Maxwelton Water System
Washington - Non-Transient Non-Community - PWSID: WA5310811
System Information
| PWSID | WA5310811 |
| System Name | Maxwelton Water System |
| System Type | Non-Transient Non-Community |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 10 |
| Serves School | Yes |
| Wholesaler | No |
| First Reported | May 26, 1982 |
| Last Reported | Jun 19, 2026 |
Location & Contact
| State | Washington |
| City | Mt Vernon |
| ZIP Code | 98273 |
| Address | 14263 Calhoun Rd |
| Organization | Maxwelton Water System |
| Phone | - |
Population & Service
| Population Served | 1,700 |
| Service Connections | 5 |
Drinking Water Violations (39)
This water system has 39 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb 1, 2026 | Feb 28, 2026 | MON | No | Yes | - | - | - | Resolved | Feb 28, 2026 | - | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Dec 31, 2024 | - | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2024 | - | |
| Jan 1, 2024 | Dec 31, 2024 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2024 | - | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2022 | - | |
| Jan 1, 2016 | Dec 31, 2016 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2016 | - | |
| Jan 1, 2016 | Dec 31, 2016 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Dec 31, 2016 | - | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Jan 1, 2014 | Dec 31, 2014 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Dec 31, 2014 | - | |
| Jan 1, 2011 | - | MR | No | No | - | TT | - | Resolved | Sep 27, 2012 | - | |
| Sep 1, 2004 | Sep 30, 2004 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 2004 | - | |
| Jan 1, 2004 | - | MR | No | No | - | TT | - | Resolved | May 13, 2009 | - | |
| Jan 1, 2004 | - | MR | No | No | - | TT | - | Resolved | May 13, 2009 | - | |
| Jan 1, 2004 | - | MR | No | No | - | TT | - | Resolved | May 13, 2009 | - | |
| Jan 1, 2004 | - | MR | No | No | - | TT | - | Resolved | May 13, 2009 | - | |
| Jan 1, 2004 | - | MR | No | No | - | TT | - | Resolved | May 13, 2009 | - | |
| Jan 1, 2004 | - | MR | No | No | - | TT | - | Resolved | May 13, 2009 | - | |
| Jan 1, 2003 | - | MR | No | No | - | TT | - | Resolved | May 13, 2009 | - | |
| Jan 1, 2003 | - | MR | No | No | - | TT | - | Resolved | May 13, 2009 | - | |
| Jan 1, 2003 | - | MR | No | No | - | TT | - | Resolved | May 13, 2009 | - | |
| Jan 1, 2003 | - | MR | No | No | - | TT | - | Resolved | May 13, 2009 | - | |
| Jan 1, 2003 | - | MR | No | No | - | TT | - | Resolved | May 13, 2009 | - | |
| Jan 1, 2003 | - | MR | No | No | - | TT | - | Resolved | May 13, 2009 | - | |
| Jan 1, 2003 | - | MR | No | No | - | TT | - | Resolved | May 13, 2009 | - | |
| Jan 1, 2000 | Jan 1, 2001 | MR | No | No | - | TT | - | Archived | Jan 1, 2001 | - | |
| Nov 1, 1996 | Nov 30, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Nov 30, 1996 | - | |
| Nov 1, 1996 | Nov 30, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Nov 30, 1996 | - | |
| Nov 1, 1996 | Nov 30, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Nov 30, 1996 | - | |
| Oct 1, 1996 | Oct 31, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 1996 | - | |
| Oct 1, 1996 | Oct 31, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 1996 | - | |
| Oct 1, 1996 | Oct 31, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Oct 31, 1996 | - | |
| Sep 1, 1996 | Sep 30, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 1996 | - | |
| Jun 1, 1996 | Jun 30, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Jun 30, 1996 | - | |
| May 1, 1995 | May 31, 1995 | MCL | Yes | No | - | 5% of samples | - | Archived | May 31, 1995 | - | |
| Oct 19, 1994 | Nov 18, 1994 | MR | No | Yes | - | 5% of samples | - | Archived | Nov 18, 1994 | - | |
| Sep 1, 1993 | Sep 30, 1993 | MCL | Yes | No | - | 5% of samples | - | Archived | Sep 30, 1993 | - | |
| Feb 1, 1992 | Feb 29, 1992 | MR | No | No | - | 5% of samples | - | Archived | Feb 29, 1992 | - | |
| - | - | - | 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.