North Dakota Tap Water Quality
Check a North Dakota ZIP Code
Overview
Fargo and Grand Forks treat Red River water, Bismarck sits on excellent Missouri River supply, and the major systems comply fully. The signature achievement is rural: pipeline networks like the Southwest Pipeline and Northwest Area Water Supply now deliver treated Missouri River water across enormous thinly populated areas, replacing poor-quality local wells.
Natural groundwater quality is the historic weakness: high sulfates, sodium, and total dissolved solids made many prairie wells barely drinkable, which is why the state built its pipeline systems. Oil-patch activity in the Bakken adds localized spill and brine-disposal concerns for shallow aquifers.
Common Contaminants in North Dakota
Naturally high in prairie groundwater; the driver behind regional pipeline systems rather than a violation issue in treated supplies
Standard rural private-well risks, with state testing programs available
Localized saltwater-disposal and pipeline incidents affect some shallow aquifers and streams; monitored by state regulators
Violations & Compliance
Compliance is strong and improving as regional systems replace marginal wells; remaining violations are mostly monitoring lapses in very small systems.
City Reports for North Dakota
We haven't published individual city water reports for North Dakota yet. Use the ZIP lookup for a statewide assessment, and check your utility's annual Consumer Confidence Report for local detail.
Frequently Asked Questions
Sources & References
The safety rating and guidance on this page draw on the following sources. See our full methodology.
- •US EPA Safe Drinking Water Act regulations
- •EWG Tap Water Database
- •The utility's most recent Consumer Confidence Report (CCR)
- •WHO Guidelines for Drinking-water Quality