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 | Archived | 2024-10-01 → 2024-12-31 |
| TT | Health-based | Archived | 2024-10-01 → 2024-12-31 |
| TT | Health-based | Archived | 2024-10-01 → 2024-12-31 |
| TT | Health-based | Archived | 2024-10-01 → 2024-12-31 |
| TT | Health-based | Archived | 2024-07-01 → 2024-09-30 |
| TT | Health-based | Archived | 2024-07-01 → 2024-09-30 |
| TT | Health-based | Archived | 2024-07-01 → 2024-09-30 |
| TT | Health-based | Archived | 2024-07-01 → 2024-09-30 |
| TT | Health-based | Archived | 2024-04-01 → 2024-06-30 |
| TT | Health-based | Archived | 2024-04-01 → 2024-06-30 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| TTHM | 190.265 µg/L 238% of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 226 µg/L | 128/128 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 77.9 µg/L 130% of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 84.3 µg/L | 127/128 | SYR4 | 2012–2019 |
| Bromodichloromethane | 55.88 µg/L No EPA limit set
worst single sample: 68.4 µg/L | 117/118 | SYR4 | 2012–2019 |
| Chloroform | 112.2 µg/L No EPA limit set
worst single sample: 126 µg/L | 117/118 | SYR4 | 2012–2019 |
| Dibromochloromethane | 49.96 µg/L No EPA limit set
worst single sample: 55.2 µg/L | 117/118 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 33.85 µg/L No EPA limit set
worst single sample: 37.4 µg/L | 116/116 | SYR4 | 2012–2019 |
| Bromoform | 14.945 µg/L No EPA limit set
worst single sample: 18.6 µg/L | 114/118 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 34.6 µg/L No EPA limit set
worst single sample: 43.9 µg/L | 114/116 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 12 µg/L No EPA limit set
worst single sample: 15.9 µg/L | 111/116 | SYR4 | 2012–2019 |
| Copper | 132.2 µg/L 10% of the EPA limit 1300 µg/L
worst single sample: 265 µg/L | 78/90 | SYR4 | 2012–2018 |
| Monobromoacetic Acid | 2.65 µg/L No EPA limit set
worst single sample: 3.7 µg/L | 56/116 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 4.9 µg/L No EPA limit set
worst single sample: 5.3 µg/L | 52/116 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 14/14 | LCR | 2024 |
| Nitrate-Nitrite | 350 µg/L 3.5% of the EPA limit 10000 µg/L | 14/16 | SYR4 | 2012–2019 |
| Lithium | 14.2 µg/L No EPA limit set | 8/8 | UCMR-5 | 2024 |
| Gross Beta Particle Activity | 12.382 pCi/L No EPA limit set
worst single sample: 12.77 pCi/L | 2/2 | SYR4 | 2012–2018 |
| Lead | 126.645 µg/L 844% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 133 µg/L | 2/90 | SYR4 | 2012–2018 |
| Barium | 237 µg/L 12% of the EPA limit 2000 µg/L | 1/1 | SYR4 | 2013 |
| Combined Radium (-226 And -228) | 1.49 pCi/L 30% of the EPA limit 5 pCi/L | 1/2 | SYR4 | 2012–2018 |
| Dalapon | 1.44 µg/L 0.7% of the EPA limit 200 µg/L | 1/6 | SYR4 | 2018–2019 |
| Fluoride | 280 µg/L 7% of the EPA limit 4000 µg/L | 1/1 | SYR4 | 2013 |
84 contaminants tested, none detected
Utility contact
Frequently asked questions about Duncan Public Utilities Authority
Is Duncan Public Utilities Authority tap water safe to drink?
EPA monitoring detected 25 contaminants in Duncan Public Utilities 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 Duncan Public Utilities 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 Duncan Public Utilities Authority serve?
Duncan Public Utilities Authority reports serving 23,000 people in Oklahoma, per its EPA record.
Has Duncan Public Utilities Authority had any water quality violations?
The EPA has 842 violations on file for Duncan Public Utilities Authority, of which 792 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.