EPA-regulated facilities near Rockville, MD

There are 1,563 EPA-regulated facilities within 5 miles of Rockville, Maryland. The most common kinds are hazardous waste (929), air emissions (603), water discharge (318). 13 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 18 have a violation on record. Penalties over the last five years total $5.4M across 2 sites.

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1,563facilities within 5 miles

13in significant noncompliance

18with a violation on record

$5.4Min penalties, last 5 years

By category

Category	Facilities
Hazardous waste	929
Large quantity generators	34
Small quantity generators	463
Transporters	9
Chemical (RMP/TRI)	17
Superfund	3
Air emissions	603
Major sources	2
Synthetic minor sources	6
Minor sources	496
Water discharge	318
Major permits	1
Minor permits	220
Drinking water systems	27
Greenhouse gas reporters	1
Data centers	3
Scrap yards	2
Recycling centers	3

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.

WOODLEY GARDENS SWIM CLUB 850 NELSON STREET, ROCKVILLE, MD, 20850 · 1.1 mi Significant noncompliance
LAFARGE-SOUTHLAWN BLACKTOP 14811 SOUTHLAWN LANE, ROCKVILLE, MD, 20850 · 1.5 mi Significant noncompliance
CARTER HILL H.O.A. 17 GUY COURT, ROCKVILLE, MD, 20850 · 1.5 mi Significant noncompliance
MONTGOMERY SQUARE C. SWIM CLUB 12300 FALLS ROAD, POTOMAC, MD, 20854 · 2.2 mi Significant noncompliance
TWINBROOK SWIMMING POOL 13027 ATLANTIC AVENUE, ROCKVILLE, MD, 20851 · 2.3 mi Significant noncompliance
UNITED STATES PHARMACOPEIAL CONVENTION 12601 TWINBROOK PARKWAY, ROCKVILLE, MD, 20852 · 2.6 mi Significant noncompliance
MONTGOMERY COUNTY SOLID WASTE 16101 FREDERICK AVENUE, DERWOOD, MD, 20855 · 2.7 mi Significant noncompliance
TILDEN WOODS POOL 6806 TILDEN LANE, ROCKVILLE, MD, 20852 · 2.9 mi Significant noncompliance
FLOWER VALLEY BATH & RACQUET CLUB 4510 FLOWER VALLEY DRIVE, ROCKVILLE, MD, 20853 · 3.8 mi Significant noncompliance
17 BARKLEY 17 BARKLEY LANE, GAITHERSBURG, MD, 20877 · 3.8 mi Significant noncompliance

Largest penalties

Penalties assessed over the last five years.

UNITED PARCEL SERVICE - GAITHERSBURG (MDGAI) 9401 GAITHER ROAD, GAITHERSBURG, MD, 20877 · 3.1 mi $5.3M in penalties
WALNUT GROVE 11925 PARKLAWN DRIVE, ROCKVILLE, MD, 20852 · 3.5 mi $150k in penalties

Superfund sites

NIH CHEM GENOMICS CTR 9800 MEDICAL CENTER DR, ROCKVILLE, MD, 20850 · 2.4 mi
FEDERAL STREET MERCURY 4201 FEDERAL STREET, ROCKVILLE, MD, 20853 · 4.0 mi
ROCKVILLE - CONTROL 10901 DARNSTOWN RD, GAITHERSBURG, MD, 20878 · 4.0 mi

Data centers

GENERAL ELECTRIC, ROCKVILLE 401 WASHINGTON STREET NORTH, ROCKVILLE, MD, 20850 · 0.4 mi
ADP OF WASHINGTON 6006 EXECUTIVE BOULEVARD, ROCKVILLE, MD, 20852 · 3.1 mi
GE INFORMATION SYSTEMS 100 EDISON PARK DRIVE, GAITHERSBURG, MD, 20878 · 4.8 mi

County

Montgomery County

Nearby towns

Redland 3 mi
North Bethesda 4 mi
Aspen Hill 4 mi
North Potomac 5 mi
Gaithersburg 5 mi
Potomac 5 mi
Travilah 5 mi
Wheaton 6 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 Rockville as the Census Bureau records it. The Data page explains where each record comes from and how it can mislead.