De Pere Waterworks Sa 1
EPA ID: WI4050453 · 25,660 people served · 2 ZIP codes
ZipCheckup's reading of EPA records for De Pere Waterworks Sa 1 (WI4050453): no drinking-water violations recorded since 2021. De Pere Waterworks Sa 1 is listed without violations in federal records, across a service area of 25,660 people.
Data: EPA SDWIS
Service Area Map
Coverage area for De Pere Waterworks Sa 1 Source: EPA SDWIS service area boundaries.
Service area boundary - average Home Safety grade of mapped ZIPs: B
Demographics of ZIP Codes Served
The ZIP codes associated with De Pere Waterworks Sa 1 have a median household income of $87,601 and about 87,251 residents live in those ZIP codes (Census; not the number of people this system supplies).
🌊 Where Does Your Water Come From?
De Pere Waterworks Sa 1's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Superfund Proximity Note: This service area ranks in the 80th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Wisconsin
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
De Pere Waterworks Sa 1 (EPA ID: WI4050453) is a community water system in Wisconsin that serves approximately 25,660 people from surface water sources.
This system provides water to 2 ZIP codes across 2 communities.
ZIP-Area Home Safety Context: B (80/100)
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:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0007 mg/L | No | 2023-09-30 |
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 2.
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 WI 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 De Pere Waterworks Sa 1 (WI4050453) on EPA.gov.
Frequently Asked Questions
Is De Pere Waterworks Sa 1 water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for De Pere Waterworks Sa 1 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 De Pere Waterworks Sa 1 serve?
De Pere Waterworks Sa 1 serves approximately 25,660 people across 2 ZIP codes in Wisconsin.
Where does De Pere Waterworks Sa 1 get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: No PFAS Reported Above Reporting Levels
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were reported above UCMR5 minimum reporting levels.
EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). De Pere Waterworks Sa 1, WI: Serves 26K People. https://zipcheckup.com/water-system/wi4050453/
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