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 | Archived | 1994-03-01 → 1994-03-31 |
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Copper | 339 µg/L 26% of the EPA limit 1300 µg/L
worst single sample: 490 µg/L | 42/60 | SYR4 | 2014–2019 |
| TTHM | 69.8 µg/L 87% of the EPA limit 80 µg/L
worst single sample: 103 µg/L | 34/35 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 52.1 µg/L 87% of the EPA limit 60 µg/L
worst single sample: 57 µg/L | 30/31 | SYR4 | 2012–2019 |
| Bromodichloromethane | 11 µg/L No EPA limit set
worst single sample: 12 µg/L | 23/24 | SYR4 | 2014–2019 |
| Chloroform | 62.38 µg/L No EPA limit set
worst single sample: 91 µg/L | 23/24 | SYR4 | 2014–2019 |
| Dibromochloromethane | 1.71 µg/L No EPA limit set
worst single sample: 1.9 µg/L | 20/24 | SYR4 | 2014–2019 |
| Dichloroacetic Acid | 23.1 µg/L No EPA limit set
worst single sample: 24 µg/L | 19/20 | SYR4 | 2014–2019 |
| Trichloroacetic Acid | 29.3 µg/L No EPA limit set
worst single sample: 32 µg/L | 19/20 | SYR4 | 2014–2019 |
| Monochloroacetic Acid | 2.075 µg/L No EPA limit set
worst single sample: 2.3 µg/L | 10/20 | SYR4 | 2014–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 9/9 | LCR | 2025 |
| Lead | 2 µg/L 13% of the EPA limit 15 µg/L | 9/60 | SYR4 | 2014–2019 |
| Dibromoacetic Acid | 1.045 µg/L No EPA limit set
worst single sample: 1.1 µg/L | 3/20 | SYR4 | 2014–2019 |
| Monobromoacetic Acid | 0.7310 µg/L No EPA limit set
worst single sample: 0.7400 µg/L | 2/20 | SYR4 | 2014–2019 |
1 contaminants tested, none detected
Utility contact
Frequently asked questions about Jamestown-Rio Vista W&S District
Is Jamestown-Rio Vista W&S District tap water safe to drink?
EPA monitoring detected 13 contaminants in Jamestown-Rio Vista W&S District'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 Jamestown-Rio Vista W&S District's water?
EPA monitoring detected Copper, TTHM, Total Haloacetic Acids (HAA5), Bromodichloromethane, Chloroform, and others. The full list with the level and data source for each is above.
How many people does Jamestown-Rio Vista W&S District serve?
Jamestown-Rio Vista W&S District reports serving 560 people in Wyoming, per its EPA record.
Has Jamestown-Rio Vista W&S District had any water quality violations?
The EPA has 1 violation on file for Jamestown-Rio Vista W&S District, 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.