EPA-regulated facilities near Arnold, MD

There are 770 EPA-regulated facilities within 5 miles of Arnold, Maryland. The most common kinds are hazardous waste (293), air emissions (211), water discharge (204). 7 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 16 have a violation on record. Penalties over the last five years total $63k across 3 sites.

Open the map here

770facilities within 5 miles
7in significant noncompliance
16with a violation on record
$63kin penalties, last 5 years

By category

CategoryFacilities
Hazardous waste293
Large quantity generators5
Small quantity generators167
Transporters4
Chemical (RMP/TRI)5
Superfund4
Air emissions211
Major sources1
Synthetic minor sources2
Minor sources176
Water discharge204
Minor permits137
Drinking water systems192
Data centers2

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.

Largest penalties

Penalties assessed over the last five years.

Superfund sites

Data centers

County

Nearby towns

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 Arnold as the Census Bureau records it. The Data page explains where each record comes from and how it can mislead.