Mendota Mental Health Inst
EPA ID: WI1130235 · 2,787 people served · 2 ZIP codes
ZipCheckup's reading of EPA records for Mendota Mental Health Inst (WI1130235): no drinking-water violations recorded since 2021. Mendota Mental Health Inst is listed without violations in federal records, across a service area of 2,787 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Mendota Mental Health Inst Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Mendota Mental Health Inst have a median household income of $94,775 and about 67,807 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 52% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Mendota Mental Health Inst'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. 2 detections recorded.
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
Mendota Mental Health Inst (EPA ID: WI1130235) is a community water system in Wisconsin that serves approximately 2,787 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.007 mg/L | No | 2025-09-30 |
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.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Mendota Mental Health Inst (WI1130235) on EPA.gov.
Frequently Asked Questions
Is Mendota Mental Health Inst water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Mendota Mental Health Inst 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 Mendota Mental Health Inst serve?
Mendota Mental Health Inst serves approximately 2,787 people across 2 ZIP codes in Wisconsin.
Where does Mendota Mental Health Inst get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Mendota Mental Health Inst Water Quality Report, WI. https://zipcheckup.com/water-system/wi1130235/
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title = {{Mendota Mental Health Inst Water Quality Report, WI}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/wi1130235/}
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