MD / county FIPS 24013 / county research

Carroll County, Maryland: environmental and disease records

Cancer mortality in Carroll County is 150.5 deaths per 100,000 people per year against a U.S. rate of 143.2, a statistically significant excess. The strongest disease signals are Brain & nervous system deaths at 1.4 times the U.S. rate. Federal databases place 829 regulated facilities, sites and hazards inside the county, led by Air permit holder (minor source) (240), NPDES wastewater discharge permit (165), Rail grade crossing (115). 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: 39.5344, -77.0128.

How this county ranks in Maryland

View on the heat map Scan an address in this county

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 Carroll County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Melanoma of the skin	New cases	43.2	23.8	1.82xSignificant	39.2 to 47.4	2019-2023
Brain & nervous system	Deaths	6.3	4.4	1.43xSignificant	4.9 to 8.1	2020-2024
Bladder	Deaths	5.4	4.1	1.32x	4.1 to 6.9	2020-2024
Thyroid	New cases	17	13	1.31xSignificant	14.4 to 20	2019-2023
Kidney & renal pelvis	Deaths	4.4	3.4	1.29x	3.3 to 5.9	2020-2024
Brain & nervous system	New cases	7.9	6.2	1.27xSignificant	6.3 to 10	2019-2023
Melanoma of the skin	Deaths	2.5	2	1.25x	1.7 to 3.7	2020-2024
All cancer	New cases	516.4	453.4	1.14xSignificant	503 to 530.1	2019-2023
Esophagus	Deaths	4.2	3.7	1.14x	3.1 to 5.6	2020-2024
Childhood cancer (under 15)	New cases	18.6	16.4	1.13x	12.5 to 26.8	2019-2023
Kidney & renal pelvis	New cases	20.2	17.9	1.13x	17.6 to 23.2	2019-2023
Lung & bronchus	Deaths	33.3	30.2	1.1x	30.2 to 36.8	2020-2024
Pancreas	Deaths	12.2	11.3	1.08x	10.2 to 14.4	2020-2024
Lung & bronchus	New cases	55.4	51.8	1.07x	51.2 to 59.8	2019-2023
Esophagus	New cases	4.9	4.6	1.07x	3.8 to 6.4	2019-2023
All cancer	Deaths	150.5	143.2	1.05xSignificant	143.5 to 157.8	2020-2024
Non-Hodgkin lymphoma	New cases	18.6	18.5	1.01x	16.1 to 21.4	2019-2023
Bladder	New cases	18.6	18.7	0.99x	16.2 to 21.3	2019-2023
Leukemia	New cases	14.4	14.5	0.99x	12.2 to 17	2019-2023
Pancreas	New cases	13.6	13.9	0.98x	11.5 to 16	2019-2023
Leukemia	Deaths	5.1	5.7	0.89x	3.9 to 6.7	2020-2024
Stomach	New cases	5.8	6.6	0.88x	4.5 to 7.4	2019-2023
Liver & bile duct	New cases	7.2	8.7	0.83x	5.8 to 9	2019-2023
Non-Hodgkin lymphoma	Deaths	3.9	4.8	0.81x	2.9 to 5.3	2020-2024
Liver & bile duct	Deaths	5.3	6.6	0.8x	4 to 6.8	2020-2024
Stomach	Deaths	2	2.7	0.74x	1.3 to 3	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 Carroll County
Measure	County	U.S. median	Difference	Unit
Premature death	6,289.3	9,842.6	-36%	years of life lost before age 75 per 100,000
Life expectancy	78.2	75.3	+4%	years
Child mortality	32.6	59.8	-45%	deaths under age 18 per 100,000
Infant mortality	3.2	6.2	-49%	deaths under age 1 per 1,000 live births
Injury deaths	88.1	96.9	-9%	deaths per 100,000
Drug overdose deaths	35.5	28.6	+24%	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.

Formaldehyde19.19 per million
Carbon Tetrachloride2.95 per million
Acetaldehyde1.88 per million
Benzene1.47 per million

EPA Air Quality Index 2025

Monitored on 238 days: 215 good, 0 unhealthy for sensitive groups or worse. Median AQI 38, peak 90.

Regulated facilities, sites and hazards by type

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

Air permit holder (minor source)240
NPDES wastewater discharge permit165
Rail grade crossing115
Small hazardous waste generator72
Industrial wastewater discharge63
Gas station (mapped facility)56
Auto repair or body shop (mapped facility)39
Public airport10
Large hazardous waste generator10
Hazardous waste transporter10
TRI reporting facility8
Toxic chemical release facility (TRI)8
Wastewater plant (mapped facility)6
Dry cleaner (mapped facility)5
Major air pollution source4
Brownfield property4
Scrapyard (mapped facility)4
Large greenhouse gas emitter2
Heliport2
Landfill (mapped facility)2
EPA air quality monitor1
Commercial airport1
Correctional facility (prison or jail)1
Crematorium (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.

