Coal City
EPA ID: IL0630200 · 5,749 people served · 4 ZIP codes
ZipCheckup's reading of EPA records for Coal City (IL0630200): 3 violations recorded with unresolved status in the SDWIS data used. In EPA records, Coal City has 3 violations listed as unresolved, with the utility supplying water to approximately 5,749 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Coal City Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Coal City have a median household income of $81,733 and about 33,904 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 55% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Coal City's water is classified in EPA records as a groundwater source. 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.
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
Coal City (EPA ID: IL0630200) is a community water system in Illinois that serves approximately 5,749 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: 14 resolved, 0 archived, 0 addressed, and 3 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 |
|---|---|---|---|
| January 1, 2026 | Lead and Copper Rule | Non-health-based | Unaddressed (current) |
| September 1, 2025 | Public Notice | Non-health-based | Resolved |
| July 2, 2025 | LEAD AND COPPER RULE REVISIONS | Non-health-based | Unaddressed (current) |
| July 1, 2025 | Consumer Confidence Rule | Non-health-based | Unaddressed (current) |
| October 17, 2024 | LEAD AND COPPER RULE REVISIONS | Health-based | Resolved |
| July 1, 2024 | Consumer Confidence Rule | Non-health-based | Resolved |
| January 18, 2022 | Public Notice | Non-health-based | Resolved |
| October 14, 2021 | Public Notice | Non-health-based | Resolved |
| October 14, 2021 | Public Notice | Non-health-based | Resolved |
| July 1, 2021 | Chlorine | Non-health-based | Resolved |
| July 1, 2021 | Combined Radium (-226 and -228) | Health-based | Resolved |
| May 26, 2021 | Public Notice | Non-health-based | Resolved |
| May 5, 2021 | Public Notice | Non-health-based | Resolved |
| April 1, 2021 | Combined Radium (-226 and -228) | Health-based | Resolved |
| March 27, 2021 | Public Notice | Non-health-based | Resolved |
| March 3, 2021 | Public Notice | Non-health-based | Resolved |
| January 1, 2021 | Combined Radium (-226 and -228) | Health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Public Notice | Other (notice or report rule) | 8 | No |
| Combined Radium (-226 and -228) | MCL Violation | 3 | Yes |
| LEAD AND COPPER RULE REVISIONS | Treatment Technique, Monitoring & Reporting | 2 | Yes |
| Consumer Confidence Rule | Other (notice or report rule) | 2 | No |
| Public Notice | Monitoring & Reporting | 1 | No |
| Chlorine | Monitoring & Reporting | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| Below the reporting limit | No | 2026-06-30 |
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
4 of 4 ZIP records with known zones are in EPA Radon Zone 1.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
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 available EPA compliance records for Coal City (IL0630200) on EPA.gov.
Frequently Asked Questions
Is Coal City water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 3 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 Coal City serve?
Coal City serves approximately 5,749 people across 4 ZIP codes in Illinois.
Where does Coal City get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: No PFAS Reported Above Reporting Levels
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were reported above UCMR5 minimum reporting levels.
EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
- #19 / 50 Highest Exposure Burden (Illinois)
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Coal City (IL): 4 Health Violations. https://zipcheckup.com/water-system/il0630200/
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url = {https://zipcheckup.com/water-system/il0630200/}
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What You Can Do
Test your water
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Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Coal City (EPA ID: IL0630200) - request the latest Consumer Confidence Report or ask about specific contaminants.