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Cass County, Missouri: environmental and disease records

Cancer mortality in Cass County is 150.3 deaths per 100,000 people per year against a U.S. rate of 143.2. The strongest disease signals are Bladder deaths at 1.7 times the U.S. rate and Lung & bronchus deaths at 1.2 times the U.S. rate. Federal databases place 527 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (218), Rail grade crossing (88), Air permit holder (minor source) (56). 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: 38.6455, -94.3641.

How this county ranks in Missouri

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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 Cass County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Bladder	Deaths	6.9	4.1	1.68xSignificant	5.2 to 9.2	2020-2024
Leukemia	New cases	19.9	14.5	1.37xSignificant	16.6 to 23.7	2019-2023
Brain & nervous system	New cases	8.1	6.2	1.31x	5.9 to 10.8	2019-2023
Leukemia	Deaths	7.1	5.7	1.25x	5.3 to 9.4	2020-2024
Esophagus	New cases	5.6	4.6	1.22x	4 to 7.7	2019-2023
Kidney & renal pelvis	New cases	21.5	17.9	1.2xSignificant	18.1 to 25.3	2019-2023
Lung & bronchus	Deaths	36.1	30.2	1.2xSignificant	31.9 to 40.7	2020-2024
Non-Hodgkin lymphoma	New cases	21.6	18.5	1.17x	18.2 to 25.5	2019-2023
Lung & bronchus	New cases	59.8	51.8	1.15xSignificant	54.3 to 65.7	2019-2023
Childhood cancer (under 15)	New cases	18.5	16.4	1.13x	11.3 to 28.7	2019-2023
Non-Hodgkin lymphoma	Deaths	5.1	4.8	1.06x	3.6 to 7.1	2020-2024
All cancer	Deaths	150.3	143.2	1.05x	141.5 to 159.6	2020-2024
Pancreas	Deaths	11.8	11.3	1.04x	9.4 to 14.6	2020-2024
All cancer	New cases	460.8	453.4	1.02x	444.6 to 477.5	2019-2023
Kidney & renal pelvis	Deaths	3.3	3.4	0.97x	2.2 to 5	2020-2024
Liver & bile duct	Deaths	6.2	6.6	0.94x	4.6 to 8.3	2020-2024
Pancreas	New cases	13	13.9	0.94x	10.5 to 16	2019-2023
Brain & nervous system	Deaths	4.1	4.4	0.93x	2.7 to 6.1	2020-2024
Bladder	New cases	16.9	18.7	0.9x	14 to 20.2	2019-2023
Liver & bile duct	New cases	7.5	8.7	0.86x	5.7 to 9.8	2019-2023
Melanoma of the skin	New cases	20.5	23.8	0.86x	17.1 to 24.3	2019-2023
Esophagus	Deaths	3	3.7	0.81x	1.9 to 4.6	2020-2024
Stomach	New cases	5.3	6.6	0.8x	3.8 to 7.4	2019-2023
Thyroid	New cases	10.1	13	0.78x	7.6 to 13.1	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 Cass County
Measure	County	U.S. median	Difference	Unit
Premature death	7,908.4	9,842.6	-20%	years of life lost before age 75 per 100,000
Life expectancy	77	75.3	+2%	years
Child mortality	49.4	59.8	-17%	deaths under age 18 per 100,000
Infant mortality	4.3	6.2	-30%	deaths under age 1 per 1,000 live births
Injury deaths	88	96.9	-9%	deaths per 100,000
Drug overdose deaths	18.7	28.6	-35%	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.

Formaldehyde19.56 per million
Carbon Tetrachloride2.91 per million
Acetaldehyde1.93 per million
Naphthalene1.33 per million

EPA Air Quality Index 2025

Monitored on 362 days: 281 good, 1 unhealthy for sensitive groups or worse. Median AQI 41, peak 123.

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit218
Rail grade crossing88
Air permit holder (minor source)56
Gas station (mapped facility)39
Industrial wastewater discharge33
Small hazardous waste generator17
Auto repair or body shop (mapped facility)15
Public airport13
Toxic chemical release facility (TRI)11
TRI reporting facility9
Brownfield property7
Large hazardous waste generator4
Major air pollution source3
Large greenhouse gas emitter3
Gas power plant3
Wastewater plant (mapped facility)2
EPA air quality monitor1
Commercial airport1
Dry cleaner (mapped facility)1
Hazardous waste transporter1
Heliport1
Scrapyard (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.

