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 |
|---|---|---|---|
| MR | Monitoring | Resolved | 2024-10-01 → 2024-10-31 |
| MR | Monitoring | Resolved | 2024-10-01 → 2024-10-31 |
| MR | Monitoring | Resolved | 2024-04-01 → 2024-04-30 |
| MR | Monitoring | Resolved | 2024-04-01 → 2024-04-30 |
| MR | Monitoring | Resolved | 2023-01-01 → 2023-12-31 |
| MR | Monitoring | Resolved | 2023-01-01 → 2023-12-31 |
| MR | Monitoring | Resolved | 2023-01-01 → 2023-12-31 |
| MR | Monitoring | Resolved | 2023-01-01 → 2023-12-31 |
| MR | Monitoring | Resolved | 2022-04-01 → 2022-06-30 |
| MR | Monitoring | Resolved | 2022-04-01 → 2022-06-30 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 162.5 µg/L 13% of the EPA limit 1300 µg/L
worst single sample: 230 µg/L | 36/40 | SYR4 | 2014–2017 |
| Nitrate | 5010 µg/L 50% of the EPA limit 10000 µg/L
worst single sample: 5400 µg/L | 34/34 | SYR4 | 2012–2019 |
| TTHM | 4.4 µg/L 5.5% of the EPA limit 80 µg/L
worst single sample: 4.8 µg/L | 21/22 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 10/10 | LCR | 2023 |
| Arsenic | 2.91 µg/L 29% of the EPA limit 10 µg/L
worst single sample: 3 µg/L | 4/4 | SYR4 | 2014–2017 |
| Barium | 22 µg/L 1.1% of the EPA limit 2000 µg/L | 4/4 | SYR4 | 2014–2017 |
| Chromium | 1.97 µg/L 2% of the EPA limit 100 µg/L
worst single sample: 2 µg/L | 4/4 | SYR4 | 2014–2017 |
| Fluoride | 545.5 µg/L 14% of the EPA limit 4000 µg/L
worst single sample: 550 µg/L | 4/4 | SYR4 | 2014–2017 |
| Lead | 7.845 µg/L 52% of the EPA limit 15 µg/L
worst single sample: 9 µg/L | 4/40 | SYR4 | 2014–2017 |
| Lithium | 110 µg/L No EPA limit set | 4/4 | UCMR-5 | 2025 |
| Nitrate-Nitrite | 4348 µg/L 43% of the EPA limit 10000 µg/L
worst single sample: 4420 µg/L | 3/3 | SYR4 | 2012–2017 |
| Total Haloacetic Acids (HAA5) | 1.785 µg/L 3% of the EPA limit 60 µg/L
worst single sample: 1.8 µg/L | 2/22 | SYR4 | 2012–2019 |
83 contaminants tested, none detected
Utility contact
Frequently asked questions about Epcor - San Tan Anthem
Is Epcor - San Tan Anthem tap water safe to drink?
EPA monitoring detected 18 contaminants in Epcor - San Tan Anthem'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 Epcor - San Tan Anthem's water?
EPA monitoring detected Copper, Nitrate, TTHM, Lead, Arsenic, and others. The full list with the level and data source for each is above.
How many people does Epcor - San Tan Anthem serve?
Epcor - San Tan Anthem reports serving 10,362 people in Arizona, per its EPA record.
Has Epcor - San Tan Anthem had any water quality violations?
The EPA has 54 violations on file for Epcor - San Tan Anthem, of which 0 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.