EPA-regulated facilities near Lake St. Louis, MO

There are 1,065 EPA-regulated facilities within 5 miles of Lake St. Louis, Missouri. The most common kinds are water discharge (853), hazardous waste (188), air emissions (57). 3 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 9 have a violation on record. Penalties over the last five years total $14k across 3 sites.

Open the map here

1,065facilities within 5 miles

3in significant noncompliance

9with a violation on record

$14kin penalties, last 5 years

By category

Category	Facilities
Hazardous waste	188
Large quantity generators	1
Small quantity generators	78
Chemical (RMP/TRI)	20
Superfund	1
Air emissions	57
Major sources	4
Synthetic minor sources	1
Minor sources	38
Water discharge	853
Minor permits	826
Drinking water systems	10
Greenhouse gas reporters	1
Scrap yards	2

A facility enrolled in several programs counts once in the total and once in each of its categories.

In significant noncompliance

The EPA's designation for its most serious or persistent violations, as of the latest data.

DARDENNE PRAIRIE SM MS4 2032 HANLEY RD, O'FALLON, MO, 63368 · 1.2 mi Significant noncompliance
LAKE SAINT LOUIS COMMUNITY ASSOCIATION 100 COGNAC COURT, LAKE SAINT LOUIS, MO, 63367 · 2.0 mi Significant noncompliance
BMC O'FALLON 1440 TERRA LANE WEST, O'FALLON, MO, 63366 · 3.0 mi Significant noncompliance

Largest penalties

Penalties assessed over the last five years.

MFA AGRI SERVICE 210 WEST MAIN STREET, WENTZVILLE, MO, 63385 · 4.3 mi $8k in penalties
GENERAL MOTORS LLC WENTZVILLE ASSEMBLY 1500 E. RTE. A, WENTZVILLE, MO, 63385 · 2.7 mi $4k in penalties
SUPERIOR HOME PRODUCTS INC 211 EDINGER ROAD, WENTZVILLE, MO, 63385 · 3.6 mi $3k in penalties

Superfund sites

MERCURY-JUNO DRIVE 10 JUNO DRIVE, WENTZVILLE, MO, 63385 · 3.6 mi

County

St. Charles County

Nearby towns

O'Fallon 4 mi
Dardenne Prairie 5 mi
Wentzville 5 mi
St. Peters 10 mi
Chesterfield 14 mi
St. Charles 15 mi
Wildwood 15 mi
Troy 16 mi

Reading these numbers

These are regulatory records, not measurements of pollution. Most facilities appear because they hold a permit or file reports, and most of them are compliant; a listing is not a claim that a facility has polluted anything. Compliance status and penalties are the EPA's own determinations in data retrieved Oct 9, 2026. Distances are from the center of Lake St. Louis as the Census Bureau records it. The Data page explains where each record comes from and how it can mislead.