Tap and WellTreasure Valley water, from the public record

Radium 226 + 228 in Mountain Home water

2 systems serving Mountain Home detected Radium 226 + 228 in the last 36 months. The federal MCL is 5.00pCi/L.

System36 mo maxLatestStatusLast sample
City of Mountain Home1.19pCi/LNDDetected2025-09-30
Oakleaf Subdivision0.00pCi/L0.00pCi/LDetected2025-11-11
Some people who drink water containing radium 226 or 228 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.

Radium 226 + 228 in Treasure Valley drinking water. Mountain Home 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.