Granville
EPA ID: IL1550050 · 1,359 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Granville (IL1550050): no drinking-water violations recorded since 2021. Zero violations are listed in EPA monitoring data for Granville; a count of records like this is not a water-quality test for the 1,359 residents it serves.
Data: EPA SDWIS
Service Area Map
Coverage area for Granville Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Granville have a median household income of $71,071 and about 2,102 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 82% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Granville'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.
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
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
Granville (EPA ID: IL1550050) is a community water system in Illinois that serves approximately 1,359 people from groundwater sources.
This system serves ZIP code 61326 in Granville.
Violation History
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 | 2025-12-31 |
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
1 of 1 ZIP records with known zones is 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.
- 61326 - Granville
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Granville (IL1550050) on EPA.gov.
Frequently Asked Questions
Is Granville water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Granville 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 Granville serve?
Granville serves approximately 1,359 people across 1 ZIP code in Illinois.
Where does Granville get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Granville Water Quality Report, IL. https://zipcheckup.com/water-system/il1550050/
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author = {{ZipCheckup}},
title = {{Granville Water Quality Report, IL}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/il1550050/}
}