Green Oaks
EPA ID: IL0970040 · 1,470 people served · 3 ZIP codes
ZipCheckup's reading of EPA SDWIS for Green Oaks (IL0970040): 3 unresolved EPA violations on record. Right now, Green Oaks shows 3 EPA violations marked active and unresolved - the provider continues to supply approximately 1,470 residents while each finding awaits closure.
Data: EPA SDWIS
Service Area Map
Coverage area for Green Oaks Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Green Oaks serves a community with a median household income of $127,546 and an estimated 111,997 residents across its service area. Approximately 66% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Green Oaks's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Superfund Proximity Note: This service area ranks in the 70th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
Detected Contaminants
How Green Oaks compares to EPA limits
What This Means For You
Stage 2 DBP Rule at 3 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Lead and Copper Rule at 1 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 1 detection recorded.
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
Green Oaks (EPA ID: IL0970040) is a community water system in Illinois that serves approximately 1,470 people from surface water sources.
This system provides water to 3 ZIP codes across 3 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 2 resolved, 0 archived, 0 addressed, and 3 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 |
|---|---|---|---|
| August 22, 2025 | Lead and Copper Rule | Non-health-based | Resolved |
| July 2, 2025 | Stage 2 DBP Rule | Non-health-based | Unaddressed (current) |
| July 1, 2025 | Surface Water Treatment Rule | Non-health-based | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Unaddressed (current) |
| October 17, 2024 | Stage 2 DBP Rule | Non-health-based | Unaddressed (current) |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 2 DBP Rule | Treatment Failure | 3 | Yes |
| Surface Water Treatment Rule | Treatment Failure | 1 | No |
| Lead and Copper Rule | Treatment Failure | 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.
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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Green Oaks (IL0970040) on EPA.gov.
Frequently Asked Questions
Is Green Oaks water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current health-based noncompliance record for Green Oaks. Review the utility's current notices and EPA record. This system-level compliance history cannot determine conditions at a specific tap.
How many people does Green Oaks serve?
Green Oaks serves approximately 1,470 people across 3 ZIP codes in Illinois.
Where does Green Oaks get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Green Oaks (IL): 1 Health Violation. https://zipcheckup.com/water-system/il0970040/
@misc{zipcheckup-water-system-il0970040,
author = {{ZipCheckup}},
title = {{Green Oaks (IL): 1 Health Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/il0970040/}
}
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
Green Oaks (EPA ID: IL0970040) - request the latest Consumer Confidence Report or ask about specific contaminants.