Twin Lakes Park Water Coop
EPA ID: WI2300151 · 150 people served · 2 ZIP codes
ZipCheckup's reading of EPA records for Twin Lakes Park Water Coop (WI2300151): 1 health-based violation recorded since 2021. While 2 violations did appear in Twin Lakes Park Water Coop's monitoring record, none is listed as unresolved; the utility serves approximately 150 residents. A closed violation record does not by itself establish compliance with every current EPA standard.
Data: EPA SDWIS
Service Area Map
Coverage area for Twin Lakes Park Water Coop Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Twin Lakes Park Water Coop have a median household income of $92,133 and about 16,858 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 Park Water Coop'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 Park Water Coop (EPA ID: WI2300151) is a community water system in Wisconsin that serves approximately 150 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 1 archived, 0 addressed, and 0 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 | Combined Radium (-226 and -228) | Health-based | Archived |
| July 2, 2025 | LEAD AND COPPER RULE REVISIONS | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Combined Radium (-226 and -228) | MCL Violation | 1 | Yes |
| LEAD AND COPPER RULE REVISIONS | Monitoring & Reporting | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0009 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.
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 Twin Lakes Park Water Coop (WI2300151) on EPA.gov.
Frequently Asked Questions
Is Twin Lakes Park Water Coop water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Twin Lakes Park Water Coop; its 2 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Twin Lakes Park Water Coop serve?
Twin Lakes Park Water Coop serves approximately 150 people across 2 ZIP codes in Wisconsin.
Where does Twin Lakes Park Water Coop get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Twin Lakes Park Water Coop (WI): 1 Health Violation. https://zipcheckup.com/water-system/wi2300151/
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author = {{ZipCheckup}},
title = {{Twin Lakes Park Water Coop (WI): 1 Health Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/wi2300151/}
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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
Twin Lakes Park Water Coop (EPA ID: WI2300151) - request the latest Consumer Confidence Report or ask about specific contaminants.