Minnesota · system MN1730036 · serves 20,300 people
Placed from Minnesota's annual per-system state figures — one step further from the tap than a raw sample. The three-year range below is the annual spread.
The reading
A single reading is not a complete account of what a household drinks, so the three-year range and the number of tests behind it are shown too — a reading backed by many tests over three years is a fuller picture than one from a single sample.
Source: annual figures reported to the Minnesota Department of Health - the stored report · Minnesota · system MN1730036 · the three years from August 9, 2023 to August 9, 2026
Where this ranks
This system's reported nitrate sits around the middle nationally. Systems reporting less serve about 27% of everyone on NitrateSmart's tracked supply; the other about 73% are on systems reporting the same or more. That compares what systems reported, not what comes out of any one tap.
What "Natural background" means
This system's nitrate sits within the range that occurs naturally in groundwater[1]. There is no sign of a human fingerprint in the water. It is a statement about the source, not a clean bill of health — nitrate is only one thing a water test looks at.
Sources
The bands describe how strongly human activity, read from nitrate, has marked a water source — they are not a safety verdict. More on what the numbers mean and where nitrate comes from.
Nitrate in community water systems, from the utilities’ own compliance reporting.
Results reaching back to July 2023 · current through August 9, 2026.
Educational information, not medical or personal safety advice.