GRAND COULEE WATER DEPT CITY OF
Washington — Community Water System — PWSID: WA5328700
System Information
| PWSID | WA5328700 |
| System Name | GRAND COULEE WATER DEPT CITY OF |
| System Type | Community Water System |
| Water Source | Ground Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Feb 7, 1981 |
| Last Reported | Dec 11, 2025 |
Location & Contact
| State | Washington |
| City | Grand Coulee |
| ZIP Code | 99133 |
| Address | PO Box 180 |
| Organization | GRAND COULEE WATER DEPT CITY OF |
| Phone | — |
Population & Service
| Population Served | 1,428 |
| Service Connections | 662 |
Drinking Water Violations (4)
This water system has 4 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2010 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Oct 13, 2010 | Consumer Confidence Rule |
| Jan 1, 1992 | — | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Mar 8, 2006 | Surface Water Treatment Rule |
| Jan 1, 1992 | — | Surface Water Treatment Rule | TT | Yes | No | — | — | — | Resolved | Mar 8, 2006 | Surface Water Treatment Rule |
| Oct 1, 1979 | Oct 31, 1979 | Gross Alpha, Excl. Radon and U | MR | No | No | — | 15 pCi/L | — | Archived | Oct 31, 1979 | Radionuclides and Revised Rad 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.