EPA-regulated facilities near Thornton, CO

There are 1,647 EPA-regulated facilities within 5 miles of Thornton, Colorado. The most common kinds are water discharge (1,011), air emissions (427), hazardous waste (340). 7 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 35 have a violation on record. Penalties over the last five years total $250k across 9 sites.

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1,647facilities within 5 miles

7in significant noncompliance

35with a violation on record

$250kin penalties, last 5 years

By category

Category	Facilities
Hazardous waste	340
Treatment, storage or disposal	1
Large quantity generators	8
Small quantity generators	150
Transporters	2
Chemical (RMP/TRI)	31
Air emissions	427
Major sources	3
Synthetic minor sources	35
Minor sources	336
Water discharge	1,011
Major permits	3
Minor permits	876
Drinking water systems	7
Greenhouse gas reporters	1
Data centers	1
Recycling centers	1

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.

SEGMENT NUMBER 4 THORNTON WATER PROJECT E 112 AVE AND RIVERDALE RD, THORNTON, CO, 80602 · 2.0 mi Significant noncompliance
THORNTON WATER PROJECT SEGMENT A 168TH AVE TO 88TH AVE QUEBEC ST AND RIVERDALE RD, THORNTON, CO, 80229 · 2.1 mi Significant noncompliance
BIG DRY CREEK WWTP 13150 NORTH HURON ST, WESTMINSTER, CO, 80234 · 3.0 mi Significant noncompliance
SEGMENT NUMBER 8 TWP S OF E 96 AVE, THORNTON, CO, 80229 · 3.8 mi Significant noncompliance
120TH PIT 10701 E 120 AVE, HENDERSON, CO, 80640 · 4.2 mi Significant noncompliance
SINGLETREE 9339 BRIGHTON RD, HENDERSON, CO, 80640 · 4.2 mi Significant noncompliance
THORNTON TREATMENT FACILITY PFAS 920 E THORNTON PKWY, THORNTON, CO, 80229 · 4.9 mi Significant noncompliance

Largest penalties

Penalties assessed over the last five years.

NORTH HURON INTERCEPTOR SEWER REPLACEMENT 136TH AVE AND ORCHARD PKWY, WESTMINSTER, CO, 80031 · 3.2 mi $89k in penalties
NORTH HURON INTERCEPTOR SEWER REPLACEMENT 136 AVE AND ORCHARD PKWY, WESTMINSTER, CO, 80031 · 3.2 mi $89k in penalties
XPO LOGISTICS FREIGHT INC - UDV 9801 DALLAS ST, HENDERSON, CO, 80640 · 4.6 mi $32k in penalties
WASHINGTON STREET WIDENING WASHINGTON ST AND 152 AVE, THORNTON, CO, 80614 · 3.9 mi $12k in penalties
THORNTON SHOPPING CENTER REMEDIATION 8866 WASHINGTON ST, THORNTON, CO, 80229 · 4.8 mi $10k in penalties

Data centers

Google - Thornton Grant Street, Thorton · 2.2 mi

County

Adams County

Nearby towns

Northglenn 2 mi
Broomfield 6 mi
Sherrelwood 7 mi
Westminster 7 mi
Commerce City 8 mi
Brighton 8 mi
Berkley 9 mi
Erie 10 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 Thornton as the Census Bureau records it. The Data page explains where each record comes from and how it can mislead.