Aqua Illinois-oak Run
EPA ID: IL0955200 · 1,885 people served · 8 ZIP codes
ZipCheckup's reading of EPA SDWIS for Aqua Illinois-oak Run (IL0955200): no EPA violations recorded in the last five years. Water monitoring for Aqua Illinois-oak Run: clean, five years, 1,885 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Aqua Illinois-oak Run Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Aqua Illinois-oak Run serves a community with a median household income of $77,094 and an estimated 39,863 residents across its service area. Approximately 77% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 56% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
Aqua Illinois-oak Run'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
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 10 detections recorded. 4 exceed federal EPA limits (4 ppt for PFOA/PFOS). 2 exceed state limits.
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
Aqua Illinois-oak Run (EPA ID: IL0955200) is a community water system in Illinois that serves approximately 1,885 people from groundwater sources.
This system provides water to 8 ZIP codes across 8 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0088 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 1 (High 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 IL or modeled from parcel and building-footprint data.
- 61401 - Galesburg
- 61428 - Dahinda
- 61436 - Gilson
- 61448 - Knoxville
- 61467 - Oneida
- 61472 - Rio
- 61485 - Victoria
- 61488 - Wataga
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Aqua Illinois-oak Run (IL0955200) on EPA.gov.
Frequently Asked Questions
Is Aqua Illinois-oak Run water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Aqua Illinois-oak Run 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 Aqua Illinois-oak Run serve?
Aqua Illinois-oak Run serves approximately 1,885 people across 8 ZIP codes in Illinois.
Where does Aqua Illinois-oak Run get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Aqua Illinois-oak Run Water Quality Report, IL. https://zipcheckup.com/water-system/il0955200/
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title = {{Aqua Illinois-oak Run Water Quality Report, IL}},
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url = {https://zipcheckup.com/water-system/il0955200/}
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