POTHOLES STATE PARK
Washington — Transient Non-Community — PWSID: WA53SP690
System Information
| PWSID | WA53SP690 |
| System Name | POTHOLES 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 | Mar 26, 2026 |
Location & Contact
| State | Washington |
| City | Coulee City |
| ZIP Code | 99115 |
| Address | 34875 Park Lake Rd NE |
| Organization | POTHOLES STATE PARK |
| Phone | — |
Population & Service
| Population Served | 1,456 |
| Service Connections | 81 |
Drinking Water Violations (13)
This water system has 13 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2021 | Jun 30, 2021 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2021 | — | |
| Oct 1, 2020 | Dec 31, 2020 | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2020 | — | |
| Jan 1, 2020 | Dec 31, 2020 | MCL | Yes | No | 12 MG/L | 10 mg/L | — | Resolved | Dec 31, 2020 | — | |
| Aug 1, 2003 | Aug 31, 2003 | MCL | Yes | No | — | 5% of samples | — | Archived | Aug 31, 2003 | — | |
| Jul 1, 2003 | Jul 31, 2003 | MCL | Yes | No | — | 5% of samples | — | Archived | Jul 31, 2003 | — | |
| Nov 1, 1999 | Nov 30, 1999 | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 1999 | — | |
| Nov 1, 1999 | Nov 30, 1999 | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 1999 | — | |
| Nov 1, 1999 | Nov 30, 1999 | MCL | Yes | No | — | 5% of samples | — | Archived | Nov 30, 1999 | — | |
| Feb 1, 1998 | Feb 28, 1998 | MCL | Yes | No | — | 5% of samples | — | Archived | Feb 28, 1998 | — | |
| Feb 1, 1998 | Feb 28, 1998 | MCL | Yes | No | — | 5% of samples | — | Archived | Feb 28, 1998 | — | |
| Feb 1, 1998 | Feb 28, 1998 | MCL | Yes | No | — | 5% of samples | — | Archived | Feb 28, 1998 | — | |
| Oct 1, 1991 | Oct 31, 1991 | MR | No | Yes | — | 5% of samples | — | Archived | Oct 31, 1991 | — | |
| — | — | — | No | No | — | — | — | — | — | — |
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.