Public water system · MN1140003
ActiveDilworth
At a glance
Dilworth (PWSID MN1140003) is an active community water system in Clay County, Minnesota. It reports serving 4,918 people through 1,452 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in February 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,918
Service connections
1,452
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Dilworth compare with other water systems in Clay County?
By EPA's size categories, Dilworth is a medium system (3,301 to 10,000 people). Clay County has 47 active public water systems, and Dilworth is the 2nd-largest of them by population served. Its population served is about 3.8 times the county average of 1,280 people per system, and accounts for 8.2% of the 60,153 people reported by systems filed under the county. Across Minnesota, the 6,465 active systems average 820 people each. Nationally, the average active community water system reports serving 6,703 people, so Dilworth is about 27% 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. Minnesota has 987 active community water systems, 15% of the state's 6,465 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 37 Minnesota systems (0.6%) list purchased surface water as their primary source.
Who owns and regulates Dilworth?
EPA lists Dilworth as owned by a local government. The MN state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 15 of the 47 active systems in Clay County (32%) are also owned by a local government.
Does Dilworth have drinking water violations?
EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in February 2025. The violations listed here began between September 1991 and February 2025. By type: 3 monitoring, 3 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Revised Total Coliform Rule (3 of them). EPA lists 5 as resolved and 2 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 |
|---|---|---|---|---|
| 2025-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2016-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2006-10-03 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2003-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 7 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.
Dilworth: frequently asked questions
Who runs Dilworth?
Dilworth (PWSID MN1140003) is a community water system owned by a local government. It is regulated by the MN state drinking water program.
How many people does Dilworth serve?
Dilworth reports serving 4,918 people through 1,452 service connections in Clay County, Minnesota.
Where does Dilworth 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 Dilworth have any drinking water violations?
EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in February 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 Dilworth'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 7 violations for this system; 1 is health-based, and the most recent began in February 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the MN state drinking water program.
Where can I find Dilworth's water quality report?
As a community water system, Dilworth 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 Clay County
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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, “Dilworth, PWSID MN1140003, Minnesota”, https://aquacensus.com/water-systems/minnesota/dilworth-mn1140003 (data as of October 1, 2026).