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Terrebonne Parish, Louisiana: environmental and disease records

Cancer mortality in Terrebonne Parish is 172 deaths per 100,000 people per year against a U.S. rate of 143.2, a statistically significant excess. The strongest disease signals are Kidney & renal pelvis deaths at 1.9 times the U.S. rate and Lung & bronchus deaths at 1.5 times the U.S. rate. Federal databases place 2,298 regulated facilities, sites and hazards inside the county, led by Industrial wastewater discharge (1,013), NPDES wastewater discharge permit (806), Air permit holder (minor source) (235). One correctional facility operates in the county. EPA AirToxScreen estimates a lifetime cancer risk from outdoor air toxics of 30 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: 29.422, -90.8311.

How this county ranks in Louisiana

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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 Terrebonne Parish compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Kidney & renal pelvis	Deaths	6.6	3.4	1.94xSignificant	4.7 to 9.1	2020-2024
Kidney & renal pelvis	New cases	28.4	17.9	1.59xSignificant	24.2 to 33	2019-2023
Stomach	Deaths	4.1	2.7	1.52x	2.6 to 6	2020-2024
Lung & bronchus	Deaths	45.8	30.2	1.52xSignificant	40.7 to 51.5	2020-2024
Lung & bronchus	New cases	75.7	51.8	1.46xSignificant	69 to 82.9	2019-2023
Bladder	New cases	25.4	18.7	1.36xSignificant	21.5 to 29.8	2019-2023
Liver & bile duct	New cases	11.4	8.7	1.31xSignificant	9 to 14.3	2019-2023
Liver & bile duct	Deaths	8.6	6.6	1.3x	6.5 to 11.2	2020-2024
Stomach	New cases	8.2	6.6	1.24x	6.1 to 10.8	2019-2023
Leukemia	Deaths	7	5.7	1.23x	5 to 9.5	2020-2024
All cancer	Deaths	172	143.2	1.2xSignificant	161.7 to 182.9	2020-2024
Non-Hodgkin lymphoma	Deaths	5.5	4.8	1.15x	3.8 to 7.9	2020-2024
All cancer	New cases	506.5	453.4	1.12xSignificant	488.7 to 524.8	2019-2023
Pancreas	Deaths	12.6	11.3	1.12x	10 to 15.7	2020-2024
Leukemia	New cases	15.9	14.5	1.1x	12.8 to 19.5	2019-2023
Pancreas	New cases	15.2	13.9	1.09x	12.3 to 18.6	2019-2023
Esophagus	Deaths	4	3.7	1.08x	2.7 to 6	2020-2024
Bladder	Deaths	4.2	4.1	1.02x	2.7 to 6.2	2020-2024
Brain & nervous system	New cases	5.8	6.2	0.94x	3.9 to 8.2	2019-2023
Brain & nervous system	Deaths	4.1	4.4	0.93x	2.6 to 6.1	2020-2024
Non-Hodgkin lymphoma	New cases	16.6	18.5	0.9x	13.5 to 20.2	2019-2023
Esophagus	New cases	3.9	4.6	0.85x	2.6 to 5.9	2019-2023
Melanoma of the skin	New cases	19.5	23.8	0.82x	16.1 to 23.5	2019-2023
Thyroid	New cases	10.4	13	0.8x	7.8 to 13.6	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 Terrebonne Parish
Measure	County	U.S. median	Difference	Unit
Premature death	11,983.6	9,842.6	+22%	years of life lost before age 75 per 100,000
Life expectancy	73.2	75.3	-3%	years
Child mortality	67	59.8	+12%	deaths under age 18 per 100,000
Infant mortality	7.8	6.2	+26%	deaths under age 1 per 1,000 live births
Injury deaths	107.2	96.9	+11%	deaths per 100,000
Drug overdose deaths	55	28.6	+92%	deaths per 100,000

Air toxics and air quality

EPA AirToxScreen 2020

Lifetime cancer risk from outdoor air toxics: 30 in a million. EPA treats 100 in a million as the upper end of acceptable risk and 1 in a million as the goal.

Formaldehyde20.08 per million
Ethylene Oxide4.21 per million
Carbon Tetrachloride2.91 per million
Acetaldehyde1.56 per million

EPA Air Quality Index 2025

Monitored on 122 days: 89 good, 0 unhealthy for sensitive groups or worse. Median AQI 42, peak 66.

Regulated facilities, sites and hazards by type

2,298 active records inside the county from EPA ECHO, TRI, Superfund, Brownfields, NPDES, EIA, FAA, FRA and corrections data.

Industrial wastewater discharge1,013
NPDES wastewater discharge permit806
Air permit holder (minor source)235
Small hazardous waste generator122
Hazardous waste transporter33
Large hazardous waste generator24
Major air pollution source12
Brownfield property12
Toxic chemical release facility (TRI)9
TRI reporting facility8
Heliport6
Rail grade crossing6
Public airport3
Large greenhouse gas emitter3
EPA air quality monitor1
Airfield1
Commercial airport1
Correctional facility (prison or jail)1
Gas power plant1
Superfund (NPL) site1

