EPA-regulated facilities in Hancock County, MS

There are 319 EPA-regulated facilities inside Hancock County, Mississippi. The most common kinds are water discharge (149), hazardous waste (132), air emissions (31). 5 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 13 have a violation on record. Penalties over the last five years total $290k across 5 sites.

Open the map of Hancock County

319facilities in the county

5in significant noncompliance

13with a violation on record

$290kin penalties, last 5 years

By category

Category	Facilities
Hazardous waste	132
Large quantity generators	3
Small quantity generators	92
Transporters	4
Chemical (RMP/TRI)	14
Superfund	6
Air emissions	31
Major sources	9
Synthetic minor sources	3
Minor sources	5
Water discharge	149
Major permits	3
Minor permits	101
Drinking water systems	25
Greenhouse gas reporters	3
Data centers	2
Scrap yards	1

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.

MIKE HENLEY MINE HORSESHOE RD, KILN, MS, 39556 Significant noncompliance
BOURGEOIS TRUCKING AND EQUIPMENT LLC PIT #3 BAYOU LACROIX ROAD, BAY ST. LOUIS, MS, 39520 Significant noncompliance
PEARLINGTON CLAY LLC, ZENGARLING PIT BAYOU LACROIX ROAD, WAVELAND, MS, 39576 Significant noncompliance
HANCOCK NORTH CENTRAL ELEMENTARY SCHOOL 6122 CUEVAS TOWN ROAD, KILN, MS, 39571 Significant noncompliance
CREEKSIDE ESTATES SUBDIVISION 23607 HIGHWAY 603, KILN, MS, 39556 Significant noncompliance

Largest penalties

Penalties assessed over the last five years.

JINDAL TUBULAR USA LLC 13092 SEA PLANE ROAD, BAY ST. LOUIS, MS, 39520 $175k in penalties
CALGON CARBON CORPORATION 13121 WEBRE ROAD, BAY ST LOUIS, MS, 39520 $78k in penalties
MERITAGE HOMES OF MISSISSIPPI, INC, DIAMONDHEAD SUBDIVISION CHERRYHILL DRIVE, DIAMONDHEAD, MS, 39525 $22k in penalties
POLYCHEMIE INC 3080 PORT AND HARBOR DRIVE, PEARLINGTON, MS, 39572 $12k in penalties
DELISLE DIRT, STOREY MINE 835 KILN-DELISLE ROAD, PASS CHRISTIAN, MS, 39571 $2k in penalties

Superfund sites

INGRAM INDUSTRIES WILDERNESS LANE, KILN, MS, 39556
HANCOCK COUNTY MERCURY RELEASE 7070 STENNIS AIRPORT DRIVE, KILN, MS, 39556
BAY ST. LOUIS HIGH SCHOOL MERCURY 750 BLUE MEADOW ROAD, BAY ST LOUIS, MS, 39520-1606
TENNESSEE GAS PIPELINE/CS 530 HANCOCK COUNTY, BAY ST. LOUIS, MS, 39520
US NASA STENNIS SPACE CENTER CODE GA00, STENNIS SPACE CENTER, MS, 39529-6000
POLYCHEMIE DIMETHYLAMINE RELEASE PORT BIENVILLE INDUSTRIAL PARK, PEARLINGTON, MS, 39572

Data centers

NASA SHARED SERVICE CENTER, NCCIPS 9325 CYPRESS LOOP ROAD, STENNIS SPAC, MS, 39522
HEWLETT PACKARD ENTERPRISE AT STENNIS SPACE CENTER 1000 BALCH BLVD, STENNIS SPACE CENTER, MS, 39522

Towns in Hancock County

Bay St. Louis

Bordering counties

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. The Data page explains where each record comes from and how it can mislead.