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 | 2001-02-01 → 2001-02-28 |
| MCL | Health-based | Archived | 1987-10-01 → 1987-12-31 |
| Other | Monitoring | Resolved | 2025-10-02 |
| Other | Monitoring | Resolved | 2025-10-02 |
| RPT | Monitoring | Resolved | 2025-07-02 |
| RPT | Monitoring | Resolved | 2025-07-02 |
| Other | Monitoring | Resolved | 2025-07-01 |
| Other | Monitoring | Resolved | 2025-07-01 |
| MR | Monitoring | Resolved | 2025-01-01 |
| MR | Monitoring | Resolved | 2025-01-01 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Lead | 0.0011 mg/L 7.3% of the EPA limit 0.0150 mg/L | 5/5 | LCR | 2024 |
| Arsenic | 1.1 µg/L 11% of the EPA limit 10 µg/L | 2/2 | SYR4 | 2013 |
| Barium | 76 µg/L 3.8% of the EPA limit 2000 µg/L | 2/2 | SYR4 | 2013 |
| Fluoride | 350 µg/L 8.8% of the EPA limit 4000 µg/L | 2/2 | SYR4 | 2013 |
65 contaminants tested, none detected
Utility contact
Frequently asked questions about Hardyville on the River
Is Hardyville on the River tap water safe to drink?
EPA monitoring detected 4 contaminants in Hardyville on the River'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 Hardyville on the River's water?
EPA monitoring detected Lead, Arsenic, Barium, Fluoride. The full list with the level and data source for each is above.
How many people does Hardyville on the River serve?
Hardyville on the River reports serving 42 people in California, per its EPA record.
Has Hardyville on the River had any water quality violations?
The EPA has 212 violations on file for Hardyville on the River, of which 2 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.