Limestone-walters Pwd
EPA ID: IL1430020 · 2,023 people served · 31 ZIP codes
Five years of EPA monitoring have produced no violations for Limestone-walters Pwd — the supplier serving 2,023 residents has kept every contaminant level within federal limits, a result that places it among the top-performing utilities for systems with a service population of comparable size.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Limestone-walters Pwd Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Limestone-walters Pwd serves a community with a median household income of $59,504 and an estimated 133,110 residents across its service area. Approximately 71% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 31% 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?
Limestone-walters Pwd'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.
About 2% of homes in Peoria County, Illinois rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 155 detections recorded. 31 exceed federal EPA limits (4 ppt for PFOA/PFOS).
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
Limestone-walters Pwd (EPA ID: IL1430020) is a community water system in Illinois that serves approximately 2,023 people from groundwater sources.
This system provides water to 31 ZIP codes across 3 communities.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
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: 5 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 26 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
This system serves 31 ZIP codes:
61533 · 61547 · 61601 · 61602 · 61603 61604 · 61605 · 61606 · 61607 · 61612 61613 · 61614 · 61615 · 61625 · 61629 61630 · 61633 · 61634 · 61636 · 61637 61638 · 61639 · 61641 · 61643 · 61650 61651 · 61652 · 61653 · 61654 · 61655 61656
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Limestone-walters Pwd (IL1430020) on EPA.gov.
Frequently Asked Questions
Is Limestone-walters Pwd water safe to drink?
Based on EPA records, Limestone-walters Pwd has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Limestone-walters Pwd serve?
Limestone-walters Pwd serves approximately 2,023 people across 31 ZIP codes in Illinois.
Where does Limestone-walters Pwd get its water?
The primary water source is groundwater.
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.