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Montgomery County, Texas: environmental and disease records

Cancer mortality in Montgomery County is 138.5 deaths per 100,000 people per year against a U.S. rate of 143.2. The strongest disease signals are Kidney & renal pelvis deaths at 1.3 times the U.S. rate. Federal databases place 3,092 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (2,309), Gas station (mapped facility) (266), Rail grade crossing (158). EPA AirToxScreen estimates a lifetime cancer risk from outdoor air toxics of 40 in a million, driven mainly by formaldehyde.

Rates are age-adjusted per 100,000 people. A cancer signal is marked significant when the lower bound of its 95 percent confidence interval is above the U.S. rate. Facility counts use active federal records located inside the county boundary. Approximate county center: 30.3285, -95.515.

How this county ranks in Texas

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Cancer deaths and new cases versus the United States

Source: NCI and CDC State Cancer Profiles, both sexes, all ages. Sorted by the ratio of the county rate to the U.S. rate.

Cancer rates for Montgomery County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Kidney & renal pelvis	Deaths	4.5	3.4	1.32xSignificant	3.8 to 5.4	2020-2024
Childhood cancer (under 15)	New cases	20.6	16.4	1.26xSignificant	17.4 to 24.3	2019-2023
Brain & nervous system	Deaths	4.9	4.4	1.11x	4.2 to 5.7	2020-2024
Kidney & renal pelvis	New cases	19.9	17.9	1.11xSignificant	18.4 to 21.4	2019-2023
Melanoma of the skin	New cases	26.2	23.8	1.1xSignificant	24.5 to 28.1	2019-2023
Brain & nervous system	New cases	6.7	6.2	1.08x	5.8 to 7.6	2019-2023
Liver & bile duct	New cases	9.4	8.7	1.08x	8.4 to 10.5	2019-2023
Liver & bile duct	Deaths	6.9	6.6	1.05x	6 to 7.8	2020-2024
Pancreas	New cases	14.5	13.9	1.04x	13.2 to 15.9	2019-2023
Leukemia	New cases	15	14.5	1.03x	13.7 to 16.4	2019-2023
Leukemia	Deaths	5.8	5.7	1.02x	4.9 to 6.7	2020-2024
Non-Hodgkin lymphoma	Deaths	4.7	4.8	0.98x	4 to 5.5	2020-2024
Lung & bronchus	Deaths	29.5	30.2	0.98x	27.7 to 31.4	2020-2024
Non-Hodgkin lymphoma	New cases	18	18.5	0.97x	16.5 to 19.5	2019-2023
Esophagus	Deaths	3.6	3.7	0.97x	3 to 4.3	2020-2024
All cancer	Deaths	138.5	143.2	0.97x	134.5 to 142.6	2020-2024
Pancreas	Deaths	10.9	11.3	0.96x	9.8 to 12	2020-2024
All cancer	New cases	436.9	453.4	0.96x	429.9 to 444.1	2019-2023
Melanoma of the skin	Deaths	1.9	2	0.95x	1.4 to 2.4	2020-2024
Stomach	Deaths	2.5	2.7	0.93x	2 to 3.1	2020-2024
Esophagus	New cases	4.2	4.6	0.91x	3.5 to 5	2019-2023
Stomach	New cases	6	6.6	0.91x	5.2 to 6.9	2019-2023
Lung & bronchus	New cases	47	51.8	0.91x	44.7 to 49.4	2019-2023
Bladder	New cases	16	18.7	0.86x	14.6 to 17.4	2019-2023
Bladder	Deaths	3.4	4.1	0.83x	2.8 to 4.2	2020-2024
Thyroid	New cases	10.7	13	0.82x	9.6 to 11.9	2019-2023

Mortality measures versus the U.S. county median

Source: County Health Rankings, built from CDC National Vital Statistics System death records. The comparison value is the median of all U.S. counties.

Mortality measures for Montgomery County
Measure	County	U.S. median	Difference	Unit
Premature death	6,837.1	9,842.6	-31%	years of life lost before age 75 per 100,000
Life expectancy	78.2	75.3	+4%	years
Child mortality	46.6	59.8	-22%	deaths under age 18 per 100,000
Infant mortality	4.6	6.2	-26%	deaths under age 1 per 1,000 live births
Injury deaths	65.5	96.9	-32%	deaths per 100,000
Drug overdose deaths	19.3	28.6	-33%	deaths per 100,000

Air toxics and air quality

EPA AirToxScreen 2020

Lifetime cancer risk from outdoor air toxics: 40 in a million. EPA treats 100 in a million as the upper end of acceptable risk and 1 in a million as the goal.

