WASHINGTON COUNTY PWSD 1
Missouri - Community Water System - PWSID: MO6024633
System Information
| PWSID | MO6024633 |
| System Name | WASHINGTON COUNTY PWSD 1 |
| System Type | Community Water System |
| Water Source | Ground Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 07 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 23, 1990 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | Missouri |
| City | POTOSI |
| ZIP Code | 63664-0000 |
| Address | 10098 SUMMERLINE RD |
| Organization | BENSON, TAMMY |
| Phone | 573-760-2655 |
Population & Service
| Population Served | 503 |
| Service Connections | 210 |
Drinking Water Violations (202)
This water system has 202 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 | Nov 25, 2025 | - | |
| Jul 1, 2025 | - | Other | No | No | - | - | - | Resolved | Nov 25, 2025 | - | |
| Jul 1, 2021 | - | Other | No | No | - | - | - | Resolved | Dec 6, 2021 | - | |
| Jun 14, 2015 | - | Other | No | No | - | - | - | Resolved | Mar 14, 2024 | - | |
| Apr 1, 2015 | Apr 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2015 | - | |
| Apr 1, 2015 | Apr 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2015 | - | |
| Apr 1, 2015 | Apr 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2015 | - | |
| Apr 1, 2015 | Apr 30, 2015 | MCL | Yes | No | - | 5% of samples | - | Resolved | Apr 30, 2015 | - | |
| Jul 1, 2012 | - | Other | No | No | - | - | - | Resolved | Oct 25, 2013 | - | |
| Jan 28, 2011 | - | Other | No | No | - | - | - | Resolved | Oct 3, 2011 | - | |
| Jan 28, 2011 | - | Other | No | No | - | - | - | Resolved | Oct 3, 2011 | - | |
| Jan 28, 2011 | - | Other | No | No | - | - | - | Resolved | Oct 3, 2011 | - | |
| Jan 28, 2011 | - | Other | No | No | - | - | - | Resolved | Oct 3, 2011 | - | |
| Sep 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Sep 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Sep 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Sep 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Sep 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Sep 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Sep 1, 2010 | Sep 30, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 2010 | - | |
| Aug 1, 2010 | Aug 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2010 | - | |
| Aug 1, 2010 | Aug 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2010 | - | |
| Aug 1, 2010 | Aug 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2010 | - | |
| Aug 1, 2010 | Aug 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2010 | - | |
| Aug 1, 2010 | Aug 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2010 | - | |
| Aug 1, 2010 | Aug 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2010 | - | |
| Aug 1, 2010 | Aug 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2010 | - | |
| Aug 1, 2010 | Aug 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Aug 31, 2010 | - | |
| Jul 1, 2010 | - | Other | No | No | - | - | - | Resolved | Oct 3, 2011 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Jul 1, 2010 | - | Other | No | No | - | - | - | Resolved | Oct 3, 2011 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Jul 1, 2010 | - | Other | No | No | - | - | - | Resolved | Oct 3, 2011 | - | |
| Jun 1, 2010 | Jun 30, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2010 | - | |
| Jun 1, 2010 | Jun 30, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2010 | - | |
| Jun 1, 2010 | Jun 30, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2010 | - | |
| Jun 1, 2010 | Jun 30, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2010 | - | |
| Jun 1, 2010 | Jun 30, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2010 | - | |
| Jun 1, 2010 | Jun 30, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2010 | - | |
| Jun 1, 2010 | Jun 30, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2010 | - | |
| Jun 1, 2010 | Jun 30, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jun 30, 2010 | - | |
| Jan 1, 2010 | Jan 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 2010 | - | |
| Jan 1, 2010 | Jan 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 2010 | - | |
| Jan 1, 2010 | Jan 31, 2010 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jan 31, 2010 | - |
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.