Public water system · ND2800953
ActiveUnderwood City of
At a glance
City of Underwood (PWSID ND2800953) is an active community water system in McLean County, North Dakota. It reports serving 778 people through 566 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; 4 are health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
778
Service connections
566
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does City of Underwood compare with other water systems in McLean County?
By EPA's size categories, City of Underwood is a small system (501 to 3,300 people). McLean County has 13 active public water systems, and City of Underwood is the 5th-largest of them by population served. Its population served is roughly in line with the county average of 746 people per system, and accounts for 8% 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 Underwood 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 83 North Dakota systems (21%) list purchased surface water as their primary source.
Who owns and regulates City of Underwood?
EPA lists City of Underwood 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 Underwood have drinking water violations?
EPA's records list 6 violations for this system; 4 are health-based, and the most recent began in July 2025. The violations listed here began between July 1994 and July 2025. By type: 3 contaminant level above the legal limit, 1 reporting, 1 monitoring and reporting and 1 required treatment not met. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 3 as resolved and 3 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 |
|---|---|---|---|---|
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2004-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1998-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1998-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1997-03-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1994-07-01 | Required treatment not metOCCT/SOWT Study/Recommendation · code 57 | Lead and Copper Rulecode 5000 | Yes | Resolved |
All 6 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 Underwood: frequently asked questions
Who runs City of Underwood?
City of Underwood (PWSID ND2800953) 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 Underwood serve?
City of Underwood reports serving 778 people through 566 service connections in McLean County, North Dakota.
Where does City of Underwood get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does City of Underwood have any drinking water violations?
EPA's records list 6 violations for this system; 4 are health-based, and the most recent began in July 2025. 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 Underwood'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 6 violations for this system; 4 are health-based, and the most recent began in July 2025. 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 Underwood's water quality report?
As a community water system, City of Underwood 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 |
| Garrison City of | McLean | 1,453 | Community | Surface water |
| Washburn City of | McLean | 1,246 | Community | 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, “Underwood City of, PWSID ND2800953, North Dakota”, https://aquacensus.com/water-systems/north-dakota/underwood-city-of-nd2800953 (data as of October 1, 2026).