EPA-regulated facilities near Ellicott City, MD

There are 593 EPA-regulated facilities within 5 miles of Ellicott City, Maryland. The most common kinds are hazardous waste (322), air emissions (214), water discharge (152). 4 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 6 have a violation on record. Penalties over the last five years total $5k across 1 site.

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593facilities within 5 miles

4in significant noncompliance

6with a violation on record

$5kin penalties, last 5 years

By category

Category	Facilities
Hazardous waste	322
Large quantity generators	11
Small quantity generators	135
Transporters	3
Chemical (RMP/TRI)	5
Superfund	4
Air emissions	214
Major sources	1
Synthetic minor sources	3
Minor sources	155
Water discharge	152
Major permits	1
Minor permits	114
Drinking water systems	36
Greenhouse gas reporters	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.

NOB HILL SWIM CLUB 9538 WESTWOOD DRIVE, ELLICOTT CITY, MD, 21042 · 0.4 mi Significant noncompliance
RESIDENCE INN COLUMBIA 4950 BEAVER RUN, ELLICOTT CITY, MD, 21043 · 2.9 mi Significant noncompliance
TREUTH, J.W. & SONS 328 OELLA AVENUE, BALTIMORE, MD, 21228 · 3.1 mi Significant noncompliance
FIVE OAKS POOL 1817 FREDERICK ROAD, CATONSVILLE, MD, 21228 · 4.3 mi Significant noncompliance

Largest penalties

Penalties assessed over the last five years.

ELLICOTT MEADOWS COMMUNITY ASSOCIATION WWTP 11804 WILLOW BRANCH, ELLICOTT CITY, MD, 21042 · 3.4 mi $5k in penalties

Superfund sites

NATIONAL SECURITY AGENCY RUMSEY RD B 2, COLUMBIA, MD, 21045 · 3.1 mi
SOUTH HILLTOP ROAD DUMP AKA SIMKINS INDUSTRIES DUMP SOUTH HILLTOP ROAD, CATONSVILLE, MD, 21228 · 4.0 mi
SIMKIN INDUSTRIES PLANT RIVER ROAD, CATONSVILLE, MD, 21228 · 4.1 mi
GRANITE - CONTROL 2845 HERNWOOD RD, WOODSTOCK, MD, 21163 · 4.9 mi

County

Howard County

Nearby towns

Catonsville 5 mi
Woodlawn 5 mi
Columbia 5 mi
Ilchester 6 mi
Milford Mill 6 mi
Randallstown 7 mi
Lochearn 8 mi
Arbutus 8 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 Ellicott City as the Census Bureau records it. The Data page explains where each record comes from and how it can mislead.