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Cobb County, Georgia: environmental and disease records

Cancer mortality in Cobb County is 129.6 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 3,737 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (2,090), Industrial wastewater discharge (704), Gas station (mapped facility) (251). 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: 33.9136, -84.5843.

How this county ranks in Georgia

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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 Cobb County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Thyroid	Deaths	0.6	0.5	1.2x	0.3 to 0.8	2020-2024
Childhood cancer (under 15)	New cases	17.4	16.4	1.06x	14.5 to 20.7	2019-2023
All cancer	New cases	466.6	453.4	1.03xSignificant	459.9 to 473.4	2019-2023
Melanoma of the skin	New cases	24.3	23.8	1.02x	22.8 to 25.9	2019-2023
Brain & nervous system	New cases	6.3	6.2	1.02x	5.5 to 7.1	2019-2023
Bladder	New cases	18.9	18.7	1.01x	17.5 to 20.3	2019-2023
Non-Hodgkin lymphoma	New cases	18.5	18.5	1x	17.1 to 19.9	2019-2023
Stomach	New cases	6.6	6.6	1x	5.8 to 7.4	2019-2023
Thyroid	New cases	12.9	13	0.99x	11.8 to 14.1	2019-2023
Non-Hodgkin lymphoma	Deaths	4.7	4.8	0.98x	4.1 to 5.5	2020-2024
Pancreas	New cases	13.6	13.9	0.98x	12.5 to 14.9	2019-2023
Kidney & renal pelvis	New cases	17.5	17.9	0.98x	16.3 to 18.9	2019-2023
Brain & nervous system	Deaths	4.2	4.4	0.95x	3.6 to 4.9	2020-2024
Kidney & renal pelvis	Deaths	3.2	3.4	0.94x	2.6 to 3.8	2020-2024
Stomach	Deaths	2.5	2.7	0.93x	2.1 to 3.1	2020-2024
Leukemia	New cases	13.3	14.5	0.92x	12.1 to 14.5	2019-2023
All cancer	Deaths	129.6	143.2	0.91x	126 to 133.3	2020-2024
Pancreas	Deaths	10.2	11.3	0.9x	9.3 to 11.3	2020-2024
Esophagus	Deaths	3.3	3.7	0.89x	2.8 to 3.9	2020-2024
Leukemia	Deaths	5	5.7	0.88x	4.3 to 5.8	2020-2024
Esophagus	New cases	4	4.6	0.87x	3.4 to 4.6	2019-2023
Bladder	Deaths	3.5	4.1	0.85x	2.9 to 4.2	2020-2024
Melanoma of the skin	Deaths	1.7	2	0.85x	1.3 to 2.2	2020-2024
Lung & bronchus	New cases	43.5	51.8	0.84x	41.5 to 45.7	2019-2023
Liver & bile duct	New cases	7.2	8.7	0.83x	6.4 to 8.1	2019-2023
Lung & bronchus	Deaths	22.9	30.2	0.76x	21.4 to 24.4	2020-2024
Liver & bile duct	Deaths	5	6.6	0.76x	4.4 to 5.8	2020-2024

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 Cobb County
Measure	County	U.S. median	Difference	Unit
Premature death	6,457.6	9,842.6	-34%	years of life lost before age 75 per 100,000
Life expectancy	79.1	75.3	+5%	years
Child mortality	43.9	59.8	-27%	deaths under age 18 per 100,000
Infant mortality	5.5	6.2	-11%	deaths under age 1 per 1,000 live births
Injury deaths	62.6	96.9	-35%	deaths per 100,000
Drug overdose deaths	22.6	28.6	-21%	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.

Formaldehyde26.9 per million
Carbon Tetrachloride2.86 per million
Acetaldehyde2.52 per million
Benzene1.59 per million

EPA Air Quality Index 2025

Monitored on 245 days: 229 good, 0 unhealthy for sensitive groups or worse. Median AQI 35, peak 74.

Regulated facilities, sites and hazards by type

3,737 active records inside the county from EPA ECHO, TRI, Superfund, Brownfields, NPDES, EIA, FAA, FRA and corrections data.

NPDES wastewater discharge permit2,090
Industrial wastewater discharge704
Gas station (mapped facility)251
Auto repair or body shop (mapped facility)211
Air permit holder (minor source)153
Rail grade crossing77
Small hazardous waste generator73
Dry cleaner (mapped facility)58
Toxic chemical release facility (TRI)31
TRI reporting facility30
Large hazardous waste generator20
Major air pollution source9
Hazardous waste transporter8
Heliport5
Crematorium (mapped facility)3
Commercial airport2
Large greenhouse gas emitter2
Landfill (mapped facility)2
Scrapyard (mapped facility)2
Wastewater plant (mapped facility)2
EPA air quality monitor1
Gas power plant1
Oil-fired 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.

