Pewaukee City Water and Sewer Utility
EPA ID: WI2680214 · 8,671 people served · 4 ZIP codes
ZipCheckup's reading of EPA records for Pewaukee City Water and Sewer Utility (WI2680214): 2 violations recorded with unresolved status in the SDWIS data used. Looking at the EPA enforcement file for Pewaukee City Water and Sewer Utility, 2 violations are listed as unresolved as of its reporting date; the utility's service area includes approximately 8,671 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Pewaukee City Water and Sewer Utility Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Pewaukee City Water and Sewer Utility have a median household income of $93,045 and about 117,278 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 55% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Pewaukee City Water and Sewer Utility'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.
Superfund Proximity Note: This service area ranks in the 70th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 34 detections recorded. 9 detections are above the level of a federal PFAS MCL (4 ppt for PFOA and PFOS), with compliance required from 2029.
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
Pewaukee City Water and Sewer Utility (EPA ID: WI2680214) is a community water system in Wisconsin that serves approximately 8,671 people from groundwater sources.
This system provides water to 4 ZIP codes across 3 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 3 resolved, 10 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
| Date | Contaminant | Type | Status |
|---|---|---|---|
| January 1, 2026 | Gross Alpha | Health-based | Archived |
| October 1, 2025 | Gross Alpha | Health-based | Archived |
| August 18, 2025 | Public Notice | Non-health-based | Resolved |
| July 1, 2025 | Gross Alpha | Health-based | Archived |
| April 1, 2025 | Gross Alpha | Health-based | Archived |
| March 3, 2025 | Public Notice | Non-health-based | Resolved |
| January 1, 2025 | Gross Alpha | Health-based | Archived |
| November 18, 2024 | Public Notice | Non-health-based | Unaddressed (current) |
| October 1, 2024 | Gross Alpha | Health-based | Archived |
| August 29, 2024 | Public Notice | Non-health-based | Resolved |
| July 16, 2024 | Public Notice | Non-health-based | Unaddressed (current) |
| July 1, 2024 | Gross Alpha | Health-based | Archived |
| April 1, 2024 | Gross Alpha | Health-based | Archived |
| January 1, 2024 | Gross Alpha | Health-based | Archived |
| October 1, 2023 | Gross Alpha | Health-based | Archived |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Gross Alpha | MCL Violation | 10 | Yes |
| Public Notice | Other (notice or report rule) | 5 | No |
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.
Treatment options (verify a product is certified to reduce this contaminant): reverse osmosis, ion exchange, lime softening. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0026 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.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
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 Pewaukee City Water and Sewer Utility (WI2680214) on EPA.gov.
Frequently Asked Questions
Is Pewaukee City Water and Sewer 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 Pewaukee City Water and Sewer Utility serve?
Pewaukee City Water and Sewer Utility serves approximately 8,671 people across 4 ZIP codes in Wisconsin.
Where does Pewaukee City Water and Sewer Utility get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Sample Above an EPA MCL Value or State Standard
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). One or more PFAS measurements were above the level of the EPA MCL for that compound (April 2024 rule, which takes effect in 2029) or above an applicable state drinking-water standard; a monitoring result above that level is not by itself a violation.
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 →
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Pewaukee City Water and Sewer Utility: 10 Health Violations. https://zipcheckup.com/water-system/wi2680214/
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title = {{Pewaukee City Water and Sewer Utility: 10 Health Violations}},
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url = {https://zipcheckup.com/water-system/wi2680214/}
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Pewaukee City Water and Sewer Utility (EPA ID: WI2680214) - request the latest Consumer Confidence Report or ask about specific contaminants.