Allison Water Supply
EPA ID: IA1203026 · 966 people served · 3 ZIP codes
ZipCheckup's reading of EPA records for Allison Water Supply (IA1203026): no drinking-water violations recorded since 2021. Federal SDWIS data returns no violation records for Allison Water Supply, the supplier serving 966 residents - a statement about the EPA file rather than a measurement of contaminant levels in the water.
Data: EPA SDWIS
Service Area Map
Coverage area for Allison Water Supply Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Allison Water Supply have a median household income of $66,181 and about 3,782 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 87% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Allison Water Supply'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 Iowa
System Overview
Allison Water Supply (EPA ID: IA1203026) is a community water system in Iowa that serves approximately 966 people from groundwater sources.
This system provides water to 3 ZIP codes across 3 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0076 mg/L | No | 2024-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Allison Water Supply (IA1203026) on EPA.gov.
Frequently Asked Questions
Is Allison Water Supply water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Allison 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 Allison Water Supply serve?
Allison Water Supply serves approximately 966 people across 3 ZIP codes in Iowa.
Where does Allison Water Supply get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Allison Water Supply Water Quality Report, IA. https://zipcheckup.com/water-system/ia1203026/
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