Rockdale
EPA ID: IL1970850 · 2,012 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Rockdale (IL1970850): 6 unresolved EPA violations on record. Federal compliance records for Rockdale list 6 open violations that have not yet been resolved - the utility serves approximately 2,012 people, and each outstanding finding remains logged and active in the EPA enforcement database.
Data: EPA SDWIS
Service Area Map
Coverage area for Rockdale Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Rockdale serves a community with a median household income of $63,570 and an estimated 19,446 residents across its service area. Approximately 83% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Rockdale'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 70th percentile nationally for proximity to wastewater discharge points.
Infrastructure Risk
Detected Contaminants
How Rockdale compares to EPA limits
What This Means For You
Surface Water Treatment Rule at 5 mg/L exceeds the EPA maximum of mg/L.
Lead and Copper Rule at 3 mg/L exceeds the EPA maximum of mg/L.
Contaminant 2326 at 1 mg/L exceeds the EPA maximum of mg/L.
Stage 1 DBP 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
Rockdale (EPA ID: IL1970850) is a community water system in Illinois that serves approximately 2,012 people from groundwater sources.
This system serves ZIP code 60436 in Joliet.
Violation History
Status breakdown for accepted records with record years 2021-2026: 8 resolved, 0 archived, 0 addressed, and 6 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 |
|---|---|---|---|
| October 1, 2025 | Gross Beta | Non-health-based | Resolved |
| July 1, 2025 | Gross Beta | Non-health-based | Resolved |
| July 1, 2025 | Surface Water Treatment Rule | Non-health-based | Unaddressed (current) |
| October 11, 2024 | Lead and Copper Rule | Non-health-based | Resolved |
| July 1, 2024 | Surface Water Treatment Rule | Non-health-based | Unaddressed (current) |
| July 1, 2023 | Contaminant 2326 | Non-health-based | Resolved |
| July 1, 2023 | Surface Water Treatment Rule | Non-health-based | Unaddressed (current) |
| April 20, 2023 | Lead and Copper Rule | Non-health-based | Unaddressed (current) |
| September 29, 2022 | Stage 1 DBP Rule | Non-health-based | Unaddressed (current) |
| July 1, 2022 | Surface Water Treatment Rule | Non-health-based | Resolved |
| January 13, 2022 | Lead and Copper Rule | Non-health-based | Unaddressed (current) |
| January 1, 2022 | Gross Beta | Non-health-based | Resolved |
| October 1, 2021 | Gross Beta | Non-health-based | Resolved |
| July 1, 2021 | 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 | 5 | No |
| Gross Beta | Radionuclides | 4 | No |
| Lead and Copper Rule | Treatment Failure | 3 | No |
| Contaminant 2326 | Other Violation | 1 | No |
| Stage 1 DBP 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 |
|---|---|---|
| 0.00125 mg/L | No | N/A |
The accepted LCR snapshot contains 1 reported copper action-level exceedance record for this PWSID. The source does not provide a verified copper level for publication.
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.
- 60436 - Joliet
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Rockdale (IL1970850) on EPA.gov.
Frequently Asked Questions
Is Rockdale water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 6 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 Rockdale serve?
Rockdale serves approximately 2,012 people across 1 ZIP code in Illinois.
Where does Rockdale get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Rockdale (IL): 14 EPA Violations. https://zipcheckup.com/water-system/il1970850/
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author = {{ZipCheckup}},
title = {{Rockdale (IL): 14 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/il1970850/}
}
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
Rockdale (EPA ID: IL1970850) - request the latest Consumer Confidence Report or ask about specific contaminants.