North Dakota Tap Water Quality: Is It Safe to Drink?
2026 EPA water quality data for 0 community water systems serving residents in North Dakota. Find your water system to see violations, PFAS results, lead testing, and a safety grade — free.
North Dakota relies on surface water from the Missouri River system and groundwater from glacial aquifers. Water is extremely hard across most of the state, with many areas exceeding 300 mg/L. Naturally occurring arsenic and uranium have been detected in some aquifers in the western oil-producing region.
Find Your Water System in North Dakota
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📊 Data from EPA’s SDWIS
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🔄 Updated quarterly
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🏛️ 0+ water systems in North Dakota