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 | 2007-09-01 → 2007-09-30 |
| MR | Monitoring | Resolved | 2007-09-01 → 2007-09-30 |
| MR | Monitoring | Resolved | 2007-09-01 → 2007-09-30 |
| MR | Monitoring | Resolved | 2005-07-01 → 2005-07-31 |
| MR | Monitoring | Resolved | 2005-07-01 → 2005-07-31 |
| MR | Monitoring | Resolved | 2005-02-01 → 2005-02-28 |
| MR | Monitoring | Resolved | 2005-02-01 → 2005-02-28 |
| MR | Monitoring | Resolved | 1993-07-01 → 2003-12-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Fluoride | 700 µg/L 18% of the EPA limit 4000 µg/L | 6/6 | SYR4 | 2013–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 4/4 | LCR | 2024 |
| Barium | 2.1 µg/L 0.1% of the EPA limit 2000 µg/L | 2/6 | SYR4 | 2013–2019 |
| Nitrate | 100 µg/L 1% of the EPA limit 10000 µg/L | 2/32 | SYR4 | 2013–2019 |
| Selenium | 3 µg/L 6% of the EPA limit 50 µg/L | 2/6 | SYR4 | 2013–2019 |
| Bromodichloromethane | 8.6 µg/L No EPA limit set | 1/1 | SYR4 | 2019 |
| Bromoform | 7.1 µg/L No EPA limit set | 1/1 | SYR4 | 2019 |
| Chloroform | 3.4 µg/L No EPA limit set | 1/1 | SYR4 | 2019 |
| Dibromoacetic Acid | 7 µg/L No EPA limit set | 1/1 | SYR4 | 2019 |
| Dibromochloromethane | 14 µg/L No EPA limit set | 1/1 | SYR4 | 2019 |
| Dichloroacetic Acid | 3.2 µg/L No EPA limit set | 1/1 | SYR4 | 2019 |
| Lead | 0.3000 µg/L 2% of the EPA limit 15 µg/L | 1/6 | SYR4 | 2013–2019 |
| TTHM | 33 µg/L 41% of the EPA limit 80 µg/L | 1/1 | SYR4 | 2019 |
| Total Haloacetic Acids (HAA5) | 12 µg/L 20% of the EPA limit 60 µg/L | 1/1 | SYR4 | 2019 |
| Trichloroacetic Acid | 2 µg/L No EPA limit set | 1/1 | SYR4 | 2019 |
37 contaminants tested, none detected
Utility contact
Frequently asked questions about Terra De Oro Water Company
Is Terra De Oro Water Company tap water safe to drink?
EPA monitoring detected 15 contaminants in Terra De Oro Water Company'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 Terra De Oro Water Company's water?
EPA monitoring detected Fluoride, Lead, Barium, Nitrate, Selenium, and others. The full list with the level and data source for each is above.
How many people does Terra De Oro Water Company serve?
Terra De Oro Water Company reports serving 38 people in California, per its EPA record.
Has Terra De Oro Water Company had any water quality violations?
The EPA has 8 violations on file for Terra De Oro Water Company, 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.