COLONY SURF WATER SUPPLY
PWS ID: WA5314080 · Lilliwaup, Washington 98555
Population Served
285
Total Violations
37
Health-Based Violations
2
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 371
- County
- Mason
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 27
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 5 | 1998 |
| Nitrate | MR | 3 | 2016 |
| Consumer Confidence Rule | Other | 2 | 2015 |
| Coliform (TCR) | MCL | 2 | 2004 |
| Fluoride | MR | 2 | 2002 |
| Selenium | MR | 2 | 2002 |
| Cadmium | MR | 2 | 2002 |
| Barium | MR | 2 | 2002 |
| Mercury | MR | 2 | 2002 |
| Chromium | MR | 2 | 2002 |
| Gross Alpha, Excl. Radon and U | MR | 1 | 1979 |
| Antimony, Total | MR | 1 | 2002 |
| Beryllium, Total | MR | 1 | 2002 |
| Arsenic | MR | 1 | 1979 |
| Thallium, Total | MR | 1 | 2002 |
| CYANIDE | MR | 1 | 2002 |
| Nickel | MR | 1 | 2002 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.