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Nitrate at Ni-Lah-Sha Village Hoa

Oregon · system OR4101480 · serves 70 people · purchased water

This system purchases its water; the band reflects the supplier's most recent reported result within a rolling three-year window. The three-year range below is the supplier's, not this system's own sampling. The water comes from Redmond Water Department (OR4100693).

The reading

0.53 mg/L as N
supplier's reading · Sep 2025
0.22 to 4.6
three-year range (mg/L as N)
inherited from supplier
what this result rests on
70
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: purchased water - values inherited from OR4100693 · Oregon · system OR4101480 · the three years from August 9, 2023 to August 9, 2026

Where this ranks

The water this system purchases sits around the middle nationally. Systems reporting less serve about 55% of everyone on NitrateSmart's tracked supply; the other about 45% 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 "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

  1. Dubrovsky, N.M., and others (2010). Nutrients in the Nation's Streams and Groundwater, 1992–2004. U.S. Geological Survey Circular 1350.

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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