Elm Oak Mutual Water System
EPA ID: IL0975736 · 50 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Elm Oak Mutual Water System (IL0975736): 2 EPA violations in the last five years. Over the past five years, Elm Oak Mutual Water System recorded 2 violations, all subsequently resolved through the EPA enforcement process - the supplier currently operates in good standing, with no active actions on file for its 50 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Elm Oak Mutual Water System Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Elm Oak Mutual Water System serves a community with a median household income of $225,551 and an estimated 20,957 residents across its service area. Approximately 64% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Elm Oak Mutual Water System'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 70th 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 Elm Oak Mutual Water System compares to EPA limits
What This Means For You
Lead and Copper Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Comparable Water Systems
Similar-sized systems in Illinois
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
Elm Oak Mutual Water System (EPA ID: IL0975736) is a community water system in Illinois that serves approximately 50 people from groundwater sources.
This system serves ZIP code 60045 in Lake Forest.
Violation History
Status breakdown for accepted records with record years 2021-2026: 2 resolved, 0 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 |
|---|---|---|---|
| February 11, 2024 | Lead and Copper Rule | Non-health-based | Resolved |
| February 11, 2024 | Lead and Copper 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 |
|---|---|---|---|
| Lead and Copper Rule | Treatment Failure | 2 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.005 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.
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 IL or modeled from parcel and building-footprint data.
- 60045 - Lake Forest
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Elm Oak Mutual Water System (IL0975736) on EPA.gov.
Frequently Asked Questions
Is Elm Oak Mutual Water System water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Elm Oak Mutual Water System; 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 Elm Oak Mutual Water System serve?
Elm Oak Mutual Water System serves approximately 50 people across 1 ZIP code in Illinois.
Where does Elm Oak Mutual Water System get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Elm Oak Mutual Water System (IL): 2 EPA Violations. https://zipcheckup.com/water-system/il0975736/
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author = {{ZipCheckup}},
title = {{Elm Oak Mutual Water System (IL): 2 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/il0975736/}
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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
Elm Oak Mutual Water System (EPA ID: IL0975736) - request the latest Consumer Confidence Report or ask about specific contaminants.