Tiffin Water Supply
EPA ID: IA5288021 · 7,577 people served · 3 ZIP codes
ZipCheckup's reading of EPA records for Tiffin Water Supply (IA5288021): no drinking-water violations recorded since 2021. EPA data: Tiffin Water Supply - zero violation entries, 7,577 served.
Data: EPA SDWIS
Service Area Map
Coverage area for Tiffin Water Supply Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Tiffin Water Supply have a median household income of $105,517 and about 30,084 residents live in those ZIP codes (Census; not the number of people this system supplies).
💧 Where Does Your Water Come From?
Tiffin 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
Tiffin Water Supply (EPA ID: IA5288021) is a community water system in Iowa that serves approximately 7,577 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 |
|---|---|---|
| Below the reporting limit | No | 2023-12-31 |
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
3 of 3 ZIP records with known zones are 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 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 Tiffin Water Supply (IA5288021) on EPA.gov.
Frequently Asked Questions
Is Tiffin Water Supply water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Tiffin 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 Tiffin Water Supply serve?
Tiffin Water Supply serves approximately 7,577 people across 3 ZIP codes in Iowa.
Where does Tiffin Water Supply get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Tiffin Water Supply Water Quality Report, IA. https://zipcheckup.com/water-system/ia5288021/
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author = {{ZipCheckup}},
title = {{Tiffin Water Supply Water Quality Report, IA}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ia5288021/}
}