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St. Tammany Parish, Louisiana: environmental and disease records

Cancer mortality in St. Tammany Parish is 147.6 deaths per 100,000 people per year against a U.S. rate of 143.2. The strongest disease signals are Lung & bronchus deaths at 1.1 times the U.S. rate. Federal databases place 2,785 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (1,246), Industrial wastewater discharge (1,205), Small hazardous waste generator (118). One correctional facility operates in the county, at least one with health-based drinking water violations on record. 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: 30.4315, -89.9627.

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 St. Tammany Parish compared with the United States
CancerMeasureCounty rateU.S. rateTimes U.S.95% intervalYears
Melanoma of the skinNew cases35.523.81.49xSignificant32.5 to 38.62019-2023
Kidney & renal pelvisNew cases24.117.91.35xSignificant21.7 to 26.72019-2023
Brain & nervous systemNew cases7.66.21.23xSignificant6.3 to 9.12019-2023
Brain & nervous systemDeaths5.34.41.2x4.2 to 6.52020-2024
Liver & bile ductDeaths7.76.61.17x6.5 to 9.12020-2024
Non-Hodgkin lymphomaNew cases21.318.51.15xSignificant19.1 to 23.72019-2023
Liver & bile ductNew cases9.98.71.14x8.5 to 11.62019-2023
All cancerNew cases515.9453.41.14xSignificant505 to 527.12019-2023
Lung & bronchusNew cases58.951.81.14xSignificant55.3 to 62.62019-2023
Lung & bronchusDeaths33.230.21.1xSignificant30.5 to 362020-2024
Childhood cancer (under 15)New cases17.916.41.09x13.1 to 23.82019-2023
Kidney & renal pelvisDeaths3.73.41.09x2.9 to 4.82020-2024
BladderNew cases20.318.71.09x18.2 to 22.62019-2023
Non-Hodgkin lymphomaDeaths5.24.81.08x4.2 to 6.42020-2024
PancreasNew cases14.813.91.06x13 to 16.72019-2023
StomachNew cases76.61.06x5.8 to 8.42019-2023
ThyroidNew cases13.4131.03x11.5 to 15.52019-2023
All cancerDeaths147.6143.21.03x141.8 to 153.52020-2024
BladderDeaths4.24.11.02x3.3 to 5.42020-2024
EsophagusNew cases4.74.61.02x3.7 to 5.82019-2023
PancreasDeaths11.411.31.01x9.8 to 13.12020-2024
LeukemiaNew cases13.614.50.94x11.9 to 15.52019-2023
LeukemiaDeaths5.15.70.89x4.1 to 6.32020-2024
StomachDeaths2.32.70.85x1.7 to 3.22020-2024
Melanoma of the skinDeaths1.720.85x1.1 to 2.52020-2024
EsophagusDeaths3.13.70.84x2.3 to 42020-2024

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 St. Tammany Parish
MeasureCountyU.S. medianDifferenceUnit
Premature death8,688.39,842.6-12%years of life lost before age 75 per 100,000
Life expectancy76.575.3+2%years
Child mortality46.659.8-22%deaths under age 18 per 100,000
Infant mortality4.76.2-24%deaths under age 1 per 1,000 live births
Injury deaths115.196.9+19%deaths per 100,000
Drug overdose deaths50.728.6+77%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.

  • Formaldehyde23.17 per million
  • Carbon Tetrachloride2.91 per million
  • Acetaldehyde1.93 per million
  • Ethylene Oxide1.19 per million

EPA Air Quality Index 2025

Monitored on 363 days: 315 good, 1 unhealthy for sensitive groups or worse. Median AQI 37, peak 105.

Regulated facilities, sites and hazards by type

2,785 active records inside the county from EPA ECHO, TRI, Superfund, Brownfields, NPDES, EIA, FAA, FRA and corrections data.

  • NPDES wastewater discharge permit1,246
  • Industrial wastewater discharge1,205
  • Small hazardous waste generator118
  • Gas station (mapped facility)81
  • Air permit holder (minor source)43
  • Rail grade crossing24
  • Large hazardous waste generator15
  • Hazardous waste transporter13
  • Auto repair or body shop (mapped facility)7
  • Heliport6
  • Public airport5
  • Toxic chemical release facility (TRI)5
  • Brownfield property3
  • TRI reporting facility3
  • Airfield2
  • Superfund (NPL) site2
  • Wastewater plant (mapped facility)2
  • Major air pollution source1
  • EPA air quality monitor1
  • Commercial airport1
  • Correctional facility (prison or jail)1
  • Dry cleaner (mapped facility)1

Highest-severity records

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

  1. Bayou Bonfouca, Slidell

    Superfund (NPL) site. Hazard Ranking System score 29.8. NPL Site.

    EPA site ID LAD980745632 (U.S. EPA Superfund (SEMS/NPL)) Agency record

    Severity 10

  2. Madisonville Creosote Works, Madisonville

    Superfund (NPL) site. Hazard Ranking System score 48. NPL Site.

    EPA site ID LAD981522998 (U.S. EPA Superfund (SEMS/NPL)) Agency record

    Severity 10

  3. Us Army National Guard - Camp Villere Range(S), Slidell

    Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens. 61,422 lbs released over 5 years.