Formaldehyde24.7 per million
Ethylene Oxide8.44 per million
Carbon Tetrachloride2.89 per million
Acetaldehyde1.94 per million

EPA Air Quality Index 2025

Monitored on 363 days: 142 good, 8 unhealthy for sensitive groups or worse. Median AQI 53, peak 133.

Regulated facilities, sites and hazards by type

3,092 active records inside the county from EPA ECHO, TRI, Superfund, Brownfields, NPDES, EIA, FAA, FRA and corrections data.

NPDES wastewater discharge permit2,309
Gas station (mapped facility)266
Rail grade crossing158
Air permit holder (minor source)73
Small hazardous waste generator55
Auto repair or body shop (mapped facility)52
Toxic chemical release facility (TRI)34
TRI reporting facility28
Hazardous waste transporter27
Major air pollution source19
Dry cleaner (mapped facility)17
Large hazardous waste generator13
Public airport9
Heliport8
Wastewater plant (mapped facility)6
Large greenhouse gas emitter4
Gas power plant3
Brownfield property2
Landfill (mapped facility)2
Scrapyard (mapped facility)2
Superfund (NPL) site2
EPA air quality monitor1
Commercial airport1
Biomass power plant1

Highest-severity records

The 25 records with the highest Envyrofax severity in the county, with the agency identifier to cite in a records request.

