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Loudoun County, Virginia: environmental and disease records

Cancer mortality in Loudoun County is 108.1 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 1,124 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (601), Air permit holder (minor source) (238), Gas station (mapped facility) (96). 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: 39.0858, -77.6645.

How this county ranks in Virginia

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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 Loudoun County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Thyroid	New cases	15.8	13	1.22xSignificant	14.2 to 17.6	2019-2023
Brain & nervous system	Deaths	4.6	4.4	1.05x	3.7 to 5.6	2020-2024
Non-Hodgkin lymphoma	Deaths	4.8	4.8	1x	3.9 to 5.9	2020-2024
Pancreas	Deaths	11	11.3	0.97x	9.5 to 12.6	2020-2024
Brain & nervous system	New cases	5.9	6.2	0.95x	4.9 to 7	2019-2023
Pancreas	New cases	13.1	13.9	0.94x	11.5 to 14.8	2019-2023
Melanoma of the skin	Deaths	1.8	2	0.9x	1.3 to 2.5	2020-2024
Leukemia	Deaths	5	5.7	0.88x	4 to 6.2	2020-2024
Non-Hodgkin lymphoma	New cases	16.1	18.5	0.87x	14.3 to 18	2019-2023
Childhood cancer (under 15)	New cases	14.2	16.4	0.87x	11 to 18.1	2019-2023
Bladder	New cases	16	18.7	0.86x	14.2 to 18	2019-2023
Stomach	New cases	5.6	6.6	0.85x	4.6 to 6.8	2019-2023
All cancer	New cases	376	453.4	0.83x	367.5 to 384.7	2019-2023
Kidney & renal pelvis	Deaths	2.8	3.4	0.82x	2 to 3.6	2020-2024
Kidney & renal pelvis	New cases	13.6	17.9	0.76x	12 to 15.3	2019-2023
All cancer	Deaths	108.1	143.2	0.75x	103.4 to 112.9	2020-2024
Liver & bile duct	Deaths	4.6	6.6	0.7x	3.6 to 5.6	2020-2024
Liver & bile duct	New cases	6	8.7	0.69x	5 to 7.3	2019-2023
Bladder	Deaths	2.8	4.1	0.68x	2.1 to 3.7	2020-2024
Stomach	Deaths	1.8	2.7	0.67x	1.2 to 2.5	2020-2024
Esophagus	Deaths	2.4	3.7	0.65x	1.7 to 3.2	2020-2024
Lung & bronchus	Deaths	17.7	30.2	0.59x	15.8 to 19.7	2020-2024
Lung & bronchus	New cases	30.2	51.8	0.58x	27.7 to 32.8	2019-2023
Leukemia	New cases	8.3	14.5	0.57x	7 to 9.7	2019-2023
Esophagus	New cases	2.6	4.6	0.57x	1.9 to 3.5	2019-2023
Melanoma of the skin	New cases	12.3	23.8	0.52x	10.8 to 14	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 Loudoun County
Measure	County	U.S. median	Difference	Unit
Premature death	3,355.4	9,842.6	-66%	years of life lost before age 75 per 100,000
Life expectancy	83.8	75.3	+11%	years
Child mortality	26.1	59.8	-56%	deaths under age 18 per 100,000
Infant mortality	3.4	6.2	-45%	deaths under age 1 per 1,000 live births
Injury deaths	28.9	96.9	-70%	deaths per 100,000
Drug overdose deaths	8.8	28.6	-69%	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.

Formaldehyde20.68 per million
Carbon Tetrachloride2.97 per million
Acetaldehyde2.16 per million
Benzene1.69 per million

EPA Air Quality Index 2025

Monitored on 365 days: 294 good, 1 unhealthy for sensitive groups or worse. Median AQI 40, peak 120.

Regulated facilities, sites and hazards by type

1,124 active records inside the county from EPA ECHO, TRI, Superfund, Brownfields, NPDES, EIA, FAA, FRA and corrections data.

