Tap and WellTreasure Valley water, from the public record

Radium 226 + 228 in Boise water

6 systems serving Boise City detected Radium 226 + 228 in the last 36 months. The federal MCL is 5.00pCi/L.

System36 mo maxLatestStatusLast sample
Meridian Water Department2.47pCi/L0.57pCi/LDetected2026-03-24
Veolia Water Idaho1.94pCi/LNDDetected2026-07-28
Garden City Water and Sewer System1.36pCi/LNDDetected2025-09-04
IDOC SBX Complex0.18pCi/L0.04pCi/LDetected2025-08-05
IDOC Idaho State Correctional Center0.18pCi/L0.18pCi/LDetected2025-08-19
Amy Trailer Park0.00pCi/L0.00pCi/LDetected2025-10-22
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. 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.