St Nazianz Waterworks
EPA ID: WI4360433 · 705 people served · 4 ZIP codes
ZipCheckup's reading of EPA SDWIS for St Nazianz Waterworks (WI4360433): 2 EPA violations in the last five years. Five years tracked: St Nazianz Waterworks had 2 violations, all cleared, 705 served.
Data: EPA SDWIS
Service Area Map
Coverage area for St Nazianz Waterworks Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The St Nazianz Waterworks serves a community with a median household income of $81,170 and an estimated 53,680 residents across its service area. Approximately 70% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
St Nazianz Waterworks's water is pumped from underground aquifers. 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
Detected Contaminants
How St Nazianz Waterworks compares to EPA limits
What This Means For You
Haloacetic Acids (HAA5) at 1 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
Total Trihalomethanes (TTHM) at 1 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Haloacetic Acids (HAA5) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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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
St Nazianz Waterworks (EPA ID: WI4360433) is a community water system in Wisconsin that serves approximately 705 people from groundwater sources.
This system provides water to 4 ZIP codes across 4 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 2 resolved, 0 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, 2021 | Haloacetic Acids (HAA5) | Non-health-based | Resolved |
| January 1, 2021 | Total Trihalomethanes (TTHM) | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 1 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0014 mg/L | No | N/A |
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
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
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: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
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 the full compliance record for St Nazianz Waterworks (WI4360433) on EPA.gov.
Frequently Asked Questions
Is St Nazianz Waterworks water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for St Nazianz Waterworks; 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 St Nazianz Waterworks serve?
St Nazianz Waterworks serves approximately 705 people across 4 ZIP codes in Wisconsin.
Where does St Nazianz Waterworks get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). St Nazianz Waterworks (WI): 2 EPA Violations. https://zipcheckup.com/water-system/wi4360433/
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title = {{St Nazianz Waterworks (WI): 2 EPA Violations}},
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url = {https://zipcheckup.com/water-system/wi4360433/}
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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
St Nazianz Waterworks (EPA ID: WI4360433) - request the latest Consumer Confidence Report or ask about specific contaminants.