NPDES wastewater discharge permit601
Air permit holder (minor source)238
Gas station (mapped facility)96
Small hazardous waste generator55
Auto repair or body shop (mapped facility)51
Dry cleaner (mapped facility)23
Toxic chemical release facility (TRI)15
TRI reporting facility12
Hazardous waste transporter7
Major air pollution source4
Heliport4
Public airport3
Large greenhouse gas emitter3
Large hazardous waste generator3
Commercial airport2
Landfill (mapped facility)2
EPA air quality monitor1
Airfield1
Brownfield property1
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.

Hidden Lane Landfill, Sterling
Superfund (NPL) site. Hazard Ranking System score 50. NPL Site.
EPA site ID VAD980829030 (U.S. EPA Superfund (SEMS/NPL)) Agency record
Severity 10
Ttm Technologies N.A. Llc., Dulles
Toxic chemical release facility (TRI). Chemicals: Ammonia, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Nitric acid, Formaldehyde and 3 more. Reports carcinogens. 14,537 lbs released over 5 years.
TRI facility ID 22170TMTNC1200S (U.S. EPA Toxics Release Inventory)
Severity 7.7
Menzies Aviation Fueling Operations Wash Dulles Internationa, Sterling
Toxic chemical release facility (TRI). Chemicals: Methyl tert-butyl ether, Toluene, Xylene (mixed isomers), Naphthalene and 4 more. Reports carcinogens. 8,811 lbs released over 5 years.
TRI facility ID 20166RBPXXBUILD (U.S. EPA Toxics Release Inventory)
Severity 7.5
Virginia Concrete Dulles Plant, Sterling
Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead. Reports carcinogens. 2,971 lbs released over 5 years.
TRI facility ID 22170VRGNC44866 (U.S. EPA Toxics Release Inventory)
Severity 7.2
Superior Concrete Materials Inc. - Dulles, Chantilly
Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead, Mercury. Reports carcinogens. 1,605 lbs released over 5 years.
TRI facility ID 2015WSPRRC44146 (U.S. EPA Toxics Release Inventory)
Severity 7
Virginia Concrete Co Inc-Chantilly, Chantilly
Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead. Reports carcinogens. 1,352 lbs released over 5 years.
TRI facility ID 2015WVRGNC2586T (U.S. EPA Toxics Release Inventory)
Severity 6.9
Virginia Concrete Cochran Mill, Leesburg
Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead. Reports carcinogens. 1,077 lbs released over 5 years.
TRI facility ID 2017WVRGNC42574 (U.S. EPA Toxics Release Inventory)
Severity 6.8
Virginia Concrete Bull Run, Chantilly
Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead. Reports carcinogens. 532 lbs released over 5 years.
TRI facility ID 2015WVRGNC2762G (U.S. EPA Toxics Release Inventory)
Severity 6.6
Titan Virginia Ready-Mix Llc-Sterling Plant, Sterling
Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead. Reports carcinogens. 116 lbs released over 5 years.
TRI facility ID 2016WTTNVR22963 (U.S. EPA Toxics Release Inventory)
Severity 6.1
Virginia Concrete Dulles Plant, Sterling
TRI reporting facility.
EPA FRS registry ID 110028004237 (U.S. EPA ECHO) Agency record
Severity 5.5
Air Bp Fueling Operations International Airport Dulles, Sterling
TRI reporting facility.
EPA FRS registry ID 110021133414 (U.S. EPA ECHO) Agency record
Severity 5.5
Virginia Concrete Company Inc - Chantilly Plant, Chantilly
TRI reporting facility.
EPA FRS registry ID 110020681109 (U.S. EPA ECHO) Agency record
Severity 5.3
Vulcan Materials - Cochran Mill Plant, Leesburg
TRI reporting facility.
EPA FRS registry ID 110010407032 (U.S. EPA ECHO) Agency record
Severity 5.3
Virginia Concrete Bull Run, Chantilly
TRI reporting facility.
EPA FRS registry ID 110071956327 (U.S. EPA ECHO) Agency record
Severity 5.3
Titