10/52 | SYR4 | 2013–2019 |
| Bromoform | 4.0145 µg/L No EPA limit set
worst single sample: 4.13 µg/L | 8/52 | SYR4 | 2013–2019 |
| Lead | 10.1 µg/L 67% of the EPA limit 15 µg/L | 1/50 | SYR4 | 2014–2017 |
30 contaminants tested, none detected
Utility contact
Frequently asked questions about Dewey Public Works Authority
Is Dewey Public Works Authority tap water safe to drink?
EPA monitoring detected 14 contaminants in Dewey Public Works Authority'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 Dewey Public Works Authority's water?
EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Bromodichloromethane, Chloroform, Dibromochloromethane, and others. The full list with the level and data source for each is above.
How many people does Dewey Public Works Authority serve?
Dewey Public Works Authority reports serving 3,490 people in Oklahoma, per its EPA record.
Has Dewey Public Works Authority had any water quality violations?
The EPA has 56 violations on file for Dewey Public Works Authority, of which 18 are health-based (a contaminant limit or required treatment was breached) and 4 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.