Wilton Water Supply
EPA ID: IA7078026 · 2,924 people served · 6 ZIP codes
ZipCheckup's reading of EPA SDWIS for Wilton Water Supply (IA7078026): no EPA violations recorded in the last five years. With a five-year violation-free history, Wilton Water Supply delivers safe water to 2,924 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Wilton Water Supply Source: EPA SDWIS service area boundaries.
Service area boundary - Grade C
Service Area Demographics
The Wilton Water Supply serves a community with a median household income of $75,286 and an estimated 41,146 residents across its service area. Approximately 80% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Wilton Water Supply'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 60th percentile nationally for proximity to wastewater discharge points.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 7 detections recorded. 2 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Comparable Water Systems
Similar-sized systems in Iowa
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
Wilton Water Supply (EPA ID: IA7078026) is a community water system in Iowa that serves approximately 2,924 people from groundwater sources.
This system provides water to 6 ZIP codes across 6 communities.
ZIP-Area Home Safety Context: C (67/100)
This is the average Home Safety Score for 1 of 6 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.006 mg/L | No | N/A |
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
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
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 IA or modeled from parcel and building-footprint data.
- 52720 - Atalissa
- 52760 - Moscow
- 52761 - Muscatine
- 52766 - Nichols
- 52776 - West Liberty
- 52778 - Wilton
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Wilton Water Supply (IA7078026) on EPA.gov.
Frequently Asked Questions
Is Wilton Water Supply water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Wilton Water Supply 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 Wilton Water Supply serve?
Wilton Water Supply serves approximately 2,924 people across 6 ZIP codes in Iowa.
Where does Wilton Water Supply get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Wilton Water Supply Water Quality Report, IA. https://zipcheckup.com/water-system/ia7078026/
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author = {{ZipCheckup}},
title = {{Wilton Water Supply Water Quality Report, IA}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ia7078026/}
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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
Wilton Water Supply (EPA ID: IA7078026) - request the latest Consumer Confidence Report or ask about specific contaminants.