Mosinee Waterworks
EPA ID: WI7370159 · 3,406 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Mosinee Waterworks (WI7370159): no drinking-water violations recorded since 2021. Water monitoring for Mosinee Waterworks: no violations on record, 3,406 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Mosinee Waterworks Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Mosinee Waterworks have a median household income of $94,609 and about 18,994 residents live in those ZIP codes (Census; not the number of people this system supplies). 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 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
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 | 2023-09-30 |
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: 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.
- 54455 - Mosinee
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records 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.
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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