Janesville Water Utility

ZipCheckup's reading of EPA SDWIS for Janesville Water Utility (WI1540127): no EPA violations recorded in the last five years. In every reporting cycle over the past five years, Janesville Water Utility has come through without a single EPA violation - a consistent performance across the full service population of approximately 64,415 residents that reflects both well-maintained infrastructure and reliable operational oversight.

Data: EPA SDWIS

System Overview

Janesville Water Utility (EPA ID: WI1540127) is a community water system in Wisconsin that serves approximately 64,415 people from groundwater sources.

This system provides water to 6 ZIP codes across 4 communities.

ZIP-Area Home Safety Context: C (66/100)

This is the average Home Safety Score for 3 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:

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.

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 WI or modeled from parcel and building-footprint data.

• 53501 - Afton
• 53511 - Beloit
• 53545 - Janesville
• 53546 - Janesville
• 53548 - Janesville
• 53563 - Milton

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Janesville Water Utility (WI1540127) on EPA.gov.

Frequently Asked Questions

Is Janesville Water Utility water safe to drink?

The accepted 2026Q2 ECHO snapshot contains zero violation records for Janesville Water Utility 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 Janesville Water Utility serve?

Janesville Water Utility serves approximately 64,415 people across 6 ZIP codes in Wisconsin.

Where does Janesville Water Utility get its water?

The primary water source is groundwater.

@misc{zipcheckup-water-system-wi1540127,
  author = {{ZipCheckup}},
  title  = {{Janesville Water Utility, WI: Serves 64K People}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/wi1540127/}
}