WANAPUM STATE PARK
Washington — Transient Non-Community — PWSID: WA53SP975
System Information
| PWSID | WA53SP975 |
| System Name | WANAPUM STATE PARK |
| System Type | Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | State |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 7, 1981 |
| Last Reported | Dec 11, 2025 |
Location & Contact
| State | Washington |
| City | Ellensburg |
| ZIP Code | 98926 |
| Address | PO Box 893 |
| Organization | WANAPUM STATE PARK |
| Phone | — |
Population & Service
| Population Served | 2,263 |
| Service Connections | 61 |
Drinking Water Violations (6)
This water system has 6 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov 1, 2022 | Nov 30, 2022 | Revised Total Coliform Rule | MCL | Yes | No | — | — | — | Resolved | Nov 30, 2022 | Revised Total Coliform Rule |
| Nov 1, 2022 | Nov 30, 2022 | Revised Total Coliform Rule | MCL | Yes | No | — | — | — | Resolved | Nov 30, 2022 | Revised Total Coliform Rule |
| Jan 1, 2019 | Jan 31, 2019 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Jan 31, 2019 | Revised Total Coliform Rule |
| Sep 1, 2010 | Sep 30, 2010 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2010 | Total Coliform Rule |
| Sep 1, 2010 | Sep 30, 2010 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2010 | Total Coliform Rule |
| May 1, 1992 | May 31, 1992 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | May 31, 1992 | Total Coliform Rule |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.