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 | 2007-12-01 → 2007-12-31 |
| MCL | Health-based | Resolved | 2007-12-01 → 2007-12-31 |
| MCL | Health-based | Resolved | 2007-12-01 → 2007-12-31 |
| MCL | Health-based | Resolved | 2007-12-01 → 2007-12-31 |
| MCL | Health-based | Resolved | 2007-12-01 → 2007-12-31 |
| MCL | Health-based | Resolved | 2007-11-01 → 2007-11-30 |
| MCL | Health-based | Resolved | 2007-11-01 → 2007-11-30 |
| MCL | Health-based | Resolved | 2007-11-01 → 2007-11-30 |
| MCL | Health-based | Resolved | 2007-11-01 → 2007-11-30 |
| MCL | Health-based | Resolved | 2007-11-01 → 2007-11-30 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 9.82 µg/L No EPA limit set
worst single sample: 12.1 µg/L | 125/125 | SYR4 | 2012–2019 |
| Chloroform | 11.68 µg/L No EPA limit set
worst single sample: 18.1 µg/L | 125/125 | SYR4 | 2012–2019 |
| TTHM | 22.92 µg/L 29% of the EPA limit 80 µg/L
worst single sample: 28.7 µg/L | 125/125 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 19.155 µg/L 32% of the EPA limit 60 µg/L
worst single sample: 48.1 µg/L | 124/125 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 12.7 µg/L No EPA limit set
worst single sample: 30.6 µg/L | 121/125 | SYR4 | 2012–2019 |
| Dibromochloromethane | 5.8035 µg/L No EPA limit set
worst single sample: 8.5 µg/L | 120/125 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 2.7 µg/L No EPA limit set
worst single sample: 31.1 µg/L | 91/125 | SYR4 | 2012–2019 |
| Copper | 673.6 µg/L 52% of the EPA limit 1300 µg/L
worst single sample: 1000 µg/L | 89/90 | SYR4 | 2013–2017 |
| Dibromoacetic Acid | 2.83 µg/L No EPA limit set
worst single sample: 7.6 µg/L | 75/125 | SYR4 | 2012–2019 |
| Bromoform | 2.6405 µg/L No EPA limit set
worst single sample: 2.75 µg/L | 72/125 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 5.94 µg/L No EPA limit set
worst single sample: 8.1 µg/L | 57/125 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 2.04 µg/L No EPA limit set
worst single sample: 2.4 µg/L | 27/125 | SYR4 | 2012–2019 |
| Lead | 26.3 µg/L 175% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 32 µg/L | 20/90 | SYR4 | 2013–2017 |
| Lead | 0.0011 mg/L 7.3% of the EPA limit 0.0150 mg/L | 15/15 | LCR | 2023 |
25 contaminants tested, none detected
Utility contact
Frequently asked questions about City of Duncanville
Is City of Duncanville tap water safe to drink?
EPA monitoring detected 19 contaminants in City of Duncanville'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 City of Duncanville's water?
EPA monitoring detected Bromodichloromethane, Chloroform, TTHM, Total Haloacetic Acids (HAA5), Dichloroacetic Acid, and others. The full list with the level and data source for each is above.
How many people does City of Duncanville serve?
City of Duncanville reports serving 39,413 people in Texas, per its EPA record.
Has City of Duncanville had any water quality violations?
The EPA has 29 violations on file for City of Duncanville, of which 19 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.