Twin Falls, Idaho: Is the Tap Water Safe to Drink?
2026 EPA water quality data for 38 community water systems serving 62,159+ residents. See violations, PFAS results, lead test results, and safety grades — free.
Is Twin Falls Tap Water Safe to Drink?
37 of 38 tested water systems in Twin Falls meet federal drinking water standards with no active violations. 1 system has 1 active health-based violation — check individual reports below for details.
Twin Falls Water Quality Overview
Twin Falls, Idaho is served by 38 community water systems providing water to approximately 62,159 residents. These systems draw from groundwater (37), groundwater purchased (1) sources. 1 active health-based violation across Twin Falls water systems require attention. Including monitoring and reporting violations, there are 533 total violations on record.
Find Your Water System
Search by ZIP code to find your exact water provider and see its full EPA report.
All 38 water systems in Twin Falls
Looking for water quality data across the whole state? See our full Idaho tap water safety report covering Idaho’s EPA-regulated water systems.
Twin Falls Drinking Water: Frequently Asked Questions
Is Twin Falls, Idaho tap water safe to drink?
37 of 38 tested water systems in Twin Falls meet federal drinking water standards with no active violations. 1 system has 1 active health-based violation — check individual reports below for details.
How many water utilities serve Twin Falls, Idaho?
38 community water systems serve Twin Falls, Idaho, providing water to approximately 62,159 people. Different neighborhoods may be served by different utilities. Enter your ZIP code at the top to find your specific provider.
Does Twin Falls tap water have lead?
Lead in drinking water typically enters from old pipes and fixtures inside homes and buildings, not from the treatment plant. The EPA requires water systems to monitor for lead under the Lead and Copper Rule. Click any water system above to see its most recent 90th-percentile lead test results. Homes built before 1986 are most likely to have lead plumbing components.
What contaminants have been found in Twin Falls drinking water?
EPA violation records for Twin Falls water systems are listed on each utility's report page. Common regulated contaminants include disinfection byproducts (TTHMs, HAA5), coliform bacteria, nitrates, and lead. Click any utility above to see its full violation history going back 10 years.
How do I find out which water company serves my address in Twin Falls?
Enter your Twin Falls ZIP code in the search box at the top of this page. ClearWater will identify the specific water system serving your area and show you its EPA violation history, lead test results, and an overall safety grade. You can also check your water bill or your utility's annual Consumer Confidence Report (CCR).