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Webb County, Texas: environmental and disease records

Cancer mortality in Webb County is 135.9 deaths per 100,000 people per year against a U.S. rate of 143.2. The strongest disease signals are Liver & bile duct deaths at 2.7 times the U.S. rate and Kidney & renal pelvis deaths at 2.1 times the U.S. rate. Federal databases place 937 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (552), Rail grade crossing (142), Gas station (mapped facility) (105). 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: 27.7321, -99.2862.

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 Webb County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Liver & bile duct	New cases	24.9	8.7	2.86xSignificant	22.1 to 28	2019-2023
Liver & bile duct	Deaths	17.5	6.6	2.65xSignificant	15.1 to 20.1	2020-2024
Kidney & renal pelvis	Deaths	7	3.4	2.06xSignificant	5.5 to 8.7	2020-2024
Stomach	Deaths	5.5	2.7	2.04xSignificant	4.2 to 7.1	2020-2024
Kidney & renal pelvis	New cases	26.6	17.9	1.49xSignificant	23.6 to 29.8	2019-2023
Stomach	New cases	8	6.6	1.21x	6.3 to 9.8	2019-2023
Childhood cancer (under 15)	New cases	17.4	16.4	1.06x	13.3 to 22.3	2019-2023
All cancer	Deaths	135.9	143.2	0.95x	129 to 143	2020-2024
Pancreas	Deaths	10.4	11.3	0.92x	8.6 to 12.5	2020-2024
Pancreas	New cases	12.4	13.9	0.89x	10.4 to 14.7	2019-2023
Leukemia	New cases	12.6	14.5	0.87x	10.6 to 14.9	2019-2023
All cancer	New cases	374.6	453.4	0.83x	363.2 to 386.2	2019-2023
Non-Hodgkin lymphoma	New cases	15.2	18.5	0.82x	13 to 17.7	2019-2023
Non-Hodgkin lymphoma	Deaths	3.9	4.8	0.81x	2.8 to 5.2	2020-2024
Brain & nervous system	New cases	5	6.2	0.81x	3.8 to 6.5	2019-2023
Brain & nervous system	Deaths	3.5	4.4	0.8x	2.5 to 4.7	2020-2024
Leukemia	Deaths	4.4	5.7	0.77x	3.3 to 5.9	2020-2024
Thyroid	New cases	9.4	13	0.72x	7.7 to 11.4	2019-2023
Bladder	Deaths	2.8	4.1	0.68x	1.9 to 4	2020-2024
Esophagus	New cases	2.8	4.6	0.61x	1.9 to 4	2019-2023
Bladder	New cases	11.2	18.7	0.6x	9.3 to 13.4	2019-2023
Lung & bronchus	Deaths	15.8	30.2	0.52x	13.5 to 18.4	2020-2024
Esophagus	Deaths	1.8	3.7	0.49x	1.1 to 2.8	2020-2024
Lung & bronchus	New cases	23.9	51.8	0.46x	21 to 27.1	2019-2023
Melanoma of the skin	New cases	3.4	23.8	0.14x	2.4 to 4.7	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 Webb County
Measure	County	U.S. median	Difference	Unit
Premature death	8,920.2	9,842.6	-9%	years of life lost before age 75 per 100,000
Life expectancy	75.8	75.3	+1%	years
Child mortality	47.8	59.8	-20%	deaths under age 18 per 100,000
Infant mortality	4.9	6.2	-21%	deaths under age 1 per 1,000 live births
Injury deaths	44.2	96.9	-54%	deaths per 100,000
Drug overdose deaths	17	28.6	-41%	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.

Formaldehyde20.28 per million
Ethylene Oxide12.61 per million
Carbon Tetrachloride2.83 per million
Acetaldehyde1.04 per million

EPA Air Quality Index 2025

Monitored on 365 days: 182 good, 5 unhealthy for sensitive groups or worse. Median AQI 51, peak 121.

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit552
Rail grade crossing142
Gas station (mapped facility)105
Small hazardous waste generator21
Hazardous waste transporter18
Major air pollution source17
Air permit holder (minor source)15
Auto repair or body shop (mapped facility)12
Public airport10
Brownfield property10
Toxic chemical release facility (TRI)7
TRI reporting facility6
Wind power plant4
EPA air quality monitor3
Heliport3
Scrapyard (mapped facility)3
Wastewater plant (mapped facility)3
Large hazardous waste generator2
Commercial airport1
Landfill (mapped facility)1
Gas power plant1
Solar 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.

