Mary M Knight School
PWS ID: WA5342895 · UNION, Washington 98592-9649
Population Served
270
Total Violations
35
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 1
- County
- Mason
- School/Daycare
- Yes
- MCL Violations
- 4
- Monitoring Violations
- 30
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 23 | 2005 |
| Coliform (TCR) | MR | 7 | 1997 |
| Coliform (TCR) | MCL | 4 | 1992 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.