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 | 1995-12-01 → 1996-01-31 |
| MCL | Health-based | Resolved | 1995-12-01 → 1996-01-31 |
| MCL | Health-based | Resolved | 1995-11-01 → 1995-11-30 |
| MCL | Health-based | Resolved | 1995-11-01 → 1995-11-30 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 4972 µg/L 50% of the EPA limit 10000 µg/L
worst single sample: 5650 µg/L | 100/100 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 32/32 | LCR | 2025 |
| Fluoride | 160 µg/L 4% of the EPA limit 4000 µg/L
worst single sample: 210 µg/L | 21/26 | SYR4 | 2012–2018 |
| TTHM | 45.34 µg/L 57% of the EPA limit 80 µg/L
worst single sample: 58.45 µg/L | 21/24 | SYR4 | 2019 |
| Total Haloacetic Acids (HAA5) | 22.4 µg/L 37% of the EPA limit 60 µg/L
worst single sample: 26.6 µg/L | 21/24 | SYR4 | 2019 |
| Bromodichloromethane | 7.004 µg/L No EPA limit set
worst single sample: 8.98 µg/L | 20/24 | SYR4 | 2019 |
| Chloroform | 19.7325 µg/L No EPA limit set
worst single sample: 20.73 µg/L | 20/24 | SYR4 | 2019 |
| Dichloroacetic Acid | 11.925 µg/L No EPA limit set
worst single sample: 12.4 µg/L | 20/24 | SYR4 | 2019 |
| Dibromochloromethane | 17.832 µg/L No EPA limit set
worst single sample: 23.7 µg/L | 19/24 | SYR4 | 2019 |
| Trichloroacetic Acid | 11.4 µg/L No EPA limit set
worst single sample: 12.3 µg/L | 19/24 | SYR4 | 2019 |
| Dibromoacetic Acid | 10.255 µg/L No EPA limit set
worst single sample: 13.7 µg/L | 14/24 | SYR4 | 2019 |
| Barium | 326 µg/L 16% of the EPA limit 2000 µg/L
worst single sample: 330 µg/L | 9/9 | SYR4 | 2012–2018 |
| Bromoform | 22.318 µg/L No EPA limit set
worst single sample: 23.26 µg/L | 7/24 | SYR4 | 2019 |
| Lithium | 16.8 µg/L No EPA limit set | 3/8 | UCMR-5 | 2025 |
| Monobromoacetic Acid | 1.99 µg/L No EPA limit set
worst single sample: 2 µg/L | 2/24 | SYR4 | 2019 |
| Combined Uranium | 2.831 µg/L 9.4% of the EPA limit 30 µg/L | 1/1 | SYR4 | 2018 |
| Glyphosate | 50 µg/L 7.1% of the EPA limit 700 µg/L | 1/14 | SYR4 | 2014–2018 |
| Gross Beta Particle Activity | 0.5290 pCi/L No EPA limit set | 1/1 | SYR4 | 2018 |
85 contaminants tested, none detected
Utility contact
Frequently asked questions about City of Pleasanton
Is City of Pleasanton tap water safe to drink?
EPA monitoring detected 26 contaminants in City of Pleasanton'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 Pleasanton's water?
EPA monitoring detected Nitrate, Lead, Fluoride, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.
How many people does City of Pleasanton serve?
City of Pleasanton reports serving 76,689 people in California, per its EPA record.
Has City of Pleasanton had any water quality violations?
The EPA has 4 violations on file for City of Pleasanton, 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.