Explore water quality rankings organized by specific contaminants and metrics. Each page shows the best-performing systems for that particular measure.
These rankings are based on the most recent EPA testing data for public water systems in Minnesota. Each contaminant page focuses on a specific water quality metric to help you understand which systems perform best in that category.
Data is sourced from the EPA Safe Drinking Water Information System (SDWIS) and is updated regularly to reflect the latest available test results.
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