Twin Lakes Complex
EPA ID: WI2300619 · 50 people served · 3 ZIP codes
ZipCheckup's reading of EPA records for Twin Lakes Complex (WI2300619): no drinking-water violations recorded since 2021. Checked against the EPA violation database, Twin Lakes Complex returns no entries for its service territory of 50 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Twin Lakes Complex Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Twin Lakes Complex have a median household income of $90,343 and about 45,909 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 64% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Twin Lakes Complex'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.
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
Twin Lakes Complex (EPA ID: WI2300619) is a community water system in Wisconsin that serves approximately 50 people from groundwater sources.
This system provides water to 3 ZIP codes across 3 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0002 mg/L | No | 2024-09-30 |
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
1 of 3 ZIP records with known zones is in EPA Radon Zone 1. 2 of 3 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 Twin Lakes Complex (WI2300619) on EPA.gov.
Frequently Asked Questions
Is Twin Lakes Complex water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Twin Lakes Complex 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 Twin Lakes Complex serve?
Twin Lakes Complex serves approximately 50 people across 3 ZIP codes in Wisconsin.
Where does Twin Lakes Complex get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Twin Lakes Complex Water Quality Report, WI. https://zipcheckup.com/water-system/wi2300619/
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title = {{Twin Lakes Complex Water Quality Report, WI}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/wi2300619/}
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