Marshall-Polk Rural Water System
EPA ID: MN1450005 · 3,295 people served · 10 ZIP codes
ZipCheckup's reading of EPA records for Marshall-Polk Rural Water System (MN1450005): no drinking-water violations recorded since 2021. Although compliance varies widely among water utilities nationally, the SDWIS file for Marshall-Polk Rural Water System lists no EPA violations for this supplier, whose service area covers 3,295 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Marshall-Polk Rural Water System Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Marshall-Polk Rural Water System have a median household income of $75,091 and about 27,351 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 77% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Marshall-Polk Rural Water System's water is classified in EPA records as a groundwater source. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Infrastructure Risk
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 1 detection recorded.
Comparable Water Systems
Similar-sized systems in Minnesota
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Marshall-Polk Rural Water System (EPA ID: MN1450005) is a community water system in Minnesota that serves approximately 3,295 people from groundwater sources.
This system provides water to 10 ZIP codes across 10 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.002 mg/L | No | 2025-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
10 of 10 ZIP records with known zones are in EPA Radon Zone 1.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by MN or modeled from parcel and building-footprint data.
- 56523 - Climax
- 56710 - Alvarado
- 56713 - Argyle
- 56716 - Crookston
- 56721 - East Grand Forks
- 56722 - Euclid
- 56723 - Fisher
- 56738 - Newfolden
- 56757 - Stephen
- 56762 - Warren
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Marshall-Polk Rural Water System (MN1450005) on EPA.gov.
Frequently Asked Questions
Is Marshall-Polk Rural Water System water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Marshall-Polk Rural Water System in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Marshall-Polk Rural Water System serve?
Marshall-Polk Rural Water System serves approximately 3,295 people across 10 ZIP codes in Minnesota.
Where does Marshall-Polk Rural Water System get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Marshall-Polk Rural Water System Water Quality Report, MN. https://zipcheckup.com/water-system/mn1450005/
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title = {{Marshall-Polk Rural Water System Water Quality Report, MN}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/mn1450005/}
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