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.

West Alton, MO Water Quality, EPA Sites & Air Quality Data

Environmental Reporti

Water Systemsi

Water Compliancei

Clean

TRI Facilitiesi

Active NPDESi

8/ 28 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 (4)

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

AMEREN MISSOURI SIOUX ENERGY CENTER8501 N STATE RT 945 chemicals|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

AMEREN MISSOURI SIOUX ENERGY CENTER8501 N ST ROUTE 94Major Discharge|EPA

CORA ISLAND CHUTE297-399 CORA ISLAND RDConstruction Stormwater|EPA

AMEREN MISSOURI SIOUX ENERGY CENTER8501 N ST ROUTE 94Construction Stormwater|EPA

124 RICHARD DRIVE124 RICHARD DRIVEConstruction Stormwater|EPA

AMEREN MISSOURI SIOUX ENERGY CENTER8501 N ST ROUTE 94Construction Stormwater|EPA

CODES - WEST ALTON124 RICHARD DRConstruction Stormwater|EPA

CINDER ROAD GRADING22 HOODS DRIVEConstruction Stormwater|EPA

HARBOR POINT YACHT CLUB280 JAMIE CIRCLEMinor 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.

GBC METALS LLC D/B/A OLIN BRASSEAST ALTON5.2 mi|EPA

CONOCOPHILLIPS COROXANA7.3 mi|EPA

MCDONNELL DOUGLAS CORPHAZELWOOD11.9 mi|EPA

Cleanup Sites (Brownfields)i

EPA Brownfields

Former industrial or commercial properties where contamination has been found. "Remedy Complete" means cleanup is finished. "Construction Complete" means cleanup infrastructure is built but monitoring continues. "In Progress" means the site is still being investigated or cleaned up.

LEWIS & CLARK SAWMILL14400 HWY 67In Progress|EPA