Tap and WellTreasure Valley water, from the public record

Gross Alpha in Boise water

9 systems serving Boise City detected Gross Alpha in the last 36 months. The federal MCL is 15.0pCi/L.

System36 mo maxLatestStatusLast sample
Capitol Water Corp.37.9pCi/L25.0pCi/LNot detected2026-07-14
Meridian Water Department37.5pCi/L23.2pCi/LNot detected2026-07-29
Veolia Water Idaho29.5pCi/L29.5pCi/LNot detected2026-07-28
Rustic Acres Mobile Home Park9.58pCi/L9.58pCi/LNot detected2025-11-20
IDOC Idaho State Correctional Center8.53pCi/L8.53pCi/LDetected2025-08-19
Flying H Trailer Ranch6.62pCi/L6.62pCi/LDetected2025-04-08
IDOC SBX Complex5.37pCi/L5.37pCi/LNot detected2025-08-05
Linda Vista Mobile Home Park4.13pCi/L4.13pCi/LNot detected2025-04-08
Amy Trailer Park0.00pCi/L0.00pCi/LNot detected2025-10-22
Some people who drink water containing alpha emitters in excess of the MCL over many years may have an increased risk of getting cancer.EPA, quoted. This site does not paraphrase health guidance.

Gross Alpha 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.