WINLOCK HIGH SCHOOL
PWS ID: WA5356555 · WInlock, Washington 98596
Population Served
400
Total Violations
32
Health-Based Violations
3
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 3
- County
- Lewis
- School/Daycare
- Yes
- MCL Violations
- 3
- Monitoring Violations
- 27
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 12 | 2020 |
| Lead and Copper Rule | MR | 11 | 2006 |
| Coliform (TCR) | MR | 4 | 2000 |
| Coliform (TCR) | MCL | 3 | 1991 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.