Montgomery County, TX

The federal environmental record for Montgomery County (population 711,354): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.

Superfund NPL sites

federal cleanup sites

PFAS-detecting water systems

TRI facilities

open tank releases

Superfund NPL sites

Site	City	Status	Listed
Conroe Creosoting Company	Conroe	on the NPL	09/29/2003
United Creosoting Co.	Conroe	on the NPL	09/21/1984

Drinking water: PFAS testing

Public water systems serving Montgomery with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.

System	Highest results	Reading
Montgomery Trace TX1700638	PFOA: 4.8 ng/L	above final limit
MONTGOMERY COUNTY MUD 15 TX1700118	6:2 FTS: 5.6 ng/L PFBS: 4.4 ng/L	detected
MONTGOMERY COUNTY MUD 46 TX1700348	PFBA: 5.1 ng/L	detected
MONTGOMERY COUNTY MUD 18 TX1700546	PFBA: 11.6 ng/L 6:2 FTS: 5.6 ng/L	detected

On a system with detections? Testing and treatment options

Facilities reporting toxic releases (2024)

28 facilities in Montgomery filed TRI reports for 2024, totalling 2.4M lb released. The 25 largest by volume:

Facility	City	Top chemicals	Total released
UNION PROCESSING SYSTEMS LLC	CONROE	1,4-Dioxane, Ethylene glycol	1.5M lb
HUNTSMAN PETROCHEMICAL LLC	CONROE	Ammonia, Cyclohexane	565k lb
SABRE INDUSTRIES	CONROE	Zinc compounds, Chromium	125k lb
NOV DOWNHOLE CONROE	CONROE	Silver, Copper	124k lb
BALL METAL BEVERAGE CONTAINER CORP	CONROE	Certain glycol ethers, n-Butyl alcohol	59k lb
CROWN BEVERAGE PACKAGING	CONROE	Certain glycol ethers, n-Butyl alcohol	23k lb
UNIVAR SOLUTIONS USA	CONROE	Methanol, Certain glycol ethers	7k lb
HEMPEL (USA) INC	CONROE	Xylene (mixed isomers), n-Butyl alcohol	5k lb
R&D MARBLE INC.	WILLIS	Styrene	3k lb
LAMBERTI USA CONROE PLANT 8910	CONROE	Methanol, Ethylene glycol	3k lb
HILAND DAIRY FOODS LLC	CONROE	Nitrate compounds (water dissociable; reportable only when in aqueous solution)	2k lb
SIGMA LIFE SCIENCES	THE WOODLANDS	Acetonitrile, Dichloromethane	2k lb
NOV TEXAS OIL TOOLS/CTES CONROE	CONROE	Copper, Nickel	1k lb
BAKER HUGHES - HUGHES CHRISTENSEN	THE WOODLANDS	Copper, Nickel	633 lb
WELLDYNAMICS INC	SPRING	Ethylene glycol	250 lb
LAMBERTI USA CONROE PLANT 8920	CONROE	Certain glycol ethers, Nonylphenol Ethoxylates	250 lb
INKJET INC	WILLIS	Methanol	250 lb
NOV CONROE BRANDT/PORTABLE POWER & R&D RIG SOLUTIONS SCOT	CONROE	Nickel, Chromium	200 lb
HALLIBURTON DRILL BITS & SERVICES	CONROE	Nickel, Manganese	167 lb
CST COVERS	CONROE	Manganese, Copper	4 lb
CONROE CONCRETE PRODUCTS	CONROE	Lead	1 lb
ALLIED PLANT 10 - NEW CANEY	NEW CANEY	Lead	1 lb
MAVERICK TUBE LLC DBA TENARISCONROE	CONROE	-	0 lb
STERLING CUSTOM SHEET METAL	MAGNOLIA	-	0 lb
HEIDELBERG MATERIALS - MAGNOLIA RMC	MAGNOLIA	Lead	0 lb

Underground fuel tanks

EPA's UST Finder records 686 tank facilities in Montgomery: 833 tanks in service and 1,001 closed. 261 fuel releases are on record, of which 23 remain open. Open releases are cleanups that have not reached "no further action".

Radon

EPA maps Montgomery as Zone 3, the lowest predicted indoor radon (under 2 pCi/L average). Radon and air quality are covered in depth on lung.com.

The record for one specific address

County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.

Get the report - $39

All federal cleanup sites on file

The wider Superfund enterprise inventory (SEMS) for Montgomery, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.

CONROE CREOSOTING CO.CONROE
DRILLCHEM EXPLOSION AND FIRECONROE
SAWDUST LABWOODLANDS
UNITED CREOSOTING CO.CONROE