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EPA-regulated facilities in Arapahoe County, CO

There are 5,166 EPA-regulated facilities inside Arapahoe County, Colorado. The most common kinds are water discharge (2,832), hazardous waste (1,447), air emissions (1,241). 16 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 62 have a violation on record. Penalties over the last five years total $8.7M across 38 sites.

Open the map of Arapahoe County

5,166facilities in the county
16in significant noncompliance
62with a violation on record
$8.7Min penalties, last 5 years

By category

CategoryFacilities
Hazardous waste1,447
Treatment, storage or disposal5
Large quantity generators2
Small quantity generators536
Transporters4
Chemical (RMP/TRI)51
Superfund14
Air emissions1,241
Major sources10
Synthetic minor sources120
Minor sources993
Water discharge2,832
Major permits5
Minor permits2,274
Drinking water systems93
Greenhouse gas reporters15
Data centers24
Scrap yards6
Recycling centers4

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

Towns in Arapahoe 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.