Cascade Waterworks
EPA ID: WI4600436 · 719 people served · 3 ZIP codes
ZipCheckup's reading of EPA records for Cascade Waterworks (WI4600436): 3 violations on record since 2021. Past violations at Cascade Waterworks total 3, all marked resolved; it supplies 719 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Cascade Waterworks Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Cascade Waterworks have a median household income of $91,406 and about 20,468 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 68% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Cascade 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 63th 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
System Overview
Cascade Waterworks (EPA ID: WI4600436) is a community water system in Wisconsin that serves approximately 719 people from groundwater sources.
This system provides water to 3 ZIP codes across 3 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 0 resolved, 3 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 | Radium-228 | Non-health-based | Archived |
| January 1, 2026 | Combined Radium (-226 and -228) | Non-health-based | Archived |
| January 1, 2026 | Radium-226 | Non-health-based | Archived |
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) | Monitoring & Reporting | 1 | No |
| Radium-226 | Monitoring & Reporting | 1 | No |
| Radium-228 | 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 |
|---|---|---|
| 0.0018 mg/L | No | 2024-12-31 |
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.
Radon Risk in Service Area
3 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 Cascade Waterworks (WI4600436) on EPA.gov.
Frequently Asked Questions
Is Cascade Waterworks water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Cascade Waterworks; its 3 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Cascade Waterworks serve?
Cascade Waterworks serves approximately 719 people across 3 ZIP codes in Wisconsin.
Where does Cascade Waterworks get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Cascade Waterworks (WI): 3 EPA Violations. https://zipcheckup.com/water-system/wi4600436/
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author = {{ZipCheckup}},
title = {{Cascade Waterworks (WI): 3 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/wi4600436/}
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What You Can Do
Test your water
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Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Cascade Waterworks (EPA ID: WI4600436) - request the latest Consumer Confidence Report or ask about specific contaminants.