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.

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

Environmental Reporti

Water Systemsi

1community / 19 total

Water Violationsi

TRI Facilitiesi

Active NPDESi

9/ 13 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 (16)

Non-Transient (2)

Community (1)

Recent Violations (Last 5 Years)

LANNON WATER UTILITY

2 violationsLatest: 2025-04-01

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

ALUMINUM FOUNDRY OF WISCONSIN LLC21020 W GOOD HOPE RD4 chemicals|TRI

CHEMRITE INDUSTRIES LLC19725 W EDGEWOOD 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

SAWALL DEVELOPMENTSOUTHEAST CORNER OF W. MAIN ST. AND CUSTER LN.Minor Discharge|EPA

BERG DEVELOPMENT, INC19704 W MAIN STMinor Discharge|EPA

OVERSTONE CONDOMINIUMS LLCOVERSTONE CONDOMINIUMS PHASE 3AMinor Discharge|EPA

VILLAGE OF LANNONMAIN/TOWNLINE/FOREST VIEW/PARKVIEW/LANNON/GOOD HOPMinor Discharge|EPA

STONEWOOD TRAIL LLCMAIN STREETMinor Discharge|EPA

SAWALL DEVELOPMENTMAIN STREETMinor Discharge|EPA

OVERSTONE CONDOMINIUMS LLCMAIN STREETMinor Discharge|EPA

OVERSTONE CONDOMINIUMS LLC19318 W MAIN STREETMinor Discharge|EPA

THE ORCHARDS OF MUKWONAGO LLCNORTH SIDE OF WEST MAIN STREET 2500 FEET EAST OF CMinor 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.

BRENNTAG GREAT LAKES LLCMENOMONEE FALLS3.9 mi|EPA

VEOLIA ES TECHNICAL SOLUTIONS LLCMENOMONEE FALLS5.2 mi|EPA

TRADEBE TREATMENT AND RECYCLING OF WI LLCMILWAUKEE8.9 mi|EPA

UNIVAR USA INC MILWAUKEEWEST ALLIS11.8 mi|EPA