Oak Grove
EPA ID: MN1020044 · 623 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Oak Grove (MN1020044): 3 EPA violations in the last five years. Past issues aside, Oak Grove cleared all 3 violations and is compliant today, supplying 623 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Oak Grove Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Oak Grove serves a community with a median household income of $126,957 and an estimated 11,025 residents across its service area. Approximately 46% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Oak Grove's water is pumped from underground aquifers. 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
Detected Contaminants
How Oak Grove compares to EPA limits
What This Means For You
Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Revised Total Coliform Rule at 1 presence exceeds the EPA maximum of presence.
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
Oak Grove (EPA ID: MN1020044) is a community water system in Minnesota that serves approximately 623 people from groundwater sources.
This system serves ZIP code 55011 in Cedar.
Violation History
Status breakdown for accepted records with record years 2021-2026: 2 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 |
|---|---|---|---|
| October 1, 2025 | Consumer Confidence Report Rule | Non-health-based | Resolved |
| October 1, 2025 | Revised Total Coliform Rule | Non-health-based | Archived |
| October 1, 2024 | Stage 1 DBP Rule | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
| Consumer Confidence Report Rule | Reporting Failure | 1 | No |
| Revised Total Coliform Rule | Microbiological | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0 mg/L | No | N/A |
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
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
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.
- 55011 - Cedar
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Oak Grove (MN1020044) on EPA.gov.
Frequently Asked Questions
Is Oak Grove water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Oak Grove; its 3 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Oak Grove serve?
Oak Grove serves approximately 623 people across 1 ZIP code in Minnesota.
Where does Oak Grove get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Oak Grove (MN): 3 EPA Violations. https://zipcheckup.com/water-system/mn1020044/
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title = {{Oak Grove (MN): 3 EPA Violations}},
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url = {https://zipcheckup.com/water-system/mn1020044/}
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Oak Grove (EPA ID: MN1020044) - request the latest Consumer Confidence Report or ask about specific contaminants.