GRAND PORTAGE
Minnesota - Community Water System - PWSID: 055294101
System Information
| PWSID | 055294101 |
| System Name | GRAND PORTAGE |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Native American |
| EPA Region | 05 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Dec 9, 1983 |
| Last Reported | Jun 30, 2026 |
Location & Contact
| State | Minnesota |
| City | GRAND PORTAGE |
| ZIP Code | 55605 |
| Address | P.O. Box 428 |
| Organization | COOK, VALLEN |
| Phone | 218-475-2020 |
Population & Service
| Population Served | 820 |
| Service Connections | 139 |
Drinking Water Violations (2,036)
This water system has 2,036 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb 1, 2026 | Feb 28, 2026 | MON | No | Yes | - | - | - | Resolved | Feb 28, 2026 | - | |
| Feb 1, 2026 | Feb 28, 2026 | MR | No | Yes | - | - | - | Resolved | Feb 28, 2026 | - | |
| Feb 1, 2026 | Feb 28, 2026 | MR | No | Yes | - | - | - | Resolved | Feb 28, 2026 | - | |
| Feb 1, 2026 | Feb 28, 2026 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Feb 28, 2026 | - | |
| Jul 1, 2025 | - | MR | No | No | - | TT | - | Resolved | Mar 26, 2026 | - | |
| Jul 1, 2025 | Dec 31, 2025 | MR | No | No | - | TT | - | Archived | Dec 31, 2025 | - | |
| Jul 1, 2025 | - | MR | No | No | - | TT | - | Resolved | Mar 26, 2026 | - | |
| May 2, 2025 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| May 2, 2025 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Feb 10, 2025 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Feb 10, 2025 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Feb 10, 2025 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Feb 9, 2025 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Feb 9, 2025 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2025 | - | |
| Oct 29, 2024 | - | Other | No | No | - | - | - | Resolved | Dec 10, 2025 | - | |
| Oct 29, 2024 | - | Other | No | No | - | - | - | Resolved | Dec 10, 2025 | - | |
| Sep 19, 2024 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Sep 19, 2024 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Sep 19, 2024 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Aug 11, 2024 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Aug 11, 2024 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Jul 14, 2024 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Jul 14, 2024 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Jul 14, 2024 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Jul 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Jul 12, 2024 | - | |
| Jul 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Jul 12, 2024 | - | |
| Jul 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Jul 12, 2024 | - | |
| Jul 1, 2024 | - | MR | No | No | - | TT | - | Resolved | Jul 12, 2024 | - | |
| Mar 13, 2024 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Mar 13, 2024 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Mar 13, 2024 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Feb 24, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 29, 2024 | - | |
| Feb 24, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 29, 2024 | - | |
| Feb 24, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Feb 24, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 29, 2024 | - | |
| Feb 24, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 29, 2024 | - | |
| Feb 24, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 29, 2024 | - | |
| Feb 24, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 29, 2024 | - | |
| Feb 24, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 29, 2024 | - | |
| Feb 24, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 29, 2024 | - | |
| Feb 24, 2024 | - | TT | Yes | No | - | - | - | Unaddressed | - | - | |
| Jan 24, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 29, 2024 | - | |
| Jan 24, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 29, 2024 | - | |
| Jan 24, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 29, 2024 | - | |
| Jan 24, 2024 | - | TT | Yes | No | - | - | - | Resolved | Oct 29, 2024 | - | |
| Jan 17, 2024 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - | |
| Jan 17, 2024 | - | Other | No | No | - | - | - | Resolved | Oct 31, 2024 | - |
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.