KILCHIS WATER DISTRICT
PWS ID: OR4100080 · TILLAMOOK, Oregon 97141
Population Served
500
Total Violations
42
Health-Based Violations
13
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 160
- County
- Tillamook
- School/Daycare
- No
- MCL Violations
- 8
- Monitoring Violations
- 23
- Treatment Tech Violations
- 5
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 8 | 2012 |
| Nitrate | MR | 5 | 2008 |
| Lead and Copper Rule | TT | 5 | 1996 |
| Consumer Confidence Rule | Other | 3 | 2023 |
| E. COLI | MR | 3 | 2023 |
| Coliform (TCR) | MR | 2 | 2000 |
| Surface Water Treatment Rule | MR | 2 | 1994 |
| Public Notice | Other | 2 | 2012 |
| TTHM | MR | 1 | 2016 |
| Combined Radium (-226 and -228) | MR | 1 | 1976 |
| Fluoride | MR | 1 | 1979 |
| Cadmium | MR | 1 | 1979 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1976 |
| Arsenic | MR | 1 | 1979 |
| Mercury | MR | 1 | 1979 |
| Chromium | MR | 1 | 1979 |
| Total Haloacetic Acids (HAA5) | MR | 1 | 2016 |
| Selenium | MR | 1 | 1979 |
| Barium | MR | 1 | 1979 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.