OMAK CITY OF
Washington — Community Water System — PWSID: WA5363750
System Information
| PWSID | WA5363750 |
| System Name | OMAK CITY OF |
| System Type | Community Water System |
| Water Source | Ground Water |
| 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 | Omak |
| ZIP Code | 98841 |
| Address | PO Box 72 |
| Organization | OMAK CITY OF |
| Phone | — |
Population & Service
| Population Served | 4,940 |
| Service Connections | 2,520 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2017 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Feb 1, 2018 | Consumer Confidence Rule |
| Nov 1, 2016 | Nov 30, 2016 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Nov 30, 2016 | Revised Total Coliform Rule |
| Jan 1, 2007 | Dec 31, 2007 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2007 | Nitrate Rule |
| Jan 1, 2007 | Dec 31, 2007 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2007 | Nitrate Rule |
| Jan 1, 2007 | Dec 31, 2007 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2007 | Nitrate Rule |
| Jan 1, 2007 | Dec 31, 2007 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2007 | Nitrate Rule |
| Jan 1, 2007 | Dec 31, 2007 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2007 | Nitrate Rule |
| Jan 1, 2007 | Dec 31, 2007 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Dec 31, 2007 | Nitrate Rule |
| Oct 19, 1994 | Nov 18, 1994 | Coliform (TCR) | MR | No | Yes | — | 5% of samples | — | Archived | Nov 18, 1994 | Total Coliform Rule |
| Jul 1, 1993 | Jan 1, 1994 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jan 1, 1994 | Lead and Copper Rule |
| Jul 1, 1993 | Jan 1, 1994 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jan 1, 1994 | Lead and Copper 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 |
| — | — | — | 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.