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.

Wisconsin Dells, WI Water Quality, EPA Sites & Air Quality Data

Environmental Reporti

Water Systemsi

2community / 299 total

Water Violationsi

TRI Facilitiesi

Active NPDESi

9/ 16 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 (47)

Community (2)

Non-Transient (1)

Recent Violations (Last 5 Years)

DELLS CLUB CONDO ASSOC 2

1 violationLatest: 2025-07-02

EPA

DELLS CLUB CONDO ASSOC 3

14 violationsLatest: 2024-10-01

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

BIG JOE MANUFACTURING COE 10786 COMMERCIAL AVE1 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

LOWER DELLS ADVENTURES LLC SITEPARCELS 1568.01, 1565.02 AND 1561.01 ON GRAND CAMBMinor Discharge|EPA

RIVERWOOD EAGLE'S NEST, LLC SITEBOWMAN ROAD AND SHIELDS ROADMinor Discharge|EPA

MOVIN' OUT KILBOURN WISCONSIN DELLS LLC SITE920 RACE STREETMinor Discharge|EPA

LOWER DELLS ADVENTURES LLC SITEGRAND CAMBRIAN DRIVEMinor Discharge|EPA

CITY OF WISCONSIN DELLS SITEFITZGERALD ROAD FROM CTH H TO USH 12 AND PIONEER DMinor Discharge|EPA

HARPERS SALVAGE SALES AND SERVICE3066 STATE HIGHWAY 13Minor Discharge|EPA

NLS LLC SITE2955 WISCONSIN DELLS PKWYMinor Discharge|EPA

STONY ACRES LLC SITE800 JONES ROAD, WISCONSIN DELLSMinor Discharge|EPA

CITY OF WISCONSIN DELLS SITEINTERSECTION OF FITZGERALD ROAD AND COUNTY HIGHWAYMinor Discharge|EPA