Aqua Illinois-oak Brook
EPA ID: IL0430055 · 5,361 people served · 5 ZIP codes
ZipCheckup's reading of EPA SDWIS for Aqua Illinois-oak Brook (IL0430055): no EPA violations recorded in the last five years. Water monitoring for Aqua Illinois-oak Brook: clean, five years, 5,361 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Aqua Illinois-oak Brook Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Aqua Illinois-oak Brook serves a community with a median household income of $103,561 and an estimated 93,961 residents across its service area. Approximately 85% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Aqua Illinois-oak Brook'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.
Wastewater Proximity Note: This service area ranks in the 62th percentile nationally for proximity to wastewater discharge points. Surface water sources near wastewater outfalls may face additional treatment challenges.
Infrastructure Risk
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 Brook (EPA ID: IL0430055) is a community water system in Illinois that serves approximately 5,361 people from surface water sources.
This system provides water to 5 ZIP codes across 5 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0013 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 Aqua Illinois-oak Brook (IL0430055) on EPA.gov.
Frequently Asked Questions
Is Aqua Illinois-oak Brook water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Aqua Illinois-oak Brook 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 Brook serve?
Aqua Illinois-oak Brook serves approximately 5,361 people across 5 ZIP codes in Illinois.
Where does Aqua Illinois-oak Brook get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Aqua Illinois-oak Brook Water Quality Report, IL. https://zipcheckup.com/water-system/il0430055/
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title = {{Aqua Illinois-oak Brook Water Quality Report, IL}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/il0430055/}
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