Public water system · MN1450005
ActiveMarshall-Polk Rural Water System
At a glance
Marshall-Polk Rural Water System (PWSID MN1450005) is an active community water system in Marshall County, Minnesota. It reports serving 3,295 people through 1,455 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in July 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,295
Service connections
1,455
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Marshall-Polk Rural Water System compare with other water systems in Marshall County?
By EPA's size categories, Marshall-Polk Rural Water System is a small system (501 to 3,300 people). Marshall County has 17 active public water systems, and Marshall-Polk Rural Water System is the largest of them by population served. Its population served is about 7.1 times the county average of 467 people per system, and accounts for 42% of the 7,939 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 Marshall-Polk Rural Water System is about half of 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 6,261 Minnesota systems (97%) list groundwater as their primary source.
Who owns and regulates Marshall-Polk Rural Water System?
EPA lists Marshall-Polk Rural Water System 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. 12 of the 17 active systems in Marshall County (71%) are also owned by a local government.
Does Marshall-Polk Rural Water System have drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in July 2015. The violations listed here began between November 1994 and July 2015. By type: 2 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (2 of them). EPA lists 2 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 |
|---|---|---|---|---|
| 2015-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2014-06-02 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 1994-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 3 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.
Marshall-Polk Rural Water System: frequently asked questions
Who runs Marshall-Polk Rural Water System?
Marshall-Polk Rural Water System (PWSID MN1450005) is a community water system owned by a local government. It is regulated by the MN state drinking water program.
How many people does Marshall-Polk Rural Water System serve?
Marshall-Polk Rural Water System reports serving 3,295 people through 1,455 service connections in Marshall County, Minnesota.
Where does Marshall-Polk Rural Water System 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 Marshall-Polk Rural Water System have any drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in July 2015. 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 Marshall-Polk Rural Water System'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 3 violations for this system; 2 are health-based, and the most recent began in July 2015. For current results, consult the system's annual water quality report, EPA ECHO, or the MN state drinking water program.
Where can I find Marshall-Polk Rural Water System's water quality report?
As a community water system, Marshall-Polk Rural Water System 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 Marshall County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Warren | Marshall | 1,551 | Community | Groundwater |
| Stephen | Marshall | 568 | Community | Purchased groundwater |
| Argyle | Marshall | 533 | Community | Groundwater |
| Alvarado | Marshall | 377 | Community | Purchased groundwater |
| Newfolden | Marshall | 338 | Community | Groundwater |
| Middle River | Marshall | 299 | 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, “Marshall-Polk Rural Water System, PWSID MN1450005, Minnesota”, https://aquacensus.com/water-systems/minnesota/marshall-polk-rural-water-system-mn1450005 (data as of October 1, 2026).