Waukesha Water Utility

ZipCheckup's reading of EPA SDWIS for Waukesha Water Utility (WI2680238): 2 unresolved EPA violations on record. Looking at the EPA enforcement file for Waukesha Water Utility, 2 violations are listed as unresolved - those findings cover the utility's service area of approximately 70,718 people and remain open in the federal compliance system, awaiting formal corrective action documentation.

Data: EPA SDWIS

System Overview

Waukesha Water Utility (EPA ID: WI2680238) is a community water system in Wisconsin that serves approximately 70,718 people from surface water sources.

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

ZIP-Area Home Safety Context: F (39/100)

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

Status breakdown for accepted records with record years 2021-2026: 73 resolved, 0 archived, 0 addressed, and 2 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.

Recent Violations

Contaminants Detected

The following contaminants have been flagged in EPA records for this water system:

Health Risk Details

Gross Alpha Particle Activity (EPA limit: pCi/L)

Increased cancer risk from radioactive particles At-risk groups: long-term residents in areas with uranium or radium-rich geology, people on private wells in western US.

Removal methods: reverse osmosis, ion exchange (anion exchange for radium), lime softening. Find the right filter →

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.

• 53072 - Pewaukee
• 53146 - New Berlin
• 53183 - Wales
• 53186 - Waukesha
• 53188 - Waukesha
• 53189 - Waukesha

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Waukesha Water Utility (WI2680238) on EPA.gov.

Frequently Asked Questions

Is Waukesha Water Utility water safe to drink?

The accepted 2026Q2 ECHO snapshot shows 2 current noncompliance records and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.

How many people does Waukesha Water Utility serve?

Waukesha Water Utility serves approximately 70,718 people across 6 ZIP codes in Wisconsin.

Where does Waukesha Water Utility get its water?

The primary water source is surface water.

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  author = {{ZipCheckup}},
  title  = {{Waukesha Water Utility (WI): 60 Health Violations}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/wi2680238/}
}