Heron Lake
Minnesota — Community Water System — PWSID: MN1320002
System Information
| PWSID | MN1320002 |
| System Name | Heron Lake |
| System Type | Community Water System |
| Water Source | Ground Water Purchased |
| 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 | Heron Lake |
| ZIP Code | 56137-0315 |
| Address | P.O. Box 315 |
| Organization | Heron Lake City Council |
| Phone | 5077932826 |
Population & Service
| Population Served | 691 |
| Service Connections | 296 |
Drinking Water Violations (24)
This water system has 24 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 2, 2025 | — | RPT | No | No | — | — | — | Resolved | Feb 4, 2026 | — | |
| Jul 2, 2025 | — | RPT | No | No | — | — | — | Resolved | Feb 4, 2026 | — | |
| Jul 2, 2025 | — | RPT | No | No | — | — | — | Resolved | Feb 4, 2026 | — | |
| Oct 1, 2024 | — | MR | No | No | — | TT | — | Resolved | Aug 6, 2025 | — | |
| Oct 1, 2024 | — | MR | No | No | — | TT | — | Resolved | Aug 6, 2025 | — | |
| Jan 1, 1994 | — | MR | No | No | — | TT | — | Resolved | Mar 1, 1995 | — | |
| Jan 1, 1994 | — | MR | No | No | — | TT | — | Resolved | Mar 1, 1995 | — | |
| Jan 1, 1994 | — | MR | No | No | — | TT | — | Resolved | Mar 1, 1995 | — | |
| Jan 1, 1994 | — | MR | No | No | — | TT | — | Resolved | Mar 1, 1995 | — | |
| Oct 1, 1988 | Sep 30, 1992 | MCL | Yes | No | 11.7 | 5 pCi/L | — | Resolved | Jan 1, 1991 | — | |
| Oct 1, 1988 | Sep 30, 1992 | MCL | Yes | No | 11.7 | 5 pCi/L | — | Resolved | Jan 1, 1991 | — | |
| Oct 1, 1988 | Sep 30, 1992 | MCL | Yes | No | 11.7 | 5 pCi/L | — | Resolved | Jan 1, 1991 | — | |
| Oct 1, 1988 | Sep 30, 1992 | MCL | Yes | No | 11.7 | 5 pCi/L | — | Resolved | Jan 1, 1991 | — | |
| Oct 1, 1988 | Sep 30, 1992 | MCL | Yes | No | 11.7 | 5 pCi/L | — | Resolved | Jan 1, 1991 | — | |
| Oct 1, 1988 | Sep 30, 1992 | MCL | Yes | No | 11.7 | 5 pCi/L | — | Resolved | Jan 1, 1991 | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
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| — | — | — | 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.