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 |
|---|---|---|---|
| Other | Monitoring | Unaddressed | 2025-07-01 |
| Other | Monitoring | Resolved | 2015-02-13 |
| Other | Monitoring | Resolved | 2015-02-13 |
| MR | Monitoring | Resolved | 2014-10-01 |
| MR | Monitoring | Resolved | 2014-10-01 |
| MR | Monitoring | Resolved | 2014-10-01 |
| MR | Monitoring | Resolved | 2014-10-01 |
| Other | Monitoring | Resolved | 2008-07-25 |
| Other | Monitoring | Resolved | 2008-07-10 |
| MR | Monitoring | Resolved | 2007-11-01 → 2007-11-30 |
PFAS detected
| Contaminant | Max | Detection rate | Period |
|---|---|---|---|
| Pfba | 0.0074 µg/L | 2/4 | 2025 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 557 µg/L 43% of the EPA limit 1300 µg/L
worst single sample: 810 µg/L | 47/50 | SYR4 | 2012–2018 |
| Bromodichloromethane | 14.04 µg/L No EPA limit set
worst single sample: 25.5 µg/L | 37/37 | SYR4 | 2012–2019 |
| Chloroform | 25.1 µg/L No EPA limit set
worst single sample: 40.4 µg/L | 37/37 | SYR4 | 2012–2019 |
| Dibromochloromethane | 6.052 µg/L No EPA limit set
worst single sample: 6.8 µg/L | 37/37 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 15 µg/L No EPA limit set
worst single sample: 20.8 µg/L | 37/37 | SYR4 | 2012–2019 |
| TTHM | 48.22 µg/L 60% of the EPA limit 80 µg/L
worst single sample: 55.3 µg/L | 37/37 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 31.6 µg/L 53% of the EPA limit 60 µg/L
worst single sample: 36 µg/L | 37/37 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 9.08 µg/L No EPA limit set
worst single sample: 16 µg/L | 37/37 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 2.625 µg/L No EPA limit set
worst single sample: 3.6 µg/L | 16/37 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 4.9 µg/L No EPA limit set
worst single sample: 5.6 µg/L | 15/37 | SYR4 | 2012–2019 |
| Bromoform | 3.02 µg/L No EPA limit set
worst single sample: 4.7 µg/L | 13/37 | SYR4 | 2012–2019 |
| Lead | 1.645 µg/L 11% of the EPA limit 15 µg/L
worst single sample: 1.7 µg/L | 12/50 | SYR4 | 2012–2018 |
| Lead | 0.0018 mg/L 12% of the EPA limit 0.0150 mg/L | 7/7 | LCR | 2025 |
| Monobromoacetic Acid | 3.48 µg/L No EPA limit set
worst single sample: 4 µg/L | 5/37 | SYR4 | 2012–2019 |
29 contaminants tested, none detected
Utility contact
Frequently asked questions about Denton County Fwsd 11-a
Is Denton County Fwsd 11-a tap water safe to drink?
EPA monitoring detected 15 contaminants in Denton County Fwsd 11-a'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 Denton County Fwsd 11-a's water?
EPA monitoring detected Copper, Bromodichloromethane, Chloroform, Dibromochloromethane, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.
How many people does Denton County Fwsd 11-a serve?
Denton County Fwsd 11-a reports serving 5,160 people in Texas, per its EPA record.
Has Denton County Fwsd 11-a had any water quality violations?
The EPA has 15 violations on file for Denton County Fwsd 11-a, of which 0 are health-based (a contaminant limit or required treatment was breached) and 1 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.