Watertown
Minnesota - Community Water System - PWSID: MN1100012
System Information
| PWSID | MN1100012 |
| System Name | Watertown |
| 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 | Feb 25, 2026 |
Location & Contact
| State | Minnesota |
| City | Watertown |
| ZIP Code | 55388-0279 |
| Address | Watertown City Hall |
| Organization | Watertown City Council |
| Phone | 9529552681 |
Population & Service
| Population Served | 4,550 |
| Service Connections | 1,616 |
Drinking Water Violations (25)
This water system has 25 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Oct 17, 2025 | - | |
| Oct 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Oct 17, 2025 | - | |
| Nov 1, 1999 | Nov 30, 1999 | MR | No | No | - | 5% of samples | - | Archived | Nov 30, 1999 | - | |
| Nov 1, 1999 | Nov 30, 1999 | MR | No | No | - | 5% of samples | - | Archived | Nov 30, 1999 | - | |
| Nov 1, 1999 | Nov 30, 1999 | MR | No | No | - | 5% of samples | - | Archived | Nov 30, 1999 | - | |
| Nov 1, 1999 | Nov 30, 1999 | MR | No | No | - | 5% of samples | - | Archived | Nov 30, 1999 | - | |
| May 1, 1996 | May 31, 1996 | MR | No | No | - | 5% of samples | - | Archived | May 31, 1996 | - | |
| May 1, 1996 | May 31, 1996 | MR | No | No | - | 5% of samples | - | Archived | May 31, 1996 | - | |
| May 1, 1996 | May 31, 1996 | MR | No | No | - | 5% of samples | - | Archived | May 31, 1996 | - | |
| Apr 1, 1996 | Apr 30, 1996 | MR | No | No | - | 5% of samples | - | Archived | Apr 30, 1996 | - | |
| Apr 1, 1996 | Apr 30, 1996 | MR | No | No | - | 5% of samples | - | Archived | Apr 30, 1996 | - | |
| Apr 1, 1996 | Apr 30, 1996 | MR | No | No | - | 5% of samples | - | Archived | Apr 30, 1996 | - | |
| Apr 1, 1993 | Apr 30, 1993 | MR | No | No | - | 5% of samples | - | Archived | Apr 30, 1993 | - | |
| Apr 1, 1993 | Apr 30, 1993 | MR | No | No | - | 5% of samples | - | Archived | Apr 30, 1993 | - | |
| Apr 1, 1993 | Apr 30, 1993 | MR | No | No | - | 5% of samples | - | Archived | Apr 30, 1993 | - | |
| Apr 1, 1991 | Apr 30, 1991 | MR | No | No | - | 5% of samples | - | Archived | Apr 30, 1991 | - | |
| Apr 1, 1991 | Apr 30, 1991 | MR | No | No | - | 5% of samples | - | Archived | Apr 30, 1991 | - | |
| Apr 1, 1991 | Apr 30, 1991 | MR | No | No | - | 5% of samples | - | Archived | Apr 30, 1991 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | 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.