EPA-regulated facilities in St. Mary's County, MD

There are 676 EPA-regulated facilities inside St. Mary's County, Maryland. The most common kinds are water discharge (235), drinking water systems (203), hazardous waste (180). 23 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 32 have a violation on record. Penalties over the last five years total $15k across 3 sites.

Open the map of St. Mary's County

676facilities in the county

23in significant noncompliance

32with a violation on record

$15kin penalties, last 5 years

By category

Category	Facilities
Hazardous waste	180
Large quantity generators	8
Small quantity generators	112
Transporters	1
Chemical (RMP/TRI)	6
Superfund	3
Air emissions	74
Major sources	1
Synthetic minor sources	1
Minor sources	44
Water discharge	235
Major permits	2
Minor permits	212
Drinking water systems	203
Greenhouse gas reporters	1
Scrap yards	6

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.

TALL TIMBERS DEVELOPMENT COMPANY 18521 HERRING CREEK ROAD UNIT 9, TALL TIMBERS, MD, 20690 Significant noncompliance
CARRUTH & SON, INC. - LEXINGTON PARK 21353 SANNERS LANE, LEXINGTON PARK, MD, 20653 Significant noncompliance
LUNDEBERG MD.SEAMANSHIP SCH 45353 ST.GEORGE AVENUE, PINEY POINT, MD, 20674 Significant noncompliance
WILDEWOOD APARTMENTS, PHASE I 23314 SURREY WAY, CALIFORNIA, MD, 20619 Significant noncompliance
WILDEWOOD APARTMENT HOMES, PHASE II 23275 CASTILLA WAY, CALIFORNIA, MD, 20619 Significant noncompliance
BURCH'S PIT 24170 POINT LOOKOUT ROAD, LEONARDTOWN, MD, 20650 Significant noncompliance
MEADOWS AT TOWN RUN SECTION II CLUBHOUSE AND POOL 42048 WILD FLOWER DRIVE, LEONARDTOWN, MD, 20650 Significant noncompliance
CAMP MARIA RETREAT CENTER 41290 CAMP MARIA ROAD, LEONARDTOWN, MD, 20650 Significant noncompliance
CHANCELLOR'S POINT STATE PARK 18171 ROSECROFT RD, ST MARY'S CITY, MD, 20689 Significant noncompliance
HOLLYWOOD USED AUTO PARTS 43900 COMMERCE AVE., HOLLYWOOD, MD, 20636 Significant noncompliance

Largest penalties

Penalties assessed over the last five years.

LOCKHEED MARTIN PATUXENT ENGINEERING 21530 PACIFIC DR, LEXINGTON PARK, MD, 20653 $10k in penalties
GOLDEN EYE SEAFOOD 17640 CLARKE RD., PINEY POINT, MD, 20674 $3k in penalties
GOLDEN EYE SEAFOOD 17640 CLARKE RD, TALL TIMBERS, MD, 20690 $3k in penalties

Superfund sites

PATUXENT RIVER NAVAL AIR STATION OPPOSITE LEXINGTON PARK (STATE HWY 235), PATUXENT RIVER, MD, 20670
NAS WEBSTER FIELD ANNEX VILLA ROAD - 13 MILES SOUTHWEST OF NAS PATUXENT, SAINT INIGOES, MD, 20684
SOUTHERN MARYLAND WOOD TREATING STATE ROUTE 235, HOLLYWOOD, MD, 20636

Towns in St. Mary's County

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.