Dayton
EPA ID: MN1270073 · 4,985 people served · 4 ZIP codes
ZipCheckup's reading of EPA records for Dayton (MN1270073): 2 violations on record since 2021. Looking at the EPA enforcement file for Dayton, 2 violations are listed in the dataset, and none is recorded as open for the 4,985 people in its service area.
Data: EPA SDWIS
Service Area Map
Coverage area for Dayton Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Dayton have a median household income of $140,922 and about 97,938 residents live in those ZIP codes (Census; not the number of people this system supplies).
💧 Where Does Your Water Come From?
Dayton'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.
Superfund Proximity Note: This service area ranks in the 80th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
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. 3 detections 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
Dayton (EPA ID: MN1270073) is a community water system in Minnesota that serves approximately 4,985 people from groundwater sources.
This system provides water to 4 ZIP codes across 3 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 1 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| December 1, 2025 | Revised Total Coliform Rule | Non-health-based | Resolved |
| October 1, 2025 | Chlorine | Non-health-based | Archived |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Chlorine | Monitoring & Reporting | 1 | No |
| Chlorine | Monitoring & Reporting | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| Below the reporting limit | 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
4 of 4 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 Dayton (MN1270073) on EPA.gov.
Frequently Asked Questions
Is Dayton water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Dayton; its 2 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Dayton serve?
Dayton serves approximately 4,985 people across 4 ZIP codes in Minnesota.
Where does Dayton get its water?
The primary water source is groundwater.
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
- #21 / 25 Highest Exposure Burden (Minnesota)
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Dayton (MN): 2 EPA Violations. https://zipcheckup.com/water-system/mn1270073/
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title = {{Dayton (MN): 2 EPA Violations}},
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url = {https://zipcheckup.com/water-system/mn1270073/}
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What You Can Do
Test your water
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Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Dayton (EPA ID: MN1270073) - request the latest Consumer Confidence Report or ask about specific contaminants.