WALLOWA, CITY OF
Oregon - Community Water System - PWSID: OR4100930
System Information
| PWSID | OR4100930 |
| System Name | WALLOWA, CITY OF |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 12, 1979 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | Oregon |
| City | WALLOWA |
| ZIP Code | 97885 |
| Address | PO BOX 487 |
| Organization | WALLOWA, CITY OF |
| Phone | 541-886-2422 |
Population & Service
| Population Served | 840 |
| Service Connections | 468 |
Drinking Water Violations (47)
This water system has 47 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, 2025 | - | Other | No | No | - | - | - | Resolved | Aug 27, 2025 | - | |
| Jul 1, 2024 | - | Other | No | No | - | - | - | Resolved | Jul 30, 2024 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Jul 14, 2023 | - | |
| Jan 1, 2021 | Dec 31, 2021 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2021 | - | |
| Feb 1, 2020 | Feb 29, 2020 | MON | No | Yes | - | - | - | Resolved | Feb 29, 2020 | - | |
| Jan 1, 2020 | Jan 31, 2020 | MON | No | Yes | - | - | - | Resolved | Jan 31, 2020 | - | |
| Jan 1, 2017 | Dec 31, 2019 | MR | No | Yes | - | 1 mg/L | - | Resolved | Dec 31, 2019 | - | |
| Aug 1, 2016 | Aug 31, 2016 | MON | No | Yes | - | - | - | Resolved | Aug 31, 2016 | - | |
| Jul 1, 2015 | Jul 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2015 | - | |
| Jul 1, 2015 | Jul 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2015 | - | |
| Jul 1, 2015 | Jul 31, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2015 | - | |
| Jan 1, 2008 | Dec 31, 2008 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2008 | - | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2006 | - | |
| Oct 19, 2004 | - | Other | No | No | - | - | - | Resolved | Apr 22, 2010 | - | |
| Jul 1, 2004 | - | Other | No | No | - | - | - | Resolved | Apr 22, 2010 | - | |
| Jan 1, 2004 | - | MR | No | No | - | TT | - | Resolved | Sep 6, 2011 | - | |
| Oct 19, 2003 | - | Other | No | No | - | - | - | Resolved | Feb 27, 2004 | - | |
| Jul 1, 2003 | - | Other | No | No | - | - | - | Resolved | Apr 22, 2010 | - | |
| Jan 1, 2003 | - | MR | No | No | - | TT | - | Resolved | Sep 6, 2011 | - | |
| Oct 19, 2002 | - | Other | No | No | - | - | - | Resolved | Mar 24, 2003 | - | |
| Oct 19, 2001 | - | Other | No | No | - | - | - | Resolved | Mar 24, 2003 | - | |
| Sep 16, 2001 | - | MR | No | No | - | TT | - | Resolved | Sep 6, 2011 | - | |
| Jul 1, 2001 | - | Other | No | No | - | - | - | Resolved | Jun 24, 2002 | - | |
| Oct 1, 2000 | - | Other | No | No | - | - | - | Resolved | Mar 24, 2003 | - | |
| Oct 19, 1999 | - | Other | No | No | - | - | - | Resolved | Aug 28, 2000 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1997 | Dec 31, 1997 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1997 | - | |
| Jan 1, 1996 | Dec 31, 1999 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 1999 | - | |
| Jan 1, 1996 | Dec 31, 1999 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 1999 | - | |
| Oct 1, 1994 | Oct 31, 1994 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1994 | - | |
| Sep 1, 1994 | Sep 30, 1994 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 1994 | - | |
| Aug 1, 1994 | Aug 31, 1994 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 1994 | - | |
| Jul 1, 1994 | - | MR | No | No | - | TT | - | Resolved | Sep 6, 2011 | - | |
| Jul 1, 1994 | Jul 31, 1994 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 1994 | - | |
| Jul 1, 1994 | - | MR | No | No | - | TT | - | Resolved | Sep 6, 2011 | - | |
| Jan 1, 1994 | - | MR | No | No | - | TT | - | Resolved | Sep 6, 2011 | - | |
| Jan 1, 1994 | - | MR | No | No | - | TT | - | Resolved | Sep 6, 2011 | - | |
| Nov 1, 1993 | Nov 30, 1993 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 1993 | - | |
| Oct 1, 1993 | Oct 31, 1993 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1993 | - | |
| Nov 1, 1991 | Nov 30, 1991 | MR | No | Yes | - | 5% of samples | - | Archived | Nov 30, 1991 | - | |
| Nov 1, 1991 | Nov 30, 1991 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 1991 | - | |
| Jun 1, 1976 | May 31, 1980 | MR | No | No | - | 5 pCi/L | - | Archived | May 31, 1980 | - | |
| Jun 1, 1976 | May 31, 1980 | MR | No | No | - | 15 pCi/L | - | Archived | May 31, 1980 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | 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.