Lake Thunderbird Subdivsion
EPA ID: IL1555050 · 450 people served · 4 ZIP codes
ZipCheckup's reading of EPA SDWIS for Lake Thunderbird Subdivsion (IL1555050): 2 unresolved EPA violations on record. EPA compliance records for Lake Thunderbird Subdivsion show 2 unresolved violations - findings that remain open and are tracked at the federal level, covering a service territory of approximately 450 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Lake Thunderbird Subdivsion Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Lake Thunderbird Subdivsion serves a community with a median household income of $82,500 and an estimated 2,765 residents across its service area. Approximately 62% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Lake Thunderbird Subdivsion'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.
Wastewater Proximity Note: This service area ranks in the 80th percentile nationally for proximity to wastewater discharge points.
Superfund Proximity Note: This service area ranks in the 60th 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 Lake Thunderbird Subdivsion compares to EPA limits
What This Means For You
Stage 2 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 1 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
Lake Thunderbird Subdivsion (EPA ID: IL1555050) is a community water system in Illinois that serves approximately 450 people from groundwater sources.
This system provides water to 4 ZIP codes across 4 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 0 archived, 0 addressed, and 2 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 |
|---|---|---|---|
| July 2, 2025 | Stage 2 DBP Rule | Non-health-based | Unaddressed (current) |
| July 2, 2025 | Surface Water Treatment Rule | Non-health-based | Unaddressed (current) |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Resolved |
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 | 2 | Yes |
| Surface Water Treatment 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 |
|---|---|---|
| 0.00143 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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Lake Thunderbird Subdivsion (IL1555050) on EPA.gov.
Frequently Asked Questions
Is Lake Thunderbird Subdivsion water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 2 current noncompliance records and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.
How many people does Lake Thunderbird Subdivsion serve?
Lake Thunderbird Subdivsion serves approximately 450 people across 4 ZIP codes in Illinois.
Where does Lake Thunderbird Subdivsion get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Lake Thunderbird Subdivsion (IL): 1 Health Violation. https://zipcheckup.com/water-system/il1555050/
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author = {{ZipCheckup}},
title = {{Lake Thunderbird Subdivsion (IL): 1 Health Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/il1555050/}
}
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
Lake Thunderbird Subdivsion (EPA ID: IL1555050) - request the latest Consumer Confidence Report or ask about specific contaminants.