Laredo Border Patrol Sector Hq Tx11589, Laredo
Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens. 59,172 lbs released over 5 years.
TRI facility ID 7804WLRDBR381SU (U.S. EPA Toxics Release Inventory)
Severity 8.2
Thompsonville Gas Plant, Mirando City
Toxic chemical release facility (TRI). Chemicals: n-Hexane, Benzene, Diethanolamine. Reports carcinogens. 36,001 lbs released over 5 years.
TRI facility ID 7836WTHMPS122SF (U.S. EPA Toxics Release Inventory)
Severity 8
Midwest Sterilization Corp, Laredo
Toxic chemical release facility (TRI). Chemicals: Ethylene oxide, Ethylene glycol. Reports carcinogens. 17,297 lbs released over 5 years.
TRI facility ID 78045MDWST121GE (U.S. EPA Toxics Release Inventory)
Severity 7.8
Pilot Thomas Logistcs Llc - Laredo, Laredo
Toxic chemical release facility (TRI). Chemicals: Methanol, n-Hexane, Ethylene glycol, Polycyclic aromatic compounds and 4 more. Reports carcinogens. 3,386 lbs released over 5 years.
TRI facility ID 7804WTHMSP13497 (U.S. EPA Toxics Release Inventory)
Severity 7.2
Reladyne Sun Coast Llc, Laredo
Toxic chemical release facility (TRI). Chemicals: Toluene, Xylene (mixed isomers), n-Hexane, Ethylene glycol and 4 more. Reports carcinogens. 550 lbs released over 5 years.
TRI facility ID 7804WSNCST13511 (U.S. EPA Toxics Release Inventory)
Severity 6.6
World Trade Bridge, Laredo
EPA air quality monitor.
Record ID 484790313 (U.S. EPA AirData)
Severity 6.6
Laredo U.S. Border Patrol Training Facility, Laredo
TRI reporting facility.
EPA FRS registry ID 110061431053 (U.S. EPA ECHO) Agency record
Severity 5.9
Laredo City Of Sewer Plant, Laredo
NPDES wastewater discharge permit.
EPA FRS registry ID 110006620898 (U.S. EPA ECHO) Agency record
Severity 5.8
Mo-Vac Service, Laredo
NPDES wastewater discharge permit. Penalties $21,231.
EPA FRS registry ID 110070688047 (U.S. EPA ECHO) Agency record
Severity 5.5
Midwest Sterilization Corporation - Laredo, Laredo
TRI reporting facility.
EPA FRS registry ID 110024942678 (U.S. EPA ECHO) Agency record
Severity 5.5
Thomas Petroleum, Laredo
TRI reporting facility.
EPA FRS registry ID 110005166122 (U.S. EPA ECHO) Agency record
Severity 5.4
Laredo Intl, Laredo
Commercial airport. O.
Record ID LRD (FAA / U.S. DOT)
Severity 5
Fasken Compressor Station, Webb
Major air pollution source. Penalties $2,800.
EPA FRS registry ID 110064844682 (U.S. EPA ECHO) Agency record
Severity 4.8
Meadors Amine Plant, Encinal
Major air pollution source. Penalties $11,475.
EPA FRS registry ID 110064844959 (U.S. EPA ECHO) Agency record
Severity 4.5
Gates Lp Compressor Station, Laredo
Major air pollution source. Penalties $7,650.
EPA FRS registry ID 110070106467 (U.S. EPA ECHO) Agency record
Severity 4.5
Plm Steel Pipes & Tubes, Laredo
Toxic chemical release facility (TRI). Chemicals: Nickel, Chromium, Zinc compounds, Manganese and 1 more. Reports carcinogens.
TRI facility ID 7804WPRLMS122AU (U.S. EPA Toxics Release Inventory)
Severity 4.5
Unitec Wwtp, Laredo
NPDES wastewater discharge permit.
EPA FRS registry ID 110039693579 (U.S. EPA ECHO) Agency record
Severity 4.3
Plm Steel Tubes, Laredo
TRI reporting facility.
EPA FRS registry ID 110043694730 (U.S. EPA ECHO) Agency record
Severity 4
Reveille Cryogenic Plant, Laredo
TRI reporting facility.
EPA FRS registry ID 110059659793 (U.S. EPA ECHO) Agency record
Severity 4
Sun Coast Resources, Laredo
TRI reporting facility.
EPA FRS registry ID 110062150602 (U.S. EPA ECHO) Agency record
Severity 4
North Laredo Wwtp, Laredo
NPDES wastewater discharge permit.
EPA FRS registry ID 110055045650 (U.S. EPA ECHO) Agency record
Severity 3.8
La Perla Compressor Station, Laredo
Major air pollution source.
EPA FRS registry ID 110007204952 (U.S. EPA ECHO) Agency record
Severity 3.5
Laredo, Laredo
Major air pollution source.
EPA FRS registry ID 110008060846 (U.S. EPA ECHO) Agency record
Severity 3.5
City Of Laredo Landfill, Laredo
Major air pollution source.
EPA FRS registry ID 110024445527 (U.S. EPA ECHO) Agency record
Severity 3.5
Diamond Shamrock Refining & Mrkg, Laredo
Major air pollution source.
EPA FRS registry ID 110031503326 (U.S. EPA ECHO) Agency record
Severity 3.5

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 Webb 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 Webb 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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