SENECA, CITY OF
Oregon - Community Water System - PWSID: OR4100807
System Information
| PWSID | OR4100807 |
| System Name | SENECA, 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 | SENECA |
| ZIP Code | 97873 |
| Address | PO BOX 208 |
| Organization | SENECA, CITY OF |
| Phone | 541-542-2161 |
Population & Service
| Population Served | 200 |
| Service Connections | 112 |
Drinking Water Violations (61)
This water system has 61 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2025 | Oct 31, 2025 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2025 | - | |
| Jul 1, 2024 | - | Other | No | No | - | - | - | Resolved | Apr 28, 2025 | - | |
| Oct 1, 2023 | - | Other | No | No | - | - | - | Resolved | Oct 26, 2023 | - | |
| Oct 1, 2023 | - | MR | No | No | - | TT | - | Resolved | Jul 31, 2025 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Apr 28, 2025 | - | |
| Sep 1, 2022 | Sep 30, 2022 | MON | No | Yes | - | - | - | Resolved | Sep 30, 2022 | - | |
| Sep 1, 2019 | Sep 30, 2019 | MON | No | Yes | - | - | - | Resolved | Sep 30, 2019 | - | |
| Apr 1, 2019 | Apr 30, 2019 | MON | No | Yes | - | - | - | Resolved | Apr 30, 2019 | - | |
| Jan 1, 2019 | Jan 31, 2019 | MON | No | Yes | - | - | - | Resolved | Jan 31, 2019 | - | |
| Dec 17, 2018 | - | MR | No | Yes | - | - | - | Resolved | Dec 17, 2018 | - | |
| Sep 1, 2018 | Sep 30, 2018 | MON | No | Yes | - | - | - | Resolved | Sep 30, 2018 | - | |
| Jan 1, 2018 | Dec 31, 2018 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2018 | - | |
| Dec 3, 2017 | - | MR | No | Yes | - | - | - | Resolved | Feb 1, 2018 | - | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2006 | - | |
| Oct 1, 2005 | Oct 31, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2005 | - | |
| Dec 1, 2004 | Dec 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2004 | - | |
| Aug 1, 2004 | Aug 31, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2004 | - | |
| Jan 1, 2003 | Dec 31, 2003 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2003 | - | |
| Jan 1, 2002 | Dec 31, 2002 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2002 | - | |
| Jan 1, 2002 | Dec 31, 2002 | MR | No | Yes | - | 10 mg/L | - | Resolved | Aug 21, 2002 | - | |
| Dec 1, 2001 | Dec 31, 2001 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2001 | - | |
| Oct 1, 2000 | - | Other | No | No | - | - | - | Resolved | Aug 1, 2001 | - | |
| Jan 1, 2000 | Dec 31, 2000 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2000 | - | |
| Jan 1, 2000 | Dec 31, 2000 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2000 | - | |
| Sep 1, 1999 | Sep 30, 1999 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 1999 | - | |
| Jan 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Jan 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Jan 1, 1999 | Dec 31, 1999 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1999 | - | |
| Apr 1, 1998 | Apr 30, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 1998 | - | |
| Mar 1, 1998 | Mar 31, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 1998 | - | |
| Feb 1, 1998 | Feb 28, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 1998 | - | |
| Feb 1, 1998 | Feb 28, 1998 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 1998 | - | |
| Feb 1, 1998 | Feb 28, 1998 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 1998 | - | |
| Feb 1, 1998 | Feb 28, 1998 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 1998 | - | |
| Jan 1, 1998 | Dec 31, 1998 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1998 | - | |
| Jan 1, 1998 | Dec 31, 1998 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1998 | - | |
| Jan 1, 1998 | Dec 31, 1998 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1998 | - | |
| Nov 1, 1997 | Nov 30, 1997 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 1997 | - | |
| Oct 1, 1997 | Oct 31, 1997 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 1997 | - | |
| Oct 1, 1997 | Oct 31, 1997 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1997 | - | |
| Oct 1, 1997 | Oct 31, 1997 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 1997 | - | |
| Oct 1, 1997 | Oct 31, 1997 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1997 | - | |
| Dec 5, 1996 | - | MR | No | No | - | TT | - | Resolved | Jun 17, 2005 | - | |
| 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 | - | |
| Jan 1, 1996 | Dec 31, 1996 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 1996 | - | |
| Jan 1, 1996 | Dec 31, 1999 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 1999 | - | |
| Feb 1, 1995 | Feb 28, 1995 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 1995 | - | |
| Feb 1, 1995 | Feb 28, 1995 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 1995 | - | |
| Dec 1, 1992 | Dec 31, 1992 | MR | No | Yes | - | 5% of samples | - | Archived | Dec 31, 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.