Public water system · ND1100758
ActiveOakes City of
At a glance
City of Oakes (PWSID ND1100758) is an active community water system in Dickey County, North Dakota. It reports serving 1,856 people through 650 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 8 violations for this system; 3 are health-based, and the most recent began in August 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,856
Service connections
650
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does City of Oakes compare with other water systems in Dickey County?
By EPA's size categories, City of Oakes is a small system (501 to 3,300 people). Dickey County has 8 active public water systems, and City of Oakes is the largest of them by population served. Its population served is about 3.1 times the county average of 607 people per system, and accounts for 38% of the 4,858 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 Oakes 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 177 North Dakota systems (44%) list groundwater as their primary source.
Who owns and regulates City of Oakes?
EPA lists City of Oakes 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. 8 of the 8 active systems in Dickey County (100%) are also owned by a local government.
Does City of Oakes have drinking water violations?
EPA's records list 8 violations for this system; 3 are health-based, and the most recent began in August 2025. The violations listed here began between August 1996 and August 2025. By type: 3 monitoring and reporting, 3 contaminant level above the legal limit, 1 monitoring and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (7 of them). EPA lists 7 as archived and 1 as resolved. 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. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2005-06-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2003-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2000-11-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2000-11-01 | Public notice, recordkeeping or otherNotification, Public · code 06 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1998-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1998-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1996-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
All 8 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 Oakes: frequently asked questions
Who runs City of Oakes?
City of Oakes (PWSID ND1100758) 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 Oakes serve?
City of Oakes reports serving 1,856 people through 650 service connections in Dickey County, North Dakota.
Where does City of Oakes get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does City of Oakes have any drinking water violations?
EPA's records list 8 violations for this system; 3 are health-based, and the most recent began in August 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 Oakes' 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 8 violations for this system; 3 are health-based, and the most recent began in August 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 Oakes' water quality report?
As a community water system, City of Oakes 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 Dickey County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ellendale City of | Dickey | 1,394 | Community | Purchased groundwater |
| Southeast Wud (West) | Dickey | 1,275 | Community | Groundwater |
| Maple River Hutterian Association | Dickey | 140 | Community | Groundwater |
| Fullerton City of | Dickey | 54 | Community | Purchased groundwater |
| Forbes City of | Dickey | 53 | Community | Purchased surface water |
| Oakes Golf Club | Dickey | 50 | Transient non-community | Groundwater |
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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, “Oakes City of, PWSID ND1100758, North Dakota”, https://aquacensus.com/water-systems/north-dakota/oakes-city-of-nd1100758 (data as of October 1, 2026).