Mosinee Waterworks
EPA ID: WI7370159 · 3,406 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Mosinee Waterworks (WI7370159): no EPA violations recorded in the last five years. Unlike many utilities its size, Mosinee Waterworks carries a violation-free five-year record - no EPA notices, no MCL exceedances, serving 3,406 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Mosinee Waterworks Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Mosinee Waterworks serves a community with a median household income of $94,609 and an estimated 18,994 residents across its service area. Approximately 46% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Mosinee Waterworks's water is pumped from underground aquifers. 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
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
Mosinee Waterworks (EPA ID: WI7370159) is a community water system in Wisconsin that serves approximately 3,406 people from groundwater sources.
This system serves ZIP code 54455 in Mosinee.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0022 mg/L | No | N/A |
The accepted LCR snapshot contains 1 reported copper action-level exceedance record for this PWSID. The source does not provide a verified copper level for publication.
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: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
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.
- 54455 - Mosinee
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Mosinee Waterworks (WI7370159) on EPA.gov.
Frequently Asked Questions
Is Mosinee Waterworks water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Mosinee Waterworks 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 Mosinee Waterworks serve?
Mosinee Waterworks serves approximately 3,406 people across 1 ZIP code in Wisconsin.
Where does Mosinee Waterworks get its water?
The primary water source is groundwater.
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.). Mosinee Waterworks Water Quality Report, WI. https://zipcheckup.com/water-system/wi7370159/
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title = {{Mosinee Waterworks Water Quality Report, WI}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/wi7370159/}
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