Grand Portage
Grand Portage (EPA ID 055294101) in Grand Portage, MN supplies surface water (rivers, lakes) to about 820 people: 18 violations since 2016, latest lead result 13.3 ppb, PFAS not tested.
Health-based violations since 2016: Interim Enhanced Surface Water Treatment Rule, Long Term 2 Enhanced Surface Water Treatment Rule, Lead and Copper Rule. 2 are still listed as unresolved in EPA records.
Below the current 15 ppb action level but above 10 ppb, the action level under EPA's Lead and Copper Rule Improvements (compliance from 2027). Latest round: Jan 2026.
This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5 covers systems serving over 3,300 people and a sample of smaller ones).
Service area
EPA service-area boundary (state-supplied or EPA-modeled)System facts
Health-based violations
| Contaminant or rule | Health-based violations since 2016 |
|---|---|
| Interim Enhanced Surface Water Treatment Rule | 11 |
| Long Term 2 Enhanced Surface Water Treatment Rule | 4 |
| Lead and Copper Rule | 2 |
| Revised Total Coliform Rule | 1 |
A health-based violation means a contaminant exceeded its legal limit (MCL) or a required treatment technique was not met, as reported by the state to EPA’s SDWIS. 2 still listed as unresolved (“unaddressed” or “addressed” but not yet returned to compliance); the latest began Jan 2026.
Lead
90th-percentile lead per sampling round (90% of the homes sampled were at or below this level). Black line: EPA’s 15 ppb action level; under the Lead and Copper Rule Improvements the action level becomes 10 ppb from 2027.
PFAS
This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5).
What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.
Questions
Has Grand Portage had drinking water violations?
Health-based violations since 2016: Interim Enhanced Surface Water Treatment Rule, Long Term 2 Enhanced Surface Water Treatment Rule, Lead and Copper Rule. 2 are still listed as unresolved in EPA records.
What is the lead level in Grand Portage water?
The latest 90th-percentile lead result (Jan 2026) was 13.3 ppb. EPA’s action level is 15 ppb (10 ppb from 2027).
Does Grand Portage have PFAS in its water?
This system was not part of EPA’s 2023–2025 nationwide PFAS testing (UCMR 5 covers systems serving over 3,300 people and a sample of smaller ones).