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 | 2015-06-01 → 2015-06-30 |
| MCL | Health-based | Resolved | 2015-06-01 → 2015-06-30 |
| MCL | Health-based | Resolved | 2015-06-01 → 2015-06-30 |
| MCL | Health-based | Resolved | 2015-06-01 → 2015-06-30 |
| MR | Monitoring | Resolved | 2013-12-30 |
| MR | Monitoring | Resolved | 2005-09-01 → 2005-09-30 |
| MR | Monitoring | Resolved | 2005-09-01 → 2005-09-30 |
| MR | Monitoring | Resolved | 2005-09-01 → 2005-09-30 |
| MR | Monitoring | Resolved | 2005-09-01 → 2005-09-30 |
| Other | Monitoring | Resolved | 2003-07-01 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 20.26 µg/L No EPA limit set
worst single sample: 29.7 µg/L | 125/125 | SYR4 | 2012–2019 |
| Chloroform | 21.46 µg/L No EPA limit set
worst single sample: 28.2 µg/L | 125/125 | SYR4 | 2012–2019 |
| Dibromochloromethane | 9.472 µg/L No EPA limit set
worst single sample: 12.1 µg/L | 125/125 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 15.7 µg/L No EPA limit set
worst single sample: 20.1 µg/L | 125/125 | SYR4 | 2012–2019 |
| TTHM | 52.28 µg/L 65% of the EPA limit 80 µg/L
worst single sample: 56.9 µg/L | 125/125 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 26.26 µg/L 44% of the EPA limit 60 µg/L
worst single sample: 36.3 µg/L | 125/125 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 6.4 µg/L No EPA limit set
worst single sample: 9 µg/L | 124/125 | SYR4 | 2012–2019 |
| Copper | 331.25 µg/L 25% of the EPA limit 1300 µg/L
worst single sample: 744 µg/L | 94/94 | SYR4 | 2013–2019 |
| Dibromoacetic Acid | 4.065 µg/L No EPA limit set
worst single sample: 8.7 µg/L | 70/125 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 8.64 µg/L No EPA limit set
worst single sample: 9.8 µg/L | 62/125 | SYR4 | 2012–2019 |
| Lead | 16.316 µg/L 109% of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 58 µg/L | 49/94 | SYR4 | 2013–2019 |
| Monobromoacetic Acid | 2.565 µg/L No EPA limit set
worst single sample: 3 µg/L | 48/125 | SYR4 | 2012–2019 |
| Bromoform | 2.118 µg/L No EPA limit set
worst single sample: 7.4 µg/L | 39/125 | SYR4 | 2012–2019 |
| Lead | 0.0031 mg/L 21% of the EPA limit 0.0150 mg/L | 15/15 | LCR | 2025 |
24 contaminants tested, none detected
Utility contact
Frequently asked questions about City of Colleyville
Is City of Colleyville tap water safe to drink?
EPA monitoring detected 20 contaminants in City of Colleyville'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 Colleyville's water?
EPA monitoring detected Bromodichloromethane, Chloroform, Dibromochloromethane, Dichloroacetic Acid, TTHM, and others. The full list with the level and data source for each is above.
How many people does City of Colleyville serve?
City of Colleyville reports serving 26,599 people in Texas, per its EPA record.
Has City of Colleyville had any water quality violations?
The EPA has 13 violations on file for City of Colleyville, of which 4 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.