Idaho Tap Water Quality: Is It Safe to Drink?
2026 EPA water quality data for 0 community water systems serving residents in Idaho. Find your water system to see violations, PFAS results, lead testing, and a safety grade — free.
Idaho relies predominantly on groundwater from the Snake River Plain Aquifer for drinking water supply. Naturally occurring arsenic and nitrate from agricultural runoff are the most common contaminants of concern. Water is generally very hard across southern Idaho, often exceeding 180 mg/L.
Find Your Water System in Idaho
Enter your ZIP code to see EPA violations, lead test results, PFAS data, and a safety grade for your water.
📊 Data from EPA’s SDWIS
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🔄 Updated quarterly
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🏛️ 0+ water systems in Idaho