Twin Falls City Of

Water Quality Snapshot: Twin Falls City Of

Twin Falls City Of is a local-owned community water system that delivers drinking water to 56,121 residents in Twin Falls, Idaho (Twin Falls County) through 19,273 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 164 total violations for this system , of which 120 (73%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 27 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Arsenic, recorded in 117 violations (MCL, health-based). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across Idaho, EPA tracks 2,005 public water systems serving 1,743,912 people, with 104,850 cumulative violations and 19,965 health-based violations on record. About 96% of systems in the state carry at least one violation, and state-wide the average per system is 52.3 violations. Statewide, 40 of 60 UCMR5-tested systems have reported PFAS detections (66.7%).

Twin Falls City Of's 164 violations sit above the Idaho average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.