METHOW WATER SYSTEM INC
Washington - Community Water System - PWSID: WA5354370
System Information
| PWSID | WA5354370 |
| System Name | METHOW WATER SYSTEM INC |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 7, 1981 |
| Last Reported | Mar 26, 2026 |
Location & Contact
| State | Washington |
| City | METHOW |
| ZIP Code | 98834 |
| Address | PO BOX 538 |
| Organization | METHOW WATER SYSTEM INC |
| Phone | - |
Population & Service
| Population Served | 45 |
| Service Connections | 27 |
Drinking Water Violations (73)
This water system has 73 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 | MON | No | Yes | - | - | - | Resolved | Nov 30, 2022 | - | |
| Oct 1, 2022 | Oct 31, 2022 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2022 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 1 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.007 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.075 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.6 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.7 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Oct 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2000 | Jan 1, 2001 | MR | No | No | - | TT | - | Archived | Jan 1, 2001 | - | |
| Aug 1, 1999 | Aug 31, 1999 | MCL | Yes | No | - | 5% of samples | - | Archived | Aug 31, 1999 | - | |
| Aug 1, 1999 | Aug 31, 1999 | MCL | Yes | No | - | 5% of samples | - | Archived | Aug 31, 1999 | - | |
| Aug 1, 1999 | Aug 31, 1999 | MCL | Yes | No | - | 5% of samples | - | Archived | Aug 31, 1999 | - | |
| Oct 1, 1998 | Oct 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 1998 | - | |
| Oct 1, 1998 | Oct 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 1998 | - | |
| Oct 1, 1998 | Oct 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 1998 | - | |
| Jul 1, 1998 | Jul 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Jul 31, 1998 | - | |
| Jul 1, 1998 | Jul 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Jul 31, 1998 | - | |
| Jul 1, 1998 | Jul 31, 1998 | MCL | Yes | No | - | 5% of samples | - | Archived | Jul 31, 1998 | - | |
| Dec 1, 1997 | Dec 31, 1997 | MCL | Yes | No | - | 5% of samples | - | Archived | Dec 31, 1997 | - | |
| Dec 1, 1997 | Dec 31, 1997 | MCL | Yes | No | - | 5% of samples | - | Archived | Dec 31, 1997 | - | |
| Dec 1, 1997 | Dec 31, 1997 | MCL | Yes | No | - | 5% of samples | - | Archived | Dec 31, 1997 | - | |
| Jul 1, 1997 | Jul 31, 1997 | MCL | Yes | No | - | 5% of samples | - | Archived | Jul 31, 1997 | - | |
| Jul 1, 1997 | Jul 31, 1997 | MCL | Yes | No | - | 5% of samples | - | Archived | Jul 31, 1997 | - | |
| Jul 1, 1997 | Jul 31, 1997 | MCL | Yes | No | - | 5% of samples | - | Archived | Jul 31, 1997 | - | |
| Nov 1, 1996 | Nov 30, 1996 | MR | No | Yes | - | 5% of samples | - | Archived | Nov 30, 1996 | - | |
| Apr 1, 1996 | Apr 30, 1996 | MR | No | Yes | - | 5% of samples | - | Archived | Apr 30, 1996 | - | |
| Dec 1, 1995 | Dec 31, 1995 | MCL | Yes | No | - | 5% of samples | - | Archived | Dec 31, 1995 | - | |
| Nov 1, 1995 | Nov 30, 1995 | MCL | Yes | No | - | 5% of samples | - | Archived | Nov 30, 1995 | - | |
| Jul 1, 1995 | Jul 31, 1995 | MR | No | Yes | - | 5% of samples | - | Archived | Jul 31, 1995 | - | |
| Oct 19, 1994 | Nov 18, 1994 | MR | No | Yes | - | 5% of samples | - | Archived | Nov 18, 1994 | - | |
| Jan 1, 1993 | Jan 31, 1993 | MR | No | Yes | - | 5% of samples | - | Archived | Jan 31, 1993 | - | |
| Aug 1, 1992 | Aug 31, 1992 | MR | No | Yes | - | 5% of samples | - | Archived | Aug 31, 1992 | - | |
| Jul 1, 1992 | Jul 31, 1992 | MR | No | No | - | 5% of samples | - | Archived | Jul 31, 1992 | - | |
| May 1, 1992 | May 31, 1992 | MR | No | No | - | 5% of samples | - | Archived | May 31, 1992 | - | |
| Apr 1, 1992 | Apr 30, 1992 | MCL | Yes | No | - | 5% of samples | - | Archived | Apr 30, 1992 | - | |
| Apr 1, 1992 | Apr 30, 1992 | MR | No | No | - | 5% of samples | - | Archived | Apr 30, 1992 | - |
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.