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McKenzie County, North Dakota — public water systems

At a glance

12 active public water systems are filed under McKenzie County, North Dakota in EPA's SDWIS records, together reporting 12,159 people served. The largest is City of Watford City, which reports serving 6,390 people. 5 are community water systems serving people where they live; the other 7 are non-community systems, such as schools, workplaces, campgrounds and gas stations with their own supply.

Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

12

Population served

12.2K

Community systems

5

Groundwater share

75%

How does McKenzie County compare with other North Dakota counties?

McKenzie County has the 9th-most active public water systems among the 61 counties listed for active North Dakota systems in EPA records; among the 49 with 3 or more systems, the median has 6. Its systems report 12,159 people served in total, the 12th-largest county figure in the state and 1.6% of the statewide total. The average system here reports serving 1,013 people, about half of the North Dakota average of 1,864. Population figures are what each system reports; people served by more than one system, such as a wholesaler and the town that buys from it, are counted by each.

Where does McKenzie County's drinking water come from?

By primary water source, McKenzie County's active systems draw on groundwater (9, 75%) and purchased surface water (3, 25%). Overall, 75% rely mainly on groundwater (including purchased groundwater) and 25% on surface water, compared with 74% and 26% across North Dakota. Groundwater means the system draws its water from wells or springs fed by underground aquifers. The county's largest system, City of Watford City, draws primarily on purchased surface water.

What kinds of water systems operate in McKenzie County?

McKenzie County's active systems break down as 5 community systems (42%) and 7 transient non-community systems (58%). A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. EPA lists their owner types as private (67%), local government (25%) and federal government (8.3%).

Water systems in McKenzie County

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Active public water systems in McKenzie County, North Dakota
#Water systemCountyPopulation servedTypeSource
1Watford City City ofMcKenzie6,390CommunityPurchased surface water
2Mckenzie County WrdMcKenzie3,895CommunityPurchased surface water
3Alexander City ofMcKenzie1,335CommunityGroundwater
4Telluride LodgeMcKenzie120Transient non-communityGroundwater
5Short Stop Convenience StoreMcKenzie100Transient non-communityGroundwater
6Sweet Crude Travel CenterMcKenzie75Transient non-communityGroundwater
7Juniper CampgroundMcKenzie67Transient non-communityGroundwater
8Sandstone DevelopmentMcKenzie52Transient non-communityGroundwater
9T Roosevelt Natl Pk-NorthMcKenzie35Transient non-communityGroundwater
10Watford Residence SuitesMcKenzie32CommunityGroundwater
11Northern Lights LodgeMcKenzie30Transient non-communityGroundwater
12Arnegard City ofMcKenzie28CommunityPurchased surface water

McKenzie County water systems: frequently asked questions

How many public water systems are in McKenzie County, North Dakota?

EPA's SDWIS records file 12 active public water systems under McKenzie County, North Dakota: 5 community systems (42%) and 7 transient non-community systems (58%).

Who supplies drinking water in McKenzie County, ND?

The largest community water systems filed under McKenzie County are City of Watford City (6,390 people served), Mckenzie County Wrd (3,895 people served) and City of Alexander (1,335 people served). Which system serves a particular address depends on its service area, which EPA's SDWIS records do not include; a water bill or the local utility can confirm it.

Does McKenzie County's drinking water come from groundwater or surface water?

Of the 12 active public water systems in McKenzie County, 75% draw mainly on groundwater and 25% on surface water, counting purchased supplies. The largest system, City of Watford City, uses purchased surface water.

Where can I find a water quality report for McKenzie County?

Each community water system must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1, covering the previous calendar year. 5 community systems are filed under McKenzie County, so the report to look for is the one from the system that supplies your address.

How can I check violations for a water system in McKenzie County?

Open the system's profile from the list on this page. Each profile shows the most recent Safe Drinking Water Act violations in EPA's records, with plain-English labels and whether each one is resolved. For current compliance status, EPA ECHO is the primary source.

More North Dakota water systems

About this data

Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.

Cite as: AquaCensus, “Public water systems in McKenzie County, North Dakota”, https://aquacensus.com/water-systems/north-dakota/mckenzie (data as of October 1, 2026).