Lewistown
EPA ID: IL0570600 · 2,400 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Lewistown (IL0570600): no drinking-water violations recorded since 2021. Nothing in the federal violation file is listed against Lewistown, a system that provides water to roughly 2,400 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Lewistown Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Lewistown have a median household income of $65,529 and about 3,306 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 73% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Lewistown'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.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Illinois
System Overview
Lewistown (EPA ID: IL0570600) is a community water system in Illinois that serves approximately 2,400 people from groundwater sources.
This system serves ZIP code 61542 in Lewistown.
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.
- 61542 - Lewistown
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Lewistown (IL0570600) on EPA.gov.
Frequently Asked Questions
Is Lewistown water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Lewistown 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 Lewistown serve?
Lewistown serves approximately 2,400 people across 1 ZIP code in Illinois.
Where does Lewistown get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Lewistown Water Quality Report, IL. https://zipcheckup.com/water-system/il0570600/
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author = {{ZipCheckup}},
title = {{Lewistown Water Quality Report, IL}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/il0570600/}
}