Public water system · ND5301079
ActiveNorthwest Rural Water District
At a glance
Northwest Rural Water District (PWSID ND5301079) is an active community water system in Williams County, North Dakota. It reports serving 5,102 people through 2,124 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. EPA's records list 6 violations for this system; none is health-based, and the most recent began in July 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
5,102
Service connections
2,124
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Northwest Rural Water District compare with other water systems in Williams County?
By EPA's size categories, Northwest Rural Water District is a medium system (3,301 to 10,000 people). Williams County has 19 active public water systems, and Northwest Rural Water District is the 2nd-largest of them by population served. Its population served is about 156% above the county average of 1,990 people per system, and accounts for 13% of the 37,806 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 Northwest Rural Water District is about 24% 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 Northwest Rural Water District?
EPA lists Northwest Rural Water District as privately owned. 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. 10 of the 19 active systems in Williams County (53%) are also privately owned.
Does Northwest Rural Water District have drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in July 2023. The violations listed here began between July 1993 and July 2023. By type: 6 monitoring and reporting. 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 |
|---|---|---|---|---|
| 2023-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2023-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2004-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1998-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1996-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1993-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | 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.
Northwest Rural Water District: frequently asked questions
Who runs Northwest Rural Water District?
Northwest Rural Water District (PWSID ND5301079) is a community water system privately owned. It is regulated by the ND state drinking water program.
How many people does Northwest Rural Water District serve?
Northwest Rural Water District reports serving 5,102 people through 2,124 service connections in Williams County, North Dakota.
Where does Northwest Rural Water District 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 Northwest Rural Water District have any drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in July 2023. 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 Northwest Rural Water District'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; none is health-based, and the most recent began in July 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the ND state drinking water program.
Where can I find Northwest Rural Water District's water quality report?
As a community water system, Northwest Rural Water District 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 Williams County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Williston City of | Williams | 26,426 | Community | Surface water |
| Tioga City of | Williams | 2,202 | Community | Purchased surface water |
| R & T Water System | Williams | 1,003 | Community | Purchased surface water |
| Ray City of | Williams | 950 | Community | Purchased surface water |
| Trenton Water Users Assoc | Williams | 840 | Community | Purchased surface water |
| Inspire Communities-Springbrook | Williams | 300 | Community | Purchased 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, “Northwest Rural Water District, PWSID ND5301079, North Dakota”, https://aquacensus.com/water-systems/north-dakota/northwest-rural-water-district-nd5301079 (data as of October 1, 2026).