Union Processing Systems, Llc, Conroe
TRI reporting facility. Penalties $25,000.
EPA FRS registry ID 110071286504 (U.S. EPA ECHO) Agency record
Severity 10
Conroe Creosoting Company, Conroe
Superfund (NPL) site. Hazard Ranking System score 48. NPL Site.
EPA site ID TXD008091951 (U.S. EPA Superfund (SEMS/NPL)) Agency record
Severity 10
United Creosoting Co., Conroe
Superfund (NPL) site. Hazard Ranking System score 37.3. NPL Site.
EPA site ID TXD980745574 (U.S. EPA Superfund (SEMS/NPL)) Agency record
Severity 10
Union Processing Systems Llc, Conroe
Toxic chemical release facility (TRI). Chemicals: Ethylene glycol, N,N-Dimethylformamide, 1,4-Dioxane, Ammonia and 4 more. Reports carcinogens. 19,845,493 lbs released over 5 years.
TRI facility ID 7730WNNPRC16185 (U.S. EPA Toxics Release Inventory)
Severity 10
Huntsman Petrochemical Llc, Conroe
TRI reporting facility. Penalties $339,351.
EPA FRS registry ID 110000748095 (U.S. EPA ECHO) Agency record
Severity 9.8
Crown Beverage Packaging, Conroe
Toxic chemical release facility (TRI). Chemicals: Certain glycol ethers, n-Butyl alcohol, Hydrogen fluoride, Lead and 1 more. Reports carcinogens. 447,830 lbs released over 5 years.
TRI facility ID 77303CRWNC2501N (U.S. EPA Toxics Release Inventory)
Severity 8.8
Ball Metal Beverage Container Corp, Conroe
Toxic chemical release facility (TRI). Chemicals: Certain glycol ethers, n-Butyl alcohol, Hydrogen fluoride, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) and 1 more. Reports carcinogens. 282,662 lbs released over 5 years.
TRI facility ID 77303BLLPC1000N (U.S. EPA Toxics Release Inventory)
Severity 8.7
Huntsman Petrochemical Llc, Conroe
Toxic chemical release facility (TRI). Chemicals: Ammonia, Cyclohexane, Methanol, Ethylene oxide and 4 more. Reports carcinogens. 172,176 lbs released over 5 years.
TRI facility ID 77301TXCCHJEFFE (U.S. EPA Toxics Release Inventory)
Severity 8.5
Univar Solutions Usa, Conroe
Toxic chemical release facility (TRI). Chemicals: Methanol, Toluene, Xylene (mixed isomers), Methyl isobutyl ketone and 4 more. Reports carcinogens. 33,157 lbs released over 5 years.
TRI facility ID 77378SYNRGMEADO (U.S. EPA Toxics Release Inventory)
Severity 8
Hempel (Usa) Inc, Conroe
Toxic chemical release facility (TRI). Chemicals: Xylene (mixed isomers), n-Butyl alcohol, Ethylbenzene, 1,2,4-Trimethylbenzene and 4 more. Reports carcinogens. 23,957 lbs released over 5 years.
TRI facility ID 77303HMPLC600CO (U.S. EPA Toxics Release Inventory)
Severity 7.9
R&D Marble Inc., Willis
Toxic chemical release facility (TRI). Chemicals: Styrene. Reports carcinogens. 16,946 lbs released over 5 years.
TRI facility ID 77378RDMRBRTE3B (U.S. EPA Toxics Release Inventory)
Severity 7.7
Nov Downhole Conroe, Conroe
Toxic chemical release facility (TRI). Chemicals: Nickel, Chromium, Copper, Silver and 2 more. Reports carcinogens. 12,238 lbs released over 5 years.
TRI facility ID 77303NVRDH5CNRE (U.S. EPA Toxics Release Inventory)
Severity 7.6
Sigma Life Sciences, The Woodlands
Toxic chemical release facility (TRI). Chemicals: Acetonitrile, Dichloromethane, N,N-Dimethylformamide. Reports carcinogens. 9,620 lbs released over 5 years.
TRI facility ID 77380SGMGN9186S (U.S. EPA Toxics Release Inventory)
Severity 7.6
Lamberti Usa Conroe Plant 8910, Conroe
Toxic chemical release facility (TRI). Chemicals: Methanol, Formaldehyde, Toluene, Benzyl chloride and 4 more. Reports carcinogens. 5,104 lbs released over 5 years.
TRI facility ID 7730WCNLNS14292 (U.S. EPA Toxics Release Inventory)
Severity 7.3
Huntsman Petrochemical Llc, Conroe
Major air pollution source. Penalties $339,351.
EPA FRS registry ID 110000748095 (U.S. EPA ECHO) Agency record
Severity 7.3
Conroe Relocated, Conroe
EPA air quality monitor.
Record ID 483390078 (U.S. EPA AirData)
Severity 7.2
Ball Metal Beverage Container Conroe Facility, Conroe
TRI reporting facility. Penalties $287.
EPA FRS registry ID 110012492677 (U.S. EPA ECHO) Agency record
Severity 7.2
Crown Cork & Seal Usa, Conroe
TRI reporting facility. Penalties $4,000.
EPA FRS registry ID 110000462320 (U.S. EPA ECHO) Agency record
Severity 7
Nov Texas Oil Tools/Ctes Conroe, Conroe
Toxic chemical release facility (TRI). Chemicals: Copper, Nickel, Chromium, Manganese and 2 more. Reports carcinogens. 1,654 lbs released over 5 years.
TRI facility ID 7730WTXSLT377PL (U.S. EPA Toxics Release Inventory)
Severity 7
Baker Hughes - Hughes Christensen, The Woodlands
Toxic chemical release facility (TRI). Chemicals: Copper, Nickel, Manganese, Chromium. Reports carcinogens. 1,625 lbs released over 5 years.
TRI facility ID 77380HGHSC9110G (U.S. EPA Toxics Release Inventory)
Severity 7
Conroe Gas Processing Plant, Conroe
Toxic chemical release facility (TRI). Chemicals: Benzene. Reports carcinogens. 1,001 lbs released over 5 years.
TRI facility ID 7730WCNRGS1277K (U.S. EPA Toxics Release Inventory)
Severity 6.8
Huntsman Petrochemical Llc, Conroe
Large hazardous waste generator. Penalties $339,351.
EPA FRS registry ID 110000748095 (U.S. EPA ECHO) Agency record
Severity 6.8
Huntsman Petrochemical Llc, Conroe
NPDES wastewater discharge permit. Penalties $339,351.
EPA FRS registry ID 110000748095 (U.S. EPA ECHO) Agency record
Severity 6.8
Conlen Surfactant Technology Inc, Conroe
TRI reporting facility. Penalties $4,584.
EPA FRS registry ID 110034498666 (U.S. EPA ECHO) Agency record
Severity 6.4
Nov Reedhycalog, Conroe
TRI reporting facility.
EPA FRS registry ID 110039494936 (U.S. EPA ECHO) Agency record
Severity 6.4

Correctional facilities

Prisons, jails and corrections operations with an EPA facility record, and the drinking water and wastewater compliance attached to them.

No correctional facility with an EPA record is located in this county.

Discovery / public records

Records to request for Montgomery County

Texas state cancer registry
Cancer incidence counts by census tract or ZIP code, by cancer type and year (de-identified). Any cancer cluster inquiries or investigations in Montgomery County, and their findings.
Texas vital statistics office
Death certificate counts by cause of death and residence tract or ZIP code, and the years behind the mortality measures above.
Texas health department, environmental epidemiology
Health consultations or assessments by ATSDR or the state health department covering the county, and any exposure investigations.
Texas environmental agency and the U.S. EPA regional office
Compliance history, inspection reports, notices of violation, penalties and enforcement actions for each facility above, cited by EPA FRS registry ID.
Texas drinking water program
Violation notices, sampling results and sanitary surveys for the public water systems serving the county, including any system serving a correctional facility.
Department of corrections or county sheriff
Water testing, grievances and environmental health inspections for the correctional facilities listed above.

Each Envyrofax address report includes a printable records request worksheet with the custodian and the exact request wording per finding.

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