Public water system · ND2800389

Active

Garrison City of

At a glance

City of Garrison (PWSID ND2800389) is an active community water system in McLean County, North Dakota. It reports serving 1,453 people through 700 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in April 2006.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

1,453

Service connections

700

Primary source

Surface water

System type

CWS

Community water system

System record

PWSIDND2800389

System typeCommunity water system

Activity statusActive

Population served1,453

Service connections700

Primary water sourceSurface water

Owner typeLocal government

Primacy agencyND state drinking water program

City servedGarrison

StateNorth Dakota

ZIP—

CountyMcLean County

How does City of Garrison compare with other water systems in McLean County?

By EPA's size categories, City of Garrison is a small system (501 to 3,300 people). McLean County has 13 active public water systems, and City of Garrison is the 3rd-largest of them by population served. Its population served is about twice the county average of 746 people per system, and accounts for 15% of the 9,697 people reported by systems filed under the county. Across North Dakota, the 403 active systems average 1,864 people each. Nationally, the average active community water system reports serving 6,703 people, so City of Garrison is well below that figure.

What does “community water system” mean?

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. North Dakota has 317 active community water systems, 79% of the state's 403 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 20 North Dakota systems (5%) list surface water as their primary source.

Who owns and regulates City of Garrison?

EPA lists City of Garrison as owned by a local government. The ND state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 9 of the 13 active systems in McLean County (69%) are also owned by a local government.

Does City of Garrison have drinking water violations?

EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in April 2006. The violations listed here began between January 2005 and April 2006. By type: 3 public notice, recordkeeping or other, 3 required treatment not met, 2 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Interim Enhanced Surface Water Treatment Rule (4 of them). EPA lists 8 as resolved and 1 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.

Began	Violation	Contaminant or rule	Health-based	Status
2006-04-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Resolved
2006-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Resolved
2005-03-21	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2005-03-14	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2005-03-01	Required treatment not metSingle Turbidity Exceed (Enhanced SWTR) · code 43	Interim Enhanced Surface Water Treatment Rulecode 0300	Yes	Resolved
2005-02-27	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2005-02-01	Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44	Interim Enhanced Surface Water Treatment Rulecode 0300	Yes	Resolved
2005-01-01	Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44	Interim Enhanced Surface Water Treatment Rulecode 0300	Yes	Resolved
2005-01-01	Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38	Interim Enhanced Surface Water Treatment Rulecode 0300	No	Archived

All 9 violations in EPA's records, newest first. Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.

City of Garrison: frequently asked questions

Who runs City of Garrison?

City of Garrison (PWSID ND2800389) is a community water system owned by a local government. It is regulated by the ND state drinking water program.

How many people does City of Garrison serve?

City of Garrison reports serving 1,453 people through 700 service connections in McLean County, North Dakota.

Where does City of Garrison get its water?

EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.

Does City of Garrison have any drinking water violations?

EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in April 2006. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.

Is City of Garrison's water safe to drink?

AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's records list 9 violations for this system; 5 are health-based, and the most recent began in April 2006. For current results, consult the system's annual water quality report, EPA ECHO, or the ND state drinking water program.

Where can I find City of Garrison's water quality report?

As a community water system, City of Garrison must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.

Other water systems in McLean County

Water system	County	Population served	Type	Source
Garrison Rural Water District	McLean	1,805	Community	Purchased surface water
Mclean-Sheridan Water District-System 1	McLean	1,800	Community	Groundwater
Washburn City of	McLean	1,246	Community	Surface water
Underwood City of	McLean	778	Community	Purchased surface water
Turtle Lake City of	McLean	581	Community	Purchased groundwater
Rainbow Energy Center	McLean	532	Non-transient non-community	Surface water

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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, “Garrison City of, PWSID ND2800389, North Dakota”, https://aquacensus.com/water-systems/north-dakota/garrison-city-of-nd2800389 (data as of October 1, 2026).