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.

Eureka, MO Water Quality, EPA Sites & Air Quality Data

Environmental Reporti

Water Systemsi

6community / 44 total

Water Violationsi

TRI Facilitiesi

Active NPDESi

5/ 24 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 (35)

Community (6)

Non-Transient (3)

Recent Violations (Last 5 Years)

EUREKA WATER ASSOCIATION

6 violationsLatest: 2024-10-01

EPA

DEVILS GATE WATER SYSTEM GID 2

4 violationsLatest: 2024-10-01

EPA

DEVILS GATE GID DISTRICT 1

1 violationLatest: 2024-10-01

EPA

EUREKA

2 violationsLatest: 2024-01-01

EPA

Historical Violations (Over 5 Years Ago)

CRESCENT VALLEY WATER SYSTEM

1 violationLatest: 2016-01-01

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

RUBY HILL MINING CO LLCINTRSCTION OF HWY 50 & SR2785 chemicals|TRI

GOLD BAR MINE30 MILES NW OF EUREKA5 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

EUREKA WTPROUTE 117 SOUTHPOTW|EPA

EUREKA WTPROUTE 117 SOUTHMinor Discharge|EPA

EUREKA STORM SEWER IMPROVEMENTSMAIN ST & W. CRUGER AVEConstruction Stormwater|EPA

EUREKA HIGH SCHOOL BUILDING ADDITION200 W. CRUGER AVENUEConstruction Stormwater|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.

EUREKA SMELTERPOSTAL ADDRESS IS UNAVAILABLE FOR THE SITEIn Progress|EPA

BARRICK GOLD STRIKE MINE - BLM27 M NORTH OF CARLIN-T36N R493 SEC 9-16In Progress|EPA

Leaking Underground Storage Tanksi

MO DNR

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 19Open 1Closed 18

Open Incidents (1)

Darnell, Pearl Estate of121 West Center Street|#892275|MO DNR