Merrionette Park
EPA ID: IL0311890 · 1,969 people served · 2 ZIP codes
ZipCheckup's reading of EPA SDWIS for Merrionette Park (IL0311890): 2 unresolved EPA violations on record. The EPA enforcement database lists 2 active violations for Merrionette Park - a provider that delivers drinking water to approximately 1,969 people and has not yet formally resolved those findings.
Data: EPA SDWIS
Service Area Map
Coverage area for Merrionette Park Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Merrionette Park serves a community with a median household income of $90,499 and an estimated 49,883 residents across its service area. Approximately 84% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 46% 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?
Merrionette Park'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.
Infrastructure Risk
Detected Contaminants
How Merrionette Park compares to EPA limits
What This Means For You
Haloacetic Acids (HAA5) at 1 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
Total Trihalomethanes (TTHM) at 1 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Surface Water Treatment Rule at 3 mg/L exceeds the EPA maximum of mg/L.
Haloacetic Acids (HAA5) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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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
Merrionette Park (EPA ID: IL0311890) is a community water system in Illinois that serves approximately 1,969 people from surface water sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 2 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 1, 2025 | Surface Water Treatment Rule | Non-health-based | Unaddressed (current) |
| January 1, 2025 | Total Trihalomethanes (TTHM) | Non-health-based | Archived |
| January 1, 2025 | Haloacetic Acids (HAA5) | Non-health-based | Archived |
| July 1, 2024 | Surface Water Treatment Rule | Non-health-based | Unaddressed (current) |
| July 1, 2023 | Surface Water Treatment 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 |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Failure | 3 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 1 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0048 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 Merrionette Park (IL0311890) on EPA.gov.
Frequently Asked Questions
Is Merrionette Park 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 Merrionette Park serve?
Merrionette Park serves approximately 1,969 people across 2 ZIP codes in Illinois.
Where does Merrionette Park get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Merrionette Park (IL): 5 EPA Violations. https://zipcheckup.com/water-system/il0311890/
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title = {{Merrionette Park (IL): 5 EPA Violations}},
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url = {https://zipcheckup.com/water-system/il0311890/}
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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
Merrionette Park (EPA ID: IL0311890) - request the latest Consumer Confidence Report or ask about specific contaminants.