Cokato
EPA ID: MN1860006 · 2,792 people served · 2 ZIP codes
ZipCheckup's reading of EPA records for Cokato (MN1860006): no drinking-water violations recorded since 2021. Zero violations are listed in EPA monitoring data for Cokato; a count of records like this is not a water-quality test for the 2,792 residents it serves.
Data: EPA SDWIS
Service Area Map
Coverage area for Cokato Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Cokato have a median household income of $90,652 and about 9,147 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 60% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Cokato'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
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
Cokato (EPA ID: MN1860006) is a community water system in Minnesota that serves approximately 2,792 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.001 mg/L | No | 2023-12-31 |
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
2 of 2 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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Cokato (MN1860006) on EPA.gov.
Frequently Asked Questions
Is Cokato water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Cokato 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 Cokato serve?
Cokato serves approximately 2,792 people across 2 ZIP codes in Minnesota.
Where does Cokato get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Cokato Water Quality Report, MN. https://zipcheckup.com/water-system/mn1860006/
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title = {{Cokato Water Quality Report, MN}},
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