Safest Drinking Water in Minnesota 2026
Minnesota has 5 public water systems serving 1,122,748 people. The safest system is Rochester in Rochester with a score of 100/100.
Top 5 Water Systems in Minnesota
| # | Water System | City | Pop. Served | Source | Violations | Score |
|---|---|---|---|---|---|---|
| 1 | Rochester | Rochester | 123,624 | Ground water | 0 | A (100) |
| 2 | Minneapolis | Minneapolis | 425,300 | Surface water | 0 | A (91) |
| 3 | Bloomington | Bloomington | 91,300 | Surface water | 0 | A (91) |
| 4 | Brooklyn Park | Brooklyn Park | 89,995 | Ground water | 0 | B (80) |
| 5 | Saint Paul Regional Water Services | St. Paul | 392,529 | Surface water | 0 | C (74) |
Water quality data for Minnesota is sourced from the EPA Safe Drinking Water Information System (SDWIS), which tracks compliance for all public water systems.
Frequently Asked Questions
Rochester in Rochester has the highest Water Safety Score in Minnesota at 100/100 (Grade A), serving 123,624 people.
Minnesota has 5 public water systems serving 1,122,748 people. The average Water Safety Score is 87/100.
The Water Safety Score (0-100) is based on health violations (40%), contaminant exceedances (30%), enforcement history (20%), and monitoring violations (10%). Higher scores mean cleaner, safer water.
Water Safety Score: health violations (40%), contaminant exceedances (30%), enforcement history (20%), monitoring violations (10%).
The this entity category groups every U.S. public drinking-water safety entity sharing this attribute. The list above is the data; the paragraphs below explain what the grouping means against the broader the EPA Safe Drinking Water Information System (SDWIS) distribution and how to read the relative rankings within the category.
For readers using this category as a starting point, the per-entity detail pages linked from the table above carry the underlying the EPA Safe Drinking Water Information System (SDWIS) data in full. The category-level view is the filter; the per-entity pages are the actual answer.
Source: EPA Ground Water and Drinking Water, 2026.