Ada
Minnesota — Community Water System — PWSID: MN1540001
System Information
| PWSID | MN1540001 |
| System Name | Ada |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 24, 1981 |
| Last Reported | Nov 25, 2025 |
Location & Contact
| State | Minnesota |
| City | Ada |
| ZIP Code | 56510 |
| Address | 15 East Fourth Avenue |
| Organization | Ada City Council |
| Phone | 2187845520 |
Population & Service
| Population Served | 1,725 |
| Service Connections | 839 |
Drinking Water Violations (30)
This water system has 30 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, 2019 | Dec 31, 2019 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2019 | Lead and Copper Rule |
| Jul 1, 2019 | Dec 31, 2019 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2019 | Lead and Copper Rule |
| Jul 1, 2019 | Dec 31, 2019 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2019 | Lead and Copper Rule |
| Jul 1, 2019 | Dec 31, 2019 | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Dec 31, 2019 | Lead and Copper Rule |
| Mar 1, 2009 | Mar 31, 2009 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2009 | Total Coliform Rule |
| Mar 1, 2009 | Mar 31, 2009 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2009 | Total Coliform Rule |
| Mar 1, 2009 | Mar 31, 2009 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2009 | Total Coliform Rule |
| Mar 1, 2009 | Mar 31, 2009 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2009 | Total Coliform Rule |
| Jan 1, 2009 | Mar 31, 2009 | Chlorine | MR | No | No | — | 4.0 mg/L | — | Resolved | Mar 31, 2009 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2009 | Mar 31, 2009 | Chlorine | MR | No | No | — | 4.0 mg/L | — | Resolved | Mar 31, 2009 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2009 | Mar 31, 2009 | Chlorine | MR | No | No | — | 4.0 mg/L | — | Resolved | Mar 31, 2009 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Jan 1, 2009 | Mar 31, 2009 | Chlorine | MR | No | No | — | 4.0 mg/L | — | Resolved | Mar 31, 2009 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2007 | Oct 31, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2007 | Total Coliform Rule |
| Oct 1, 2007 | Oct 31, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2007 | Total Coliform Rule |
| Oct 1, 2007 | Oct 31, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2007 | Total Coliform Rule |
| Oct 1, 2007 | Oct 31, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2007 | Total Coliform Rule |
| Sep 1, 2007 | Sep 30, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2007 | Total Coliform Rule |
| Sep 1, 2007 | Sep 30, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2007 | Total Coliform Rule |
| Sep 1, 2007 | Sep 30, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2007 | Total Coliform Rule |
| Sep 1, 2007 | Sep 30, 2007 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2007 | Total Coliform Rule |
| Aug 1, 2004 | Aug 31, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 2004 | Total Coliform Rule |
| Aug 1, 2004 | Aug 31, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 2004 | Total Coliform Rule |
| Aug 1, 2004 | Aug 31, 2004 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 2004 | Total Coliform Rule |
| Mar 1, 1998 | Mar 31, 1998 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Mar 31, 1998 | Total Coliform Rule |
| Mar 1, 1998 | Mar 31, 1998 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Mar 31, 1998 | Total Coliform Rule |
| Mar 1, 1998 | Mar 31, 1998 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Mar 31, 1998 | Total Coliform Rule |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | 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.