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.

Viola, IL Water Quality, EPA Sites & Air Quality Data

Environmental Reporti

Water Systemsi

1community / 2 total

Water Violationsi

Active NPDESi

4/ 10 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

Community (1)

Transient (1)

Recent Violations (Last 5 Years)

VIOLA

17 violationsLatest: 2025-10-12

EPA

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

ODYSSEY VIOLA SOLAR, LLC257TH STREETConstruction Stormwater|EPA

VIOLA RENEWABLESUS HWY ^&Construction Stormwater|EPA

VIOLA STP, VILLAGE OFNORTHEAST EDGE OFPOTW|EPA

68801 US 67 BRIDGE REPLACEMENT OVER NORTH HENDERSON CREEKUS 67 OVER N. HENDERSON CR, 6.7 MILES S. OF VIOLAConstruction Stormwater|EPA

Leaking Underground Storage Tanksi

IL EPA

Underground storage tanks (commonly at gas stations) can leak fuel and chemicals into soil and groundwater. "Open" means the leak is still being investigated or cleaned up. "Closed" means the site received a No Further Remediation (NFR) letter — cleanup is done.

Total 7Open 4Closed 3

Open Incidents (4)

Kugler, Sam1701 13th St.|#970347|IL EPA

S&S Mobil11th Ave. & 13th St.|#870096|IL EPA

Illinois Dept. of TransportationNorth of Rt. 67 & 17|#922494|IL EPA

Illinois Dept. of Transportation1602 13th St.|#922789|IL EPA