Tap and WellTreasure Valley water, from the public record

Nitrate (as N) in Boise water

10 systems serving Boise City detected Nitrate (as N) in the last 36 months. 2 are elevated. The federal MCL is 10.00ppm.

System36 mo maxLatestStatusLast sample
Veolia Water Idaho6.50ppm0.90ppmElevated2026-08-27
Meridian Water Department5.60ppm0.80ppmElevated2026-06-24
Capitol Water Corp.4.10ppmNDDetected2026-07-14
Linda Vista Mobile Home Park3.70ppm3.70ppmDetected2026-03-10
IDOC Idaho State Correctional Center3.50ppm2.62ppmDetected2025-08-19
IDOC SBX Complex3.31ppm3.31ppmDetected2026-08-25
Amy Trailer Park2.10ppm2.10ppmDetected2026-03-02
Flying H Trailer Ranch2.00ppm1.90ppmDetected2026-03-10
Rustic Acres Mobile Home Park0.60ppmNDDetected2025-11-20
Garden City Water and Sewer System0.50ppmNDDetected2026-06-16
Infants below the age of six months who drink water containing nitrate in excess of the MCL could become seriously ill and, if untreated, may die. Symptoms include shortness of breath and blue-baby syndrome.EPA, quoted. This site does not paraphrase health guidance; for infants and pregnancy, read the agency text as written.

Nitrate (as N) in Treasure Valley drinking water. Boise City water quality.

Numbers are the system's samples at its taps and wells, not yours. Lead and copper are 90th percentiles from sampled homes. Well pages are nearby-sample estimates. Health text restates EPA and DEQ. Methodology.