UPPER SKAGIT
Washington - Community Water System - PWSID: 105300048
System Information
| PWSID | 105300048 |
| System Name | UPPER SKAGIT |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Native American |
| EPA Region | 10 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jun 4, 1984 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | Washington |
| City | SEDRO WOOLLEY |
| ZIP Code | 98284 |
| Address | 25944 COMMUNITY PLAZA WAY |
| Organization | MALONEY, DOREEN |
| Phone | 360-854-7090 |
Population & Service
| Population Served | 365 |
| Service Connections | 98 |
Drinking Water Violations (40)
This water system has 40 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 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Jan 1, 2025 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Jul 1, 2024 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Oct 31, 2023 | - | MR | No | No | - | TT | - | Resolved | Feb 23, 2024 | - | |
| Oct 1, 2018 | Dec 31, 2018 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2018 | - | |
| May 1, 2018 | May 31, 2018 | MON | No | Yes | - | - | - | Resolved | May 31, 2018 | - | |
| Apr 1, 2018 | Jun 30, 2018 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2018 | - | |
| Apr 1, 2017 | Jun 30, 2017 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 2017 | - | |
| Dec 1, 2016 | Dec 31, 2016 | MON | No | Yes | - | - | - | Resolved | Dec 31, 2016 | - | |
| Nov 14, 2016 | - | RPT | No | No | - | - | - | Resolved | Nov 28, 2016 | - | |
| Oct 1, 2016 | Oct 31, 2016 | MON | No | Yes | - | - | - | Resolved | Oct 31, 2016 | - | |
| Oct 1, 2016 | Dec 31, 2016 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2016 | - | |
| Jan 1, 2015 | - | MR | No | No | - | TT | - | Resolved | Dec 15, 2015 | - | |
| Oct 1, 2014 | - | Other | No | No | - | - | - | Resolved | Oct 2, 2014 | - | |
| Sep 1, 2014 | Sep 30, 2014 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2014 | - | |
| Jul 1, 2014 | Sep 30, 2014 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 2014 | - | |
| Jan 1, 2014 | Aug 31, 2014 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 31, 2014 | - | |
| Jan 1, 2014 | Aug 31, 2014 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 31, 2014 | - | |
| Nov 1, 2013 | Nov 30, 2013 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 2013 | - | |
| Oct 1, 2013 | - | MR | No | No | - | TT | - | Resolved | Oct 1, 2014 | - | |
| Oct 1, 2013 | Dec 31, 2013 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Dec 31, 2013 | - | |
| Jan 1, 2011 | Dec 31, 2011 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2011 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Jul 1, 2008 | - | Other | No | No | - | - | - | Resolved | Aug 21, 2008 | - | |
| Jan 1, 2008 | Dec 31, 2010 | MR | No | Yes | - | 7 MFL | - | Resolved | Dec 31, 2010 | - | |
| Jul 1, 2007 | - | Other | No | No | - | - | - | Resolved | Jul 12, 2007 | - | |
| Apr 1, 2007 | Apr 30, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Apr 30, 2007 | - | |
| Mar 1, 2007 | Mar 31, 2007 | MR | No | No | - | 5% of samples | - | Resolved | Mar 31, 2007 | - | |
| Jul 1, 2006 | - | Other | No | No | - | - | - | Resolved | Jul 19, 2006 | - | |
| Jan 1, 2006 | Dec 31, 2006 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2006 | - | |
| Jul 1, 2005 | - | Other | No | No | - | - | - | Resolved | Sep 8, 2005 | - | |
| Jan 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Sep 20, 2007 | - | |
| Sep 1, 2004 | Sep 30, 2004 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jan 1, 2004 | Dec 31, 2004 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Dec 31, 2004 | - | |
| Jun 1, 2001 | Jun 30, 2001 | MR | No | Yes | - | 5% of samples | - | Archived | Jun 30, 2001 | - | |
| Apr 1, 2001 | Mar 31, 2005 | Other | No | No | - | - | - | Resolved | Mar 31, 2005 | - | |
| Jun 1, 1993 | Jun 30, 1993 | MR | No | Yes | - | 5% of samples | - | Archived | Jun 30, 1993 | - | |
| Dec 1, 1992 | Dec 31, 1992 | MR | No | Yes | - | 5% of samples | - | Archived | Dec 31, 1992 | - | |
| Oct 1, 1992 | Oct 31, 1992 | MR | No | Yes | - | 5% of samples | - | Archived | Oct 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.