Highest-severity records

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

Delta Shipyard, Houma
Superfund (NPL) site. Hazard Ranking System score 48.1. NPL Site.
EPA site ID LAD058475419 (U.S. EPA Superfund (SEMS/NPL)) Agency record
Severity 10
Laship Llc, Houma
Toxic chemical release facility (TRI). Chemicals: Xylene (mixed isomers), n-Butyl alcohol, Zinc compounds, Copper compounds and 4 more. Reports carcinogens. 170,730 lbs released over 5 years.
TRI facility ID 7036WLSHPL367DI (U.S. EPA Toxics Release Inventory)
Severity 8.5
Laship Llc, Houma
TRI reporting facility.
EPA FRS registry ID 110043851230 (U.S. EPA ECHO) Agency record
Severity 7.9
Bollinger Houma Shipyards Llc -Bollinger Houma Shipyards, Houma
TRI reporting facility.
EPA FRS registry ID 110071131881 (U.S. EPA ECHO) Agency record
Severity 7.7
National Oilwell Varco Lp, Houma
TRI reporting facility.
EPA FRS registry ID 110003314529 (U.S. EPA ECHO) Agency record
Severity 7.4
Hunting Energy Services Inc - Schriever Facility, Schriever
TRI reporting facility.
EPA FRS registry ID 110055099165 (U.S. EPA ECHO) Agency record
Severity 7
National Oilwell Varco Lp, Houma
Toxic chemical release facility (TRI). Chemicals: Nickel, Chromium, Ethylene glycol, Manganese and 1 more. Reports carcinogens. 1,468 lbs released over 5 years.
TRI facility ID 7036WNTNLL13VEN (U.S. EPA Toxics Release Inventory)
Severity 6.9
Vallourec Tube-Alloy, Llc, Houma
TRI reporting facility.
EPA FRS registry ID 110000903719 (U.S. EPA ECHO) Agency record
Severity 6.8
Bollinger Houma Shipyards Llc -Bollinger Houma Shipyards, Houma
Major air pollution source.
EPA FRS registry ID 110071131881 (U.S. EPA ECHO) Agency record
Severity 6.5
Gulf Island Llc - Gulf Island Fabrication, Houma
TRI reporting facility.
EPA FRS registry ID 110012382803 (U.S. EPA ECHO) Agency record
Severity 6.5
Bollinger Houma Shipyards Llc, Houma
Toxic chemical release facility (TRI). Chemicals: Manganese, Nickel, Chromium, Copper and 2 more. Reports carcinogens. 348 lbs released over 5 years.
TRI facility ID 7036WBLLNG31BLL (U.S. EPA Toxics Release Inventory)
Severity 6.5
Gulf Island Fabrication Llc, Houma
Toxic chemical release facility (TRI). Chemicals: Xylene (mixed isomers), Manganese, Lead compounds, Propylene and 1 more. 10,616 lbs released over 5 years.
TRI facility ID 70363GLFSL583TH (U.S. EPA Toxics Release Inventory)
Severity 6.1
Performance Energy Services Llc, Houma
TRI reporting facility.
EPA FRS registry ID 110033657424 (U.S. EPA ECHO) Agency record
Severity 6.1
Oil States Skagit Smatco Llc - Houma Manufacturing Facility, Houma
TRI reporting facility.
EPA FRS registry ID 110002129125 (U.S. EPA ECHO) Agency record
Severity 6
Thoma-Sea Marine Constructors Llc - Houma Facility, Houma
Large hazardous waste generator.
EPA FRS registry ID 110027225483 (U.S. EPA ECHO) Agency record
Severity 6
Bollinger Houma Shipyards Llc -Bollinger Houma Shipyards, Houma
Large hazardous waste generator.
EPA FRS registry ID 110071131881 (U.S. EPA ECHO) Agency record
Severity 6
Bollinger Houma Shipyards Llc -Bollinger Houma Shipyards, Houma
NPDES wastewater discharge permit.
EPA FRS registry ID 110071131881 (U.S. EPA ECHO) Agency record
Severity 6
Performance Energy Services Llc, Houma
Toxic chemical release facility (TRI). Chemicals: Manganese, Nickel, Chromium, Propylene and 1 more. Reports carcinogens. 55 lbs released over 5 years.
TRI facility ID 7036WPRFRM25NAM (U.S. EPA Toxics Release Inventory)
Severity 5.8
Vallourec Tube-Alloy, Llc, Houma
Large hazardous waste generator.
EPA FRS registry ID 110000903719 (U.S. EPA ECHO) Agency record
Severity 5.8
Modern American Recycling Service Inc, Gibson
Small hazardous waste generator. Penalties $101,694.
EPA FRS registry ID 110003361237 (U.S. EPA ECHO) Agency record
Severity 5.5
Modern American Recycling Service Inc, Gibson
NPDES wastewater discharge permit. Penalties $101,694.
EPA FRS registry ID 110003361237 (U.S. EPA ECHO) Agency record
Severity 5.5
American Recovery Llc, Houma
NPDES wastewater discharge permit. Penalties $8,750.
EPA FRS registry ID 110060235990 (U.S. EPA ECHO) Agency record
Severity 5.5
Fat Tails Seafood Llc, Houma
NPDES wastewater discharge permit. Penalties $650.
EPA FRS registry ID 110069996071 (U.S. EPA ECHO) Agency record
Severity 5.5
Gulf South Armature, Inc, Houma
NPDES wastewater discharge permit. Penalties $2,273.
EPA FRS registry ID 110071355178 (U.S. EPA ECHO) Agency record
Severity 5.5
Oil States Industries - Houma, Houma
Toxic chemical release facility (TRI). Chemicals: Propylene, Manganese. 1,653 lbs released over 5 years.
TRI facility ID 70363SKGTS1180M (U.S. EPA Toxics Release Inventory)
Severity 5.5

Correctional facilities

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

Terrebonne Parish Work Release, Houma
EPA FRS registry ID
110041913533
Wastewater permit
Yes
EPA detailed facility report

Discovery / public records

Records to request for Terrebonne Parish

Louisiana 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 Terrebonne Parish, and their findings.
Louisiana vital statistics office
Death certificate counts by cause of death and residence tract or ZIP code, and the years behind the mortality measures above.
Louisiana health department, environmental epidemiology
Health consultations or assessments by ATSDR or the state health department covering the county, and any exposure investigations.
Louisiana 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.
Louisiana 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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