    TRI facility ID 7046WLSNRM34845 (U.S. EPA Toxics Release Inventory)

    Severity 8.2

  4. Arcosa Marine Products Inc Plt 1038, Madisonville

    Toxic chemical release facility (TRI). Chemicals: Xylene (mixed isomers), n-Butyl alcohol, Zinc (fume or dust), Manganese and 4 more. Reports carcinogens. 27,534 lbs released over 5 years.

    TRI facility ID 70447QTBLXHWY21 (U.S. EPA Toxics Release Inventory)

    Severity 7.9

  5. Us Army National Guard - Camp Villere Range(S), Slidell

    TRI reporting facility.

    EPA FRS registry ID 110043671032 (U.S. EPA ECHO) Agency record

    Severity 5.8

  6. Tulane Regional Primate Research Center, Covington

    Small hazardous waste generator. Penalties $15,000.

    EPA FRS registry ID 110003265840 (U.S. EPA ECHO) Agency record

    Severity 5.5

  7. Tulane Regional Primate Research Center, Covington

    NPDES wastewater discharge permit. Penalties $15,000.

    EPA FRS registry ID 110003265840 (U.S. EPA ECHO) Agency record

    Severity 5.5

  8. Covington Mobile Home Parks Llc- Chahta Mhp, Mandeville

    NPDES wastewater discharge permit. Penalties $41,046.

    EPA FRS registry ID 110011168477 (U.S. EPA ECHO) Agency record

    Severity 5.5

  9. Little Village, Inc., Abita Springs

    NPDES wastewater discharge permit. Penalties $11,414.

    EPA FRS registry ID 110012752360 (U.S. EPA ECHO) Agency record

    Severity 5.5

  10. La Vita Dolce Viviamo Llc, Mandeville

    NPDES wastewater discharge permit. Penalties $1,525.

    EPA FRS registry ID 110016684444 (U.S. EPA ECHO) Agency record

    Severity 5.5

  11. S And J Rv Park, Slidell

    NPDES wastewater discharge permit. Penalties $19,779.

    EPA FRS registry ID 110016810566 (U.S. EPA ECHO) Agency record

    Severity 5.5

  12. Oak Villa Mh Community Llc, Covington

    NPDES wastewater discharge permit. Penalties $20,955.

    EPA FRS registry ID 110020559091 (U.S. EPA ECHO) Agency record

    Severity 5.5

  13. Slidell Seafood West, Llc, Slidell

    NPDES wastewater discharge permit. Penalties $16,000.

    EPA FRS registry ID 110041250650 (U.S. EPA ECHO) Agency record

    Severity 5.3

  14. Habibi Holdings Llc, Covington

    NPDES wastewater discharge permit. Penalties $350.

    EPA FRS registry ID 110041930514 (U.S. EPA ECHO) Agency record

    Severity 5.3

  15. City Of Mandeville, Mandeville

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110000732404 (U.S. EPA ECHO) Agency record

    Severity 5

  16. Tulane Regional Primate Research Center, Covington

    Air permit holder (minor source). Penalties $15,000.

    EPA FRS registry ID 110003265840 (U.S. EPA ECHO) Agency record

    Severity 5

  17. Gulf Crane Services Inc, Covington

    NPDES wastewater discharge permit. Penalties $650.

    EPA FRS registry ID 110017857256 (U.S. EPA ECHO) Agency record

    Severity 5

  18. Csh Operations,Llc - The Greenwood, Covington

    NPDES wastewater discharge permit. Penalties $450.

    EPA FRS registry ID 110011179205 (U.S. EPA ECHO) Agency record

    Severity 4.8

  19. Magnolia Water Utility Operating Co., Llc - Oak Harbor East Stp, Slidell

    NPDES wastewater discharge permit. Penalties $2,250.

    EPA FRS registry ID 110017699472 (U.S. EPA ECHO) Agency record

    Severity 4.8

  20. Mbh Of Slidell, Llc - Matt Bowers Hyundai Slidell, Slidell

    NPDES wastewater discharge permit. Penalties $1,550.

    EPA FRS registry ID 110067183639 (U.S. EPA ECHO) Agency record

    Severity 4.8

  21. Realty Income Properties 29, Llc - Family Dollar, Bush

    NPDES wastewater discharge permit. Penalties $500.

    EPA FRS registry ID 110071180506 (U.S. EPA ECHO) Agency record

    Severity 4.8

  22. Pavestone - New Orleans La Plant, Lacombe

    Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens. 1 lbs released over 5 years.

    TRI facility ID 7044WPVSTN2995K (U.S. EPA Toxics Release Inventory)

    Severity 4.7

  23. Pearl River Navigation Llc - Yard No 1, Slidell

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110003258215 (U.S. EPA ECHO) Agency record

    Severity 4.5

  24. Lakeshore Chrysler Dodge Jeep Inc, Slidell

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110003276393 (U.S. EPA ECHO) Agency record

    Severity 4.5

  25. Value Travel Inn, Slidell

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110006647593 (U.S. EPA ECHO) Agency record

    Severity 4.5

Correctional facilities

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

  • Florida Par Juv Detention Center, Covington

    EPA FRS registry ID
    110012866577
    Water system
    LA1105081
    Health-based violations
    4 all time, 0 in 5 years
    All violations
    8
    Contaminants cited
    Coliform (TCR)
    Wastewater permit
    Yes, 7 quarters in noncompliance

    EPA detailed facility report

Discovery / public records

Records to request for St. Tammany 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 St. Tammany 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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