Colfax Water Supply

ZipCheckup's reading of EPA records for Colfax Water Supply (IA5009056): no drinking-water violations recorded since 2021. Nothing in the federal violation file is listed against Colfax Water Supply, a system that provides water to roughly 2,305 people.

Data: EPA SDWIS

System Overview

Colfax Water Supply (EPA ID: IA5009056) is a community water system in Iowa that serves approximately 2,305 people from groundwater sources.

This system provides water to 2 ZIP codes across 2 communities.

ZIP-Area Home Safety Context: C (67/100)

This is the average Home Safety Score for 1 of 2 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:

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

2 of 2 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.

• 50054 - Colfax
• 50228 - Prairie City

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Colfax Water Supply (IA5009056) on EPA.gov.

Frequently Asked Questions

Is Colfax Water Supply water safe to drink?

The accepted 2026Q2 ECHO snapshot contains zero violation records for Colfax 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 Colfax Water Supply serve?

Colfax Water Supply serves approximately 2,305 people across 2 ZIP codes in Iowa.

Where does Colfax Water Supply get its water?

The primary water source is groundwater.

@misc{zipcheckup-water-system-ia5009056,
  author = {{ZipCheckup}},
  title  = {{Colfax Water Supply Water Quality Report, IA}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/ia5009056/}
}