INCHELIUM WATER DISTRICT
PWS ID: WA5335550 · Tonasket, Washington 98855-9433
Population Served
540
Total Violations
110
Health-Based Violations
19
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 246
- County
- Ferry
- School/Daycare
- No
- MCL Violations
- 19
- Monitoring Violations
- 88
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 13 | 2004 |
| Arsenic | MR | 9 | 2008 |
| Lead and Copper Rule | MR | 7 | 2002 |
| Cadmium | MR | 5 | 2002 |
| Chromium | MR | 5 | 2002 |
| Mercury | MR | 5 | 2002 |
| Selenium | MR | 5 | 2002 |
| Arsenic | MCL | 5 | 2013 |
| Barium | MR | 5 | 2002 |
| CYANIDE | MR | 4 | 2002 |
| Thallium, Total | MR | 4 | 2002 |
| Beryllium, Total | MR | 4 | 2002 |
| Antimony, Total | MR | 4 | 2002 |
| Consumer Confidence Rule | Other | 3 | 2021 |
| Nitrate | MR | 2 | 2003 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 2 | 2002 |
| ETHYLENE DIBROMIDE | MR | 2 | 2002 |
| cis-1,2-Dichloroethylene | MR | 1 | 2008 |
| o-Dichlorobenzene | MR | 1 | 2008 |
| p-Dichlorobenzene | MR | 1 | 2008 |
| 1,1-Dichloroethylene | MR | 1 | 2008 |
| 1,2-Dichloroethane | MR | 1 | 2008 |
| Carbon tetrachloride | MR | 1 | 2008 |
| 1,2-Dichloropropane | MR | 1 | 2008 |
| Trichloroethylene | MR | 1 | 2008 |
| 1,1,2-Trichloroethane | MR | 1 | 2008 |
| Tetrachloroethylene | MR | 1 | 2008 |
| CHLOROBENZENE | MR | 1 | 2008 |
| Toluene | MR | 1 | 2008 |
| Ethylbenzene | MR | 1 | 2008 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.