What environmental databases are included?

This page aggregates data from eight EPA databases: Safe Drinking Water (SDWIS), Superfund/NPL sites, Toxic Release Inventory (TRI), Air Quality Index (AQI), Leaking Underground Storage Tanks (LUST), NPDES water discharge permits, RCRA hazardous waste, and Brownfields.

What does the Air Quality Index (AQI) mean?

AQI is measured on a scale from 0 to 500. Values under 50 are 'Good,' 51-100 is 'Moderate,' and above 100 is 'Unhealthy for Sensitive Groups.' AQI is measured at the county level since air quality monitoring stations are sparse. Your town shares its county's AQI reading.

What is a Superfund site?

A Superfund site is a location contaminated by hazardous waste that has been placed on the EPA's National Priorities List (NPL) for long-term cleanup. These sites pose serious risks to human health and the environment. Cleanup can take decades and cost hundreds of millions of dollars.

Mukwonago, WI Water Quality, EPA Sites & Air Quality Data

Environmental Reporti

Water Systemsi

4community / 57 total

Water Violationsi

TRI Facilitiesi

Active NPDESi

10/ 12 total

Drinking Wateri

SDWIS

Public water systems registered to serve this area. Community systems (CWS) provide water to residents year-round. Transient systems serve places like gas stations or restaurants. Violations indicate a system failed to meet federal drinking water standards.

Community Systemsi

Active Systemsi

Recent Violationsi

Transient (40)

Non-Transient (6)

Community (4)

Recent Violations (Last 5 Years)

NORRIS INC

14 violationsLatest: 2025-12-20

EPA

HEAVEN CITY

5 violationsLatest: 2024-06-01

EPA

Historical Violations (Over 5 Years Ago)

MUKWONAGO WATERWORKS

4 violationsLatest: 2012-01-01

EPA

Toxic Release Inventory (TRI)i

TRI

Factories, refineries, and other industrial facilities that use or store hazardous chemicals are required to report their releases annually to the EPA. Being listed here does not mean a violation occurred — it means the facility is transparently tracking its chemical usage.

Reporting Facilitiesi

With Chemical Datai

UNIVERSAL ELECTRONICS II740 SWAN DR1 chemical|TRI

Wastewater & Stormwater Permits (NPDES)i

NPDES

Under the Clean Water Act, any facility that discharges wastewater or stormwater into rivers, lakes, or streams must hold an NPDES permit. "Effective" means the permit is currently active and the facility is authorized to discharge under its permit conditions.

Active Permitsi

Expired / Terminatedi

THE POINTE APARTMENTS, LLCMAIN ST. SOUTH OF THE BRIDGE OVER PHANTOM LAKEMinor Discharge|EPA

BIELINSKI HOMES, LLCIMMEDIATELY NORTH OF WESTLAWN AVENUEMinor Discharge|EPA

BIELINSKI HOMES, LLCCHAPMAN FARM BLVDMinor Discharge|EPA

POINT REAL ESTATEWEST OF AUGUSTA DR. AND PINEHURST DR.Minor Discharge|EPA

VILLAGE OF MUKWONAGOTERMINUS OF EAST WOLF RUN IN THE VILLAGE OF MUKWONMinor Discharge|EPA

PROHEALTH WAUKESHA MEMORIAL HOSPITAL - MUKWONAGO CAMPUS240 W MAPLE AVEMinor Discharge|EPA

MUKWONAGO WASTEWATER TREATMENT PLANT1200 HOLZ ROADMajor Discharge|EPA

BEILINSKI, LLC SITENWC OF CTH NN & CTH EEMinor Discharge|EPA

GROWTH WERKS, LLCMUKWONAGO DR & BAY VIEW ROADMinor Discharge|EPA

GOODWILL INDUSTRIES OF SE WISCONSIN INCSOUTH CORNER OF ARROWHEAD DRIVE AND STH 83Minor Discharge|EPA

Nearest Hazardous Waste Disposal Facilitiesi

RCRA

These are the closest licensed facilities where hazardous waste (chemicals, solvents, industrial byproducts) can be legally treated, stored, or disposed of.

SAFETY-KLEEN SYSTEMS WAUKESHA (WAU)WAUKESHA9.3 mi|EPA

EV Charging & Alternative Fuel Stationsi

AFDC

Publicly listed alternative fuel and EV charging stations within the municipality. Data from the U.S. Department of Energy. "Open" stations are currently available for use; "Planned" stations are approved but not yet operational.

Total Stationsi