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 | 2011-04-01 → 2011-04-30 |
| MCL | Health-based | Resolved | 2011-04-01 → 2011-04-30 |
| MCL | Health-based | Resolved | 2011-04-01 → 2011-04-30 |
| MCL | Health-based | Resolved | 2011-04-01 → 2011-04-30 |
| MCL | Health-based | Resolved | 2010-06-01 → 2010-06-30 |
| MCL | Health-based | Resolved | 2010-06-01 → 2010-06-30 |
| MCL | Health-based | Resolved | 2010-06-01 → 2010-06-30 |
| Other | Monitoring | Resolved | 2010-08-02 |
| Other | Monitoring | Resolved | 2010-08-02 |
| MR | Monitoring | Resolved | 2010-06-01 → 2010-06-30 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromodichloromethane | 24.045 µg/L No EPA limit set
worst single sample: 29.6 µg/L | 312/312 | SYR4 | 2012–2019 |
| Chloroform | 19.845 µg/L No EPA limit set
worst single sample: 27.7 µg/L | 312/312 | SYR4 | 2012–2019 |
| Dibromochloromethane | 14.835 µg/L No EPA limit set
worst single sample: 18.5 µg/L | 312/312 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 19.545 µg/L No EPA limit set
worst single sample: 30.5 µg/L | 312/312 | SYR4 | 2012–2019 |
| TTHM | 56 µg/L 70% of the EPA limit 80 µg/L
worst single sample: 62.5 µg/L | 312/312 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 34.49 µg/L 57% of the EPA limit 60 µg/L
worst single sample: 51.5 µg/L | 312/312 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 6.645 µg/L No EPA limit set
worst single sample: 10 µg/L | 312/312 | SYR4 | 2012–2019 |
| Copper | 882.015 µg/L 68% of the EPA limit 1300 µg/L
worst single sample: 1163.75 µg/L | 300/300 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 13.76 µg/L No EPA limit set
worst single sample: 20.6 µg/L | 229/312 | SYR4 | 2012–2019 |
| Bromoform | 5.8985 µg/L No EPA limit set
worst single sample: 11.9 µg/L | 222/312 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 4.5 µg/L No EPA limit set
worst single sample: 7.8 µg/L | 198/312 | SYR4 | 2012–2019 |
| Lead | 10.8215 µg/L 72% of the EPA limit 15 µg/L
worst single sample: 27.3 µg/L | 184/300 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 6.745 µg/L No EPA limit set
worst single sample: 10.9 µg/L | 132/312 | SYR4 | 2012–2019 |
| Lead | 0.0014 mg/L 9.3% of the EPA limit 0.0150 mg/L | 19/19 | LCR | 2025 |
26 contaminants tested, none detected
Utility contact
Frequently asked questions about City of Plano
Is City of Plano tap water safe to drink?
EPA monitoring detected 18 contaminants in City of Plano'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 Plano'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 Plano serve?
City of Plano reports serving 292,059 people in Texas, per its EPA record.
Has City of Plano had any water quality violations?
The EPA has 17 violations on file for City of Plano, of which 7 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.