Kemira Water Solutions, Inc. - Marietta Plant, Marietta
TRI reporting facility. Penalties $65,250.
EPA FRS registry ID 110000355838 (U.S. EPA ECHO) Agency record
Severity 9.3
Lynx Chemical Group, Smyrna Plant, Smyrna
TRI reporting facility. Penalties $112,700.
EPA FRS registry ID 110015326869 (U.S. EPA ECHO) Agency record
Severity 9.3
Plant Mcdonough Combined Cycle, Atlanta
TRI reporting facility. Penalties $56,156.
EPA FRS registry ID 110000355972 (U.S. EPA ECHO) Agency record
Severity 8.9
Oldcastle Infrastructure - Acworth, Acworth
Toxic chemical release facility (TRI). Chemicals: Methyl methacrylate, Styrene, Lead compounds. Reports carcinogens. 50,866 lbs released over 5 years.
TRI facility ID 3010WLDCST3NEWB (U.S. EPA Toxics Release Inventory)
Severity 8.1
Bluescope Coated Products Llc, Marietta
Toxic chemical release facility (TRI). Chemicals: Xylene (mixed isomers), n-Butyl alcohol, Certain glycol ethers, 1,2,4-Trimethylbenzene and 4 more. Reports carcinogens. 43,663 lbs released over 5 years.
TRI facility ID 30062MTLCT1150M (U.S. EPA Toxics Release Inventory)
Severity 8.1
The Dow Chemical Company, Marietta
TRI reporting facility.
EPA FRS registry ID 110015968416 (U.S. EPA ECHO) Agency record
Severity 8
Mcdonough/Atkinson Steam Electric Generating Plant, Atlanta
Toxic chemical release facility (TRI). Chemicals: Ammonia, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Chlorine. 2,550,544 lbs released over 5 years.
TRI facility ID 30080MCDNG5551S (U.S. EPA Toxics Release Inventory)
Severity 7.9
First American Resources Co, Mableton
Toxic chemical release facility (TRI). Chemicals: Xylene (mixed isomers), Certain glycol ethers, Methyl isobutyl ketone, Ethylbenzene and 4 more. Reports carcinogens. 18,526 lbs released over 5 years.
TRI facility ID 30059CLCTR2030R (U.S. EPA Toxics Release Inventory)
Severity 7.8
Old Castle - Acworth, Acworth
TRI reporting facility. Penalties $5,000.
EPA FRS registry ID 110064666160 (U.S. EPA ECHO) Agency record
Severity 7.6
Mplx Terminals Llc - Powder Springs Ga Terminal, Austell
Toxic chemical release facility (TRI). Chemicals: n-Hexane, Toluene, Benzene, Xylene (mixed isomers) and 4 more. Reports carcinogens. 8,353 lbs released over 5 years.
TRI facility ID 30106MRTHN3895A (U.S. EPA Toxics Release Inventory)
Severity 7.5
Amrep Inc, Marietta
TRI reporting facility.
EPA FRS registry ID 110000355865 (U.S. EPA ECHO) Agency record
Severity 7.4
Avient Corp, Kennesaw
Toxic chemical release facility (TRI). Chemicals: Certain glycol ethers, 1,2,4-Trimethylbenzene, Polycyclic aromatic compounds, Zinc compounds and 4 more. Reports carcinogens. 4,754 lbs released over 5 years.
TRI facility ID 30144FLXBL8155C (U.S. EPA Toxics Release Inventory)
Severity 7.3
Kemira Water Solutions Inc., Marietta
Toxic chemical release facility (TRI). Chemicals: Ammonia, Acrylic acid, Toluene, Butyl acrylate and 4 more. Reports carcinogens. 3,838 lbs released over 5 years.
TRI facility ID 30060NRTHC1525C (U.S. EPA Toxics Release Inventory)
Severity 7.3
Dow Chemical Co, Marietta
Toxic chemical release facility (TRI). Chemicals: Diisocyanates, Toluene diisocyanate (mixed isomers), Formic acid, Triethylamine and 2 more. Reports carcinogens. 3,420 lbs released over 5 years.
TRI facility ID 30062FLXBL1881W (U.S. EPA Toxics Release Inventory)
Severity 7.2
Tip Top Poultry, Marietta
TRI reporting facility.
EPA FRS registry ID 110000520080 (U.S. EPA ECHO) Agency record
Severity 7.1
Kemira Water Solutions, Inc. - Marietta Plant, Marietta
Large hazardous waste generator. Penalties $65,250.
EPA FRS registry ID 110000355838 (U.S. EPA ECHO) Agency record
Severity 7
Lynx Chemical Group, Smyrna Plant, Smyrna
Large hazardous waste generator. Penalties $112,700.
EPA FRS registry ID 110015326869 (U.S. EPA ECHO) Agency record
Severity 7
Thomas Concrete - Kennesaw Plant #3500, Kennesaw
TRI reporting facility.
EPA FRS registry ID 110064411881 (U.S. EPA ECHO) Agency record
Severity 7
First American Resources Corporation, Mableton
TRI reporting facility.
EPA FRS registry ID 110000500878 (U.S. EPA ECHO) Agency record
Severity 6.9
Compass Chemical International Llc, Smyrna
Toxic chemical release facility (TRI). Chemicals: Formaldehyde, Methanol, Ammonia, Bis(2-chloroethyl) ether and 2 more. Reports carcinogens. 1,408 lbs released over 5 years.
TRI facility ID 30082MYCHM5544O (U.S. EPA Toxics Release Inventory)
Severity 6.9
Ajay Na Llc, Powder Springs
Toxic chemical release facility (TRI). Chemicals: tert-Butyl alcohol, Selenium And Selenium Compounds, Copper And Copper Compounds, Nitric acid and 4 more. Reports carcinogens. 1,046 lbs released over 5 years.
TRI facility ID 30073JYCHM1400I (U.S. EPA Toxics Release Inventory)
Severity 6.8
Metal Coaters, Marietta
TRI reporting facility. Penalties $5,000.
EPA FRS registry ID 110056941591 (U.S. EPA ECHO) Agency record
Severity 6.8
Noonday Creek Wrf, Kennesaw
NPDES wastewater discharge permit. Penalties $80,110.
EPA FRS registry ID 110000525717 (U.S. EPA ECHO) Agency record
Severity 6.8
Arylessence Incorporated, Marietta
TRI reporting facility.
EPA FRS registry ID 110002101092 (U.S. EPA ECHO) Agency record
Severity 6.8
Glock Inc, Smyrna
TRI reporting facility.
EPA FRS registry ID 110015910246 (U.S. EPA ECHO) Agency record
Severity 6.8

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 Cobb County

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