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Nitrate at Belle Plaine

Minnesota · system MN1700001 · serves 7,456 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

3.80 mg/L as N
annual state figure · 2024
single sample — no range
three-year range (mg/L as N)
annual state figure
what this result rests on
7,456
people served

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 MN1700001 · the three years from August 9, 2023 to August 9, 2026

Where this ranks

This system's reported nitrate sits in the top 9% nationally. Systems reporting less serve about 91% of everyone on NitrateSmart's tracked supply; the other about 9% are on systems reporting the same or more. That compares what systems reported, not what comes out of any one tap.

Natural backgroundHuman impact likelyHuman impact clearHealth-study rangeAbove the federal limit

What "Human impact clear" means

Above 3 mg/L, human activity is the leading explanation for the nitrate in this system's water[1]. It is still a statement about the source, not a health verdict — the level is well below the federal limit.

Sources

  1. Madison, R.J., and Brunett, J.O. (1985). Overview of the occurrence of nitrate in ground water of the United States. U.S. Geological Survey Water-Supply Paper 2275, p. 93–105.

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.

NitrateSmart

Nitrate in community water systems, from the utilities’ own compliance reporting.

Results reaching back to July 2023 · current through August 9, 2026.

Data & methods

How this is built
Coverage and gaps

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