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.

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

Environmental Reporti

Air Qualityi

40Good

Water Systemsi

2community / 9 total

Water Compliancei

Clean

Active NPDESi

1/ 3 total

Air Quality — Lake County (2025)i

AQS

The Air Quality Index measures how clean or polluted the air is on a given day. AQI is reported at the county level. A score of 0–50 is considered good; 51–100 is moderate; above 100 may be unhealthy for sensitive groups.

Good

Median AQI

050100150200300

max 108

PM2.5 Daysi

Ozone Daysi

200

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 (5)

Community (2)

Non-Transient (2)

Historical Violations (Over 5 Years Ago)

RIVERWOODS SPECIAL SERVICE DISTRICT 3

1 violationLatest: 1994-01-01

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

SAUNDERS ROAD IMPROVEMENTS - RIVERWOODS2416 SAUNDERS ROADConstruction 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 6Open 4Closed 2

Open Incidents (4)

Advantest America Inc.2887 Blackthorn|#950257|IL EPA

Casey's Retail Company2201 West Deerfield Road|#20230224|IL EPA

Riverwoods, Village of1055 Milwaukee Avenue|#20180809|IL EPA

Exxon Mobil Oil2201 West Deerfield Road|#20090328|IL 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