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 | Nov 25, 2025 |
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 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Oct 17, 2025 | Lead and Copper Rule |
| Oct 1, 2024 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Oct 17, 2025 | Lead and Copper Rule |
| Nov 1, 1999 | Nov 30, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Nov 30, 1999 | Total Coliform Rule |
| Nov 1, 1999 | Nov 30, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Nov 30, 1999 | Total Coliform Rule |
| Nov 1, 1999 | Nov 30, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Nov 30, 1999 | Total Coliform Rule |
| Nov 1, 1999 | Nov 30, 1999 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Nov 30, 1999 | Total Coliform Rule |
| May 1, 1996 | May 31, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | May 31, 1996 | Total Coliform Rule |
| May 1, 1996 | May 31, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | May 31, 1996 | Total Coliform Rule |
| May 1, 1996 | May 31, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | May 31, 1996 | Total Coliform Rule |
| Apr 1, 1996 | Apr 30, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Apr 30, 1996 | Total Coliform Rule |
| Apr 1, 1996 | Apr 30, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Apr 30, 1996 | Total Coliform Rule |
| Apr 1, 1996 | Apr 30, 1996 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Apr 30, 1996 | Total Coliform Rule |
| Apr 1, 1993 | Apr 30, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Apr 30, 1993 | Total Coliform Rule |
| Apr 1, 1993 | Apr 30, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Apr 30, 1993 | Total Coliform Rule |
| Apr 1, 1993 | Apr 30, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Apr 30, 1993 | Total Coliform Rule |
| Apr 1, 1991 | Apr 30, 1991 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Apr 30, 1991 | Total Coliform Rule |
| Apr 1, 1991 | Apr 30, 1991 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Apr 30, 1991 | Total Coliform Rule |
| Apr 1, 1991 | Apr 30, 1991 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Apr 30, 1991 | Total Coliform Rule |
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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.