CATHLAMET WATER DEPT
Washington — Community Water System — PWSID: WA5311850
System Information
| PWSID | WA5311850 |
| System Name | CATHLAMET WATER DEPT |
| System Type | Community Water System |
| Water Source | Surface 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 | Cathlamet |
| ZIP Code | 98612 |
| Address | PO Box 248 |
| Organization | CATHLAMET WATER DEPT |
| Phone | — |
Population & Service
| Population Served | 1,636 |
| Service Connections | 739 |
Drinking Water Violations (441)
This water system has 441 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2025 | Sep 30, 2025 | Surface Water Treatment Rule | MR | No | Yes | — | — | — | Resolved | Sep 30, 2025 | Surface Water Treatment Rule |
| Sep 1, 2025 | Sep 30, 2025 | Surface Water Treatment Rule | MR | No | Yes | — | — | — | Resolved | Sep 30, 2025 | Surface Water Treatment Rule |
| Jul 1, 2025 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Sep 25, 2025 | Consumer Confidence Rule |
| Jul 1, 2024 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Feb 19, 2025 | Consumer Confidence Rule |
| Jul 1, 2022 | Jul 31, 2022 | Surface Water Treatment Rule | MR | No | Yes | — | — | — | Resolved | Jul 31, 2022 | Surface Water Treatment Rule |
| Jul 1, 2022 | Jul 31, 2022 | Surface Water Treatment Rule | MR | No | Yes | — | — | — | Resolved | Jul 31, 2022 | Surface Water Treatment Rule |
| Jan 1, 2008 | Dec 31, 2008 | trans-1,2-Dichloroethylene | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2008 | Volatile Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Antimony, Total | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Ethylbenzene | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Dec 31, 2008 | Volatile Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | CYANIDE | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Chromium | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Fluoride | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Nickel | MR | No | Yes | — | — | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | CYANIDE | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Cadmium | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Selenium | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Selenium | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Nickel | MR | No | Yes | — | — | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Beryllium, Total | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Carbon tetrachloride | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2008 | Volatile Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Fluoride | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Fluoride | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Styrene | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2008 | Volatile Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Tetrachloroethylene | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2008 | Volatile Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | 1,1-Dichloroethylene | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Dec 31, 2008 | Volatile Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | 1,2-Dichloroethane | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2008 | Volatile Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Cadmium | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Chromium | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | 1,1,1-Trichloroethane | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2008 | Volatile Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Nickel | MR | No | Yes | — | — | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Antimony, Total | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | CYANIDE | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Beryllium, Total | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Beryllium, Total | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Arsenic | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Dec 31, 2008 | Arsenic Rule |
| Jan 1, 2008 | Dec 31, 2008 | cis-1,2-Dichloroethylene | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Dec 31, 2008 | Volatile Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Antimony, Total | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | o-Dichlorobenzene | MR | No | Yes | — | 0.6 mg/L | — | Resolved | Dec 31, 2008 | Volatile Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Nickel | MR | No | Yes | — | — | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | 1,1,2-Trichloroethane | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2008 | Volatile Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Chromium | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Fluoride | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Arsenic | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Dec 31, 2008 | Arsenic Rule |
| Jan 1, 2008 | Dec 31, 2008 | Selenium | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Selenium | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Chromium | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Antimony, Total | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | DICHLOROMETHANE | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2008 | Volatile Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | CHLOROBENZENE | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 2008 | Volatile Organic Chemicals |
| Jan 1, 2008 | Dec 31, 2008 | Cadmium | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Dec 31, 2008 | Inorganic Chemicals |
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.