Heidelberg Materials Us Cement Llc, Union Bridge
Toxic chemical release facility (TRI). Chemicals: Hydrogen sulfide, Ammonia, Mercury And Mercury Compounds, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) and 4 more. Reports carcinogens. 86,680 lbs released over 5 years.
TRI facility ID 21791LHGHP117SO (U.S. EPA Toxics Release Inventory)
Severity 8.3
Black & Decker (Us) Inc, Hampstead
Toxic chemical release facility (TRI). Chemicals: Methanol, Nickel, Lead. Reports carcinogens. 479 lbs released over 5 years.
TRI facility ID 21074BLCKD626HA (U.S. EPA Toxics Release Inventory)
Severity 6.6
Freedom District Wwtp, Sykesville
NPDES wastewater discharge permit.
EPA FRS registry ID 110002451908 (U.S. EPA ECHO) Agency record
Severity 6
Taneytown Wastewater Treatment Plant, Taneytown
NPDES wastewater discharge permit.
EPA FRS registry ID 110019879345 (U.S. EPA ECHO) Agency record
Severity 6
Heidelberg Materials Us Cement Llc, Union Bridge
TRI reporting facility.
EPA FRS registry ID 110003507385 (U.S. EPA ECHO) Agency record
Severity 5.8
Pheasant Ridge Mhp,Llc., Mount Airy
NPDES wastewater discharge permit. Penalties $20,000.
EPA FRS registry ID 110006634801 (U.S. EPA ECHO) Agency record
Severity 5.5
Mount Airy Wwtp, Mount Airy
NPDES wastewater discharge permit.
EPA FRS registry ID 110009025054 (U.S. EPA ECHO) Agency record
Severity 5.5
Hampstead Wwtp, Hampstead
NPDES wastewater discharge permit. Penalties $26,777.
EPA FRS registry ID 110037395100 (U.S. EPA ECHO) Agency record
Severity 5.5
Evapco Inc-Taneytown, Taneytown
Toxic chemical release facility (TRI). Chemicals: Nickel, Chromium, Manganese. Reports carcinogens. 15 lbs released over 5 years.
TRI facility ID 2178WVPCNC5151A (U.S. EPA Toxics Release Inventory)
Severity 5.4
Congoleum Industries, Finksburg
Major air pollution source.
EPA FRS registry ID 110002085109 (U.S. EPA ECHO) Agency record
Severity 5.3
Black & Decker, Hampstead
TRI reporting facility.
EPA FRS registry ID 110000339483 (U.S. EPA ECHO) Agency record
Severity 4.8
Congoleum Industries, Finksburg
NPDES wastewater discharge permit.
EPA FRS registry ID 110002085109 (U.S. EPA ECHO) Agency record
Severity 4.8
Freedom District Water Treatment Plant, Sykesville
NPDES wastewater discharge permit. Penalties $34,875.
EPA FRS registry ID 110056029907 (U.S. EPA ECHO) Agency record
Severity 4.8
Evapco Inc-Taneytown, Taneytown
TRI reporting facility.
EPA FRS registry ID 110001276333 (U.S. EPA ECHO) Agency record
Severity 4.6
Maryland Paving Inc, Finksburg
Toxic chemical release facility (TRI). Chemicals: Polycyclic aromatic compounds, Benzo[g,h,i]perylene. Reports carcinogens.
TRI facility ID 21048MRYLN2914I (U.S. EPA Toxics Release Inventory)
Severity 4.5
Colonial Pipeline Company, Woodbine
Major air pollution source.
EPA FRS registry ID 110000796292 (U.S. EPA ECHO) Agency record
Severity 4.5
B G E Northern Landfill, Westminster
Large greenhouse gas emitter.
EPA FRS registry ID 110001298104 (U.S. EPA ECHO) Agency record
Severity 4.5
Griffith Energy Services S.L Bare, Westminster
TRI reporting facility.
EPA FRS registry ID 110002341476 (U.S. EPA ECHO) Agency record
Severity 4.5
Todd Village Mobile Home Park-Wtp 1 - Wells 1 & 2, Finksburg
NPDES wastewater discharge permit.
EPA FRS registry ID 110006632340 (U.S. EPA ECHO) Agency record
Severity 4.5
Manchester Wwtp, Manchester
NPDES wastewater discharge permit.
EPA FRS registry ID 110006634829 (U.S. EPA ECHO) Agency record
Severity 4.5
Cranberry Water Treatment Plt., Westminster
NPDES wastewater discharge permit.
EPA FRS registry ID 110011128387 (U.S. EPA ECHO) Agency record
Severity 4.5
Wecare Denali, Llc, Woodbine
NPDES wastewater discharge permit.
EPA FRS registry ID 110046597786 (U.S. EPA ECHO) Agency record
Severity 4.5
Fuchs N.A., Hampstead
Toxic chemical release facility (TRI). Chemicals: Ethylene oxide. Reports carcinogens.
TRI facility ID 2107WFCHSN38HAM (U.S. EPA Toxics Release Inventory)
Severity 4.5
Griffith Energy Services Inc Spring Mill, Westminster
Toxic chemical release facility (TRI). Chemicals: 1,2,4-Trimethylbenzene, Naphthalene, Xylene (mixed isomers). Reports carcinogens.
TRI facility ID 21157GRFFT732SP (U.S. EPA Toxics Release Inventory)
Severity 4.5
Griffith Energy Services Inc Bare, Westminster
Toxic chemical release facility (TRI). Chemicals: n-Hexane, Cyclohexane, Ethylbenzene, Benzene and 4 more. Reports carcinogens.
TRI facility ID 21157GRFFT8SULL (U.S. EPA Toxics Release Inventory)
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.

Md Dept Of Public Safety & Correctional Srvcs / Md Police & Correctional Trainin, Sykesville
EPA FRS registry ID
110071318255
Wastewater permit
None on record
EPA detailed facility report

Discovery / public records

Records to request for Carroll County

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

Scan an address in Carroll County View on the heat map All Maryland counties