WILSONVILLE, CITY OF
Oregon - Community Water System - PWSID: OR4100954
System Information
| PWSID | OR4100954 |
| System Name | WILSONVILLE, CITY OF |
| System Type | Community Water System |
| Water Source | Surface 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 | WILSONVILLE |
| ZIP Code | 97070 |
| Address | 29799 SW TOWN CENTER LOOP E |
| Organization | WILSONVILLE, CITY OF |
| Phone | 503-570-1542 |
Population & Service
| Population Served | 25,915 |
| Service Connections | 7,187 |
Drinking Water Violations (44)
This water system has 44 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 | Sep 23, 2025 | - | |
| May 1, 2018 | May 31, 2018 | MON | No | Yes | - | - | - | Resolved | May 31, 2018 | - | |
| May 1, 2018 | May 31, 2018 | MR | No | Yes | - | - | - | Resolved | May 31, 2018 | - | |
| May 1, 2018 | May 31, 2018 | MR | No | Yes | - | - | - | Resolved | May 31, 2018 | - | |
| May 1, 2018 | May 31, 2018 | MR | No | Yes | - | - | - | Resolved | May 31, 2018 | - | |
| Mar 1, 2017 | Mar 31, 2017 | MON | No | No | - | - | - | Resolved | Mar 31, 2017 | - | |
| Apr 1, 2016 | Jun 30, 2016 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Jun 30, 2016 | - | |
| Apr 1, 2016 | Jun 30, 2016 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Jun 30, 2016 | - | |
| Dec 23, 2013 | - | Other | No | No | - | - | - | Resolved | Jan 8, 2014 | - | |
| Oct 1, 2013 | Oct 31, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2013 | - | |
| Oct 1, 2013 | Oct 31, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 2013 | - | |
| Sep 1, 2013 | Sep 30, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2013 | - | |
| Sep 1, 2013 | Sep 30, 2013 | MR | No | Yes | - | - | - | Resolved | Sep 30, 2013 | - | |
| Sep 1, 2013 | Sep 30, 2013 | MR | No | Yes | - | - | - | Resolved | Sep 30, 2013 | - | |
| Sep 1, 2013 | Sep 30, 2013 | MR | No | Yes | - | - | - | Resolved | Sep 30, 2013 | - | |
| Nov 1, 2008 | Nov 30, 2008 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2008 | - | |
| May 1, 2007 | Jun 30, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2007 | - | |
| May 1, 2007 | Jun 30, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Jun 30, 2007 | - | |
| Sep 1, 2006 | Sep 30, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2006 | - | |
| Sep 1, 2006 | Sep 30, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2006 | - | |
| Aug 1, 2006 | Aug 31, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2006 | - | |
| Aug 1, 2006 | Aug 31, 2006 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 2006 | - | |
| 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 | - | |
| Oct 1, 1995 | Oct 31, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 1995 | - | |
| Oct 1, 1995 | Oct 31, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Oct 31, 1995 | - | |
| Feb 1, 1995 | Feb 28, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 1995 | - | |
| Feb 1, 1995 | Feb 28, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 1995 | - | |
| Feb 1, 1995 | Feb 28, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 1995 | - | |
| Feb 1, 1995 | Feb 28, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 1995 | - | |
| Feb 1, 1995 | Feb 28, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 1995 | - | |
| Feb 1, 1995 | Feb 28, 1995 | MCL | Yes | No | - | 5% of samples | - | Resolved | Feb 28, 1995 | - | |
| Jun 1, 1994 | Jun 30, 1994 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 1994 | - | |
| Jun 1, 1994 | Jun 30, 1994 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 1994 | - | |
| May 1, 1994 | May 31, 1994 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 1994 | - | |
| May 1, 1994 | May 31, 1994 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 1994 | - | |
| May 1, 1994 | May 31, 1994 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 1994 | - | |
| May 1, 1994 | May 31, 1994 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 1994 | - | |
| Mar 1, 1994 | Mar 31, 1994 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 1994 | - | |
| Mar 1, 1994 | Mar 31, 1994 | MCL | Yes | No | - | 5% of samples | - | Resolved | Mar 31, 1994 | - | |
| May 1, 1993 | May 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | May 31, 1993 | - | |
| Jun 1, 1976 | May 31, 1980 | MR | No | No | - | 15 pCi/L | - | Archived | May 31, 1980 | - | |
| Jun 1, 1976 | May 31, 1980 | MR | No | No | - | 5 pCi/L | - | Archived | May 31, 1980 | - | |
| - | - | - | 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.