VISTAS INC
PWS ID: WA5358144 · SEQUIM, Washington 98382
Population Served
241
Total Violations
336
Health-Based Violations
1
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 124
- County
- Clallam
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 324
- Treatment Tech Violations
- 1
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 34 | 2018 |
| Lead and Copper Rule | MR | 20 | 2007 |
| Pentachlorophenol | MR | 8 | 2008 |
| 1,2,4-Trichlorobenzene | MR | 6 | 2008 |
| cis-1,2-Dichloroethylene | MR | 6 | 2008 |
| DICHLOROMETHANE | MR | 6 | 2008 |
| o-Dichlorobenzene | MR | 6 | 2008 |
| Vinyl chloride | MR | 6 | 2008 |
| 1,2-Dichloroethane | MR | 6 | 2008 |
| Carbon tetrachloride | MR | 6 | 2008 |
| 1,2-Dichloropropane | MR | 6 | 2008 |
| Trichloroethylene | MR | 6 | 2008 |
| 1,1,2-Trichloroethane | MR | 6 | 2008 |
| Tetrachloroethylene | MR | 6 | 2008 |
| Benzene | MR | 6 | 2008 |
| Toluene | MR | 6 | 2008 |
| Ethylbenzene | MR | 6 | 2008 |
| Styrene | MR | 6 | 2008 |
| p-Dichlorobenzene | MR | 6 | 2008 |
| 1,1-Dichloroethylene | MR | 6 | 2008 |
| trans-1,2-Dichloroethylene | MR | 6 | 2008 |
| 1,1,1-Trichloroethane | MR | 6 | 2008 |
| CHLOROBENZENE | MR | 6 | 2008 |
| Consumer Confidence Rule | Other | 5 | 2025 |
| Coliform (TCR) | MR | 5 | 1995 |
| Chromium | MR | 4 | 2008 |
| Fluoride | MR | 4 | 2008 |
| Mercury | MR | 4 | 2008 |
| Nickel | MR | 4 | 2008 |
| Selenium | MR | 4 | 2008 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.