Current Noncompliance WI 1 HEALTH VIOLATION

Muskego Water Utility

EPA ID: WI2681741 ยท 8,150 people served ยท 1 ZIP code

ZipCheckup's reading of EPA SDWIS for Muskego Water Utility (WI2681741): 2 unresolved EPA violations on record. In the most recent EPA reporting cycle, Muskego Water Utility carried 2 violations still marked as unresolved - each remains active in the federal enforcement ledger while the utility continues operations for its service population of approximately 8,150 people across the area it supplies.

Data: EPA SDWIS

C ยท 60
Avg Safety Score
8,150
People Served
1
ZIP Code Served
5
Violations (5yr)
Groundwater
Water Source
0.00389 mg/L
Max Lead Level
Zone 1
Radon Risk ยท High
4
Contaminants Flagged
$391K
Median Home Value in Service Area

Service Area Map

Coverage area for Muskego Water Utility Source: EPA SDWIS service area boundaries.

Service area boundary - Grade C

Service Area Demographics

$113,125
Median Household Income
26,142
Service Area Population
2%
Disadvantaged Population
20th
Poverty Percentile
20th
Energy Burden Percentile
49%
Pre-1986 Housing

The Muskego Water Utility serves a community with a median household income of $113,125 and an estimated 26,142 residents across its service area. Approximately 49% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.

๐Ÿ’ง Where Does Your Water Come From?

Groundwater

Muskego Water Utility'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.

Elevated Risk
Source Contamination Risk
30th
Wastewater Discharge Proximity
70th
Superfund Site Proximity

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

43 yr
Avg Pipe Age
Copper
Pipe Material
27 yr
Est. Remaining Life
Moderate Wear
Decay Status
Installed 61% of expected lifespan used End of life

Detected Contaminants

How Muskego Water Utility compares to EPA limits

What This Means For You

Lead and Copper Rule at 2 mg/L exceeds the EPA maximum of mg/L.

Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.

Stage 2 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.

Revised Total Coliform Rule at 1 presence exceeds the EPA maximum of presence.

Comparable Water Systems

Similar-sized systems in Wisconsin

F 38 violations
Mukwonago Waterworks
8,190 people
C 0 violations
2 violations
Waupun Utilities
8,056 people
C 0 violations
Ashland Water Utility
8,000 people
B 13 violations

Estimated Remediation Costs

Average estimated costs across ZIP codes served by this system

Flood Insurance Radon Mitigation Water Filtration
Flood Insurance $1,800
Radon Mitigation $1,200
Water Filtration $300
Total Estimated Cost $3,300

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.

Cost of Inaction

If water quality issues in this service area are not addressed, the estimated financial impact per household is:

Estimated Healthcare Costs $1,000

Annual per household (CDC est.)

Estimated Cumulative Cost Per Household

5 years
$5,000
10 years
$10,000
20 years
$20,000

Compare: Estimated remediation cost is $3,300 (one-time) vs. $10,000 in estimated inaction costs over 10 years.

Estimates based on published EPA, CDC, and peer-reviewed research. Individual costs vary by household size, property, and health factors. These are conservative lower-bound estimates intended for awareness, not financial advice.

System Overview

Muskego Water Utility (EPA ID: WI2681741) is a community water system in Wisconsin that serves approximately 8,150 people from groundwater sources.

This system serves ZIP code 53150 in Muskego.

ZIP-Area Home Safety Context: C (60/100)

This is the average Home Safety Score for 1 of 1 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.

Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.

Violation History

2 current noncompliance records in the accepted 2026Q2 snapshot; none are classified as health-based in this evidence.

Status breakdown for accepted records with record years 2021-2026: 3 resolved, 0 archived, 0 addressed, and 2 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
October 17, 2024 Stage 2 DBP Rule Health-based Resolved
October 17, 2024 Lead and Copper Rule Non-health-based Unaddressed (current)
January 1, 2024 Stage 1 DBP Rule Non-health-based Resolved
July 1, 2023 Lead and Copper Rule Non-health-based Unaddressed (current)
April 1, 2023 Revised Total Coliform Rule Non-health-based Resolved

Contaminants Detected

The following contaminants have been flagged in EPA records for this water system:

Contaminant Category Violations Health-Based
Lead and Copper Rule Treatment Failure 2 No
Stage 1 DBP Rule Treatment Failure 1 No
Stage 2 DBP Rule Treatment Failure 1 Yes
Revised Total Coliform Rule Microbiological 1 No

Lead & Copper

EPA Lead and Copper Rule evidence attributed directly to this water system:

Lead Level Exceeds Action Level Sample Date
0.00389 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 1 (High 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 $20โ€“$50 (DIY kit) ยท Professional inspection: $150โ€“$400

Find the Right Water Filter

Free tip: Let cold water run for 2 minutes before drinking โ€” 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 Muskego Water Utility (WI2681741) on EPA.gov.

Frequently Asked Questions

Is Muskego Water Utility water safe to drink?

The accepted 2026Q2 ECHO snapshot shows 2 current noncompliance records and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.

How many people does Muskego Water Utility serve?

Muskego Water Utility serves approximately 8,150 people across 1 ZIP code in Wisconsin.

Where does Muskego Water Utility get its water?

The primary water source is groundwater.

Federal UCMR5 PFAS Monitoring: Tested Clean

This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.

Samples collected
464

Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.

Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) โ€” per-system federal sampling, 2023โ€“2025. EPA UCMR5 monitoring program โ†’

Understand PFAS health context and filtration โ†’

How Water Systems Appear in Rankings

Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.

Frequently Asked Questions

Is water from Muskego Water Utility safe to drink?
Muskego Water Utility has a C safety grade based on 5 recorded violations. Some contaminants may exceed EPA limits - independent testing is recommended.
What contaminants are in Muskego Water Utility's water?
Detected contaminants include Lead and Copper Rule, Stage 1 DBP Rule, Stage 2 DBP Rule, Revised Total Coliform Rule. Each is compared against EPA maximum contaminant levels (MCLs) in the detailed breakdown above.
Should I use a water filter?
Given 4 contaminants above EPA limits, a certified water filter can provide an extra layer of protection. The best type depends on specific contaminants in your water.
How many people does Muskego Water Utility serve?
Muskego Water Utility serves approximately 8,150 people with drinking water across 1 ZIP code.
What is Muskego Water Utility's water source?
Muskego Water Utility draws water from groundwater sources. Source type affects which contaminants are most likely to be present.
Is there lead in Muskego Water Utility's water?
The maximum detected lead level is 0.00389 mg/L. This is within EPA action level guidelines.
What is the demographic profile of Muskego Water Utility's service area?
The Muskego Water Utility service area has a median household income of $113,125. Demographic data is sourced from the U.S. Census Bureau and EPA EJScreen.
Where does Muskego Water Utility get its water?
Muskego Water Utility'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. Based on the exported violation history and environmental factors, the source contamination risk is classified as elevated.

How to cite this page

APA ZipCheckup. (n.d.). Muskego Water Utility (WI): 1 Health Violation. https://zipcheckup.com/water-system/wi2681741/
BibTeX
@misc{zipcheckup-water-system-wi2681741,
  author = {{ZipCheckup}},
  title  = {{Muskego Water Utility (WI): 1 Health Violation}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/wi2681741/}
}

What You Can Do

1

Test your water

Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter โ†’

2

Check your specific ZIP code

Water quality can vary within a system. View nearest ZIP report โ†’

3

Contact your utility

Muskego Water Utility (EPA ID: WI2681741) - request the latest Consumer Confidence Report or ask about specific contaminants.

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