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North Dakota Water Quality
128
Utilities in database
0.7M
Residents served
48%
On private wells
2
Key contaminants tracked
Drinking Water in North Dakota
North Dakota has 128 community water systems serving approximately 0.7 million residents. Primary water sources include groundwater. The most commonly reported contaminants include disinfection byproducts, lead. 48% of North Dakota residents rely on private wells. NDDoH holds primary enforcement authority under the Safe Drinking Water Act.
Utilities in North Dakota
101–125 of 128City of Napoleon
ND2400715 · 792 served
All Seasons Wd-system Iii
ND0501127 · 790 served
City of Mohall
ND3800695 · 783 served
City of Underwood
ND2800953 · 778 served
City of Hatton
ND4900465 · 777 served
City of Dunseith
ND4000277 · 773 served
City of Gwinner
ND4100428 · 753 served
City of Ashley
ND2600038 · 749 served
City of Hebron
ND3000473 · 747 served
City of Mott
ND2100704 · 721 served
City of Harwood
ND0900460 · 718 served
City of Steele
ND2200913 · 715 served
City of Wilton
ND0801031 · 711 served
City of Kindred
ND0900524 · 692 served
City of Lakota
ND3200536 · 672 served
All Seasons Wd-system Iv
ND4001153 · 670 served
City of Milnor
ND4101425 · 653 served
City of Lidgerwood
ND3900567 · 652 served
City of Elgin
ND1900303 · 642 served
City of Portland
ND4900803 · 606 served
City of Minto
ND5000691 · 604 served
City of New England
ND2100726 · 600 served
City of Pembina
ND3400777 · 592 served
City of Center
ND3300174 · 588 served
City of Turtle Lake
ND2800949 · 581 served
Key Contaminant Concerns in North Dakota
Lead
Lead is a naturally occurring heavy metal that was widely used in plumbing infrastructure until it was banned for new installations in 1986. An estimated 9.2 million lead service lines still connect homes to public water mains across the United States, along with millions of homes with lead solder in their internal plumbing.
DBPs
When utilities add chlorine to water to kill pathogens, it reacts with dissolved organic matter — leaves, algae, soil — to produce disinfection byproducts (DBPs). Over 600 DBPs have been identified. The EPA regulates two groups: total trihalomethanes (TTHMs, including chloroform) and haloacetic acids (HAA5). DBP levels tend to be highest in surface water systems and in warm months when organic matter is elevated.
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Data source: Utility data from EPA SDWIS. 128 active community water systems ingested. CCR contaminant data ingestion in progress.
Last updated: 2026-04-24