Sioux Chief, Peculiar
Toxic chemical release facility (TRI). Chemicals: Methanol, Copper, Di(2-ethylhexyl) phthalate. Reports carcinogens. 31,424 lbs released over 5 years.
TRI facility ID 6407WSXCHF2411S (U.S. EPA Toxics Release Inventory)
Severity 8
Acci Specialty Materials Llc, Harrisonville
Toxic chemical release facility (TRI). Chemicals: Dichloromethane, Dimethylamine, p-Chlorophenyl isocyanate, Diisocyanates. Reports carcinogens. 9,423 lbs released over 5 years.
TRI facility ID 64701CHMSY1701V (U.S. EPA Toxics Release Inventory)
Severity 7.6
Rom, Belton
Toxic chemical release facility (TRI). Chemicals: Manganese, Copper, Chromium, Lead. Reports carcinogens. 1,623 lbs released over 5 years.
TRI facility ID 6401WRMXXX68E16 (U.S. EPA Toxics Release Inventory)
Severity 7
Acci Specialty Materials Llc, Harrisonville
TRI reporting facility.
EPA FRS registry ID 110000823057 (U.S. EPA ECHO) Agency record
Severity 6.6
Rom Corporation, Belton
TRI reporting facility.
EPA FRS registry ID 110011095180 (U.S. EPA ECHO) Agency record
Severity 5.3
Church & Dwight Co. Inc., Harrisonville
Toxic chemical release facility (TRI). Chemicals: Nitrilotriacetic acid trisodium salt, Nitrilotriacetic acid, 1,3,4,6,7,8-Hexahydro-4,6,6,7,8,8-hexamethylcyclopenta[g]-2-benzopyran. Reports carcinogens. 9 lbs released over 5 years.
TRI facility ID 64701GRNTHPOBOX (U.S. EPA Toxics Release Inventory)
Severity 5.3
Harrisonville Pws, Harrisonville
NPDES wastewater discharge permit.
EPA FRS registry ID 110000737132 (U.S. EPA ECHO) Agency record
Severity 5
Materials Packaging Corp, Harrisonville
Toxic chemical release facility (TRI). Chemicals: Lead, Lead compounds, Lead And Lead Compounds, Mercury And Mercury Compounds. Reports carcinogens.
TRI facility ID 64701MTRLS2318S (U.S. EPA Toxics Release Inventory)
Severity 4.6
Cass County Midway R-1 Schools Lagoon, Cleveland
NPDES wastewater discharge permit.
EPA FRS registry ID 110006727603 (U.S. EPA ECHO) Agency record
Severity 4.5
Drexel North Wwtf, Drexel
NPDES wastewater discharge permit.
EPA FRS registry ID 110009695614 (U.S. EPA ECHO) Agency record
Severity 4.5
Harrisonville South Wwtp, Harrisonville
NPDES wastewater discharge permit.
EPA FRS registry ID 110009866485 (U.S. EPA ECHO) Agency record
Severity 4.5
Freeman Pws, Freeman
NPDES wastewater discharge permit.
EPA FRS registry ID 110009872744 (U.S. EPA ECHO) Agency record
Severity 4.5
Archie Wwtf, Archie
NPDES wastewater discharge permit.
EPA FRS registry ID 110009877197 (U.S. EPA ECHO) Agency record
Severity 4.5
Peculiar Wwtp, Peculiar
NPDES wastewater discharge permit.
EPA FRS registry ID 110015854538 (U.S. EPA ECHO) Agency record
Severity 4.5
Mmt Technology Inc, Garden City
Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens.
TRI facility ID 64747MMTTC31E28 (U.S. EPA Toxics Release Inventory)
Severity 4.5
Plant 8 - Port-0441 - Garden City, Garden City
Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens.
TRI facility ID 6474WPLNTPM7NXX (U.S. EPA Toxics Release Inventory)
Severity 4.5
Church & Dwight Company, Harrisonville
TRI reporting facility.
EPA FRS registry ID 110011105188 (U.S. EPA ECHO) Agency record
Severity 4.4
Archie Wtp, Archie
NPDES wastewater discharge permit.
EPA FRS registry ID 110009012585 (U.S. EPA ECHO) Agency record
Severity 4.3
Belton Wwtf, Belton
NPDES wastewater discharge permit.
EPA FRS registry ID 110010821290 (U.S. EPA ECHO) Agency record
Severity 4.3
Crown Trailer Sales Inc, Belton
NPDES wastewater discharge permit.
EPA FRS registry ID 110011106873 (U.S. EPA ECHO) Agency record
Severity 4.3
Neco Seed Farms Inc, Garden City
NPDES wastewater discharge permit.
EPA FRS registry ID 110022467640 (U.S. EPA ECHO) Agency record
Severity 4.3
Richard Gebaur-South
EPA air quality monitor.
Record ID 290370003 (U.S. EPA AirData)
Severity 4.2
Southeast Wood, Pleasant Hill
TRI reporting facility.
EPA FRS registry ID 110000442904 (U.S. EPA ECHO) Agency record
Severity 4
Ufp Harrisonville, Llc, Harrisonville
TRI reporting facility.
EPA FRS registry ID 110000443743 (U.S. EPA ECHO) Agency record
Severity 4
Whistle Redi-Mix Inc-Pleasant Hill Site, Pleasant Hill
TRI reporting facility.
EPA FRS registry ID 110009035640 (U.S. EPA ECHO) Agency record
Severity 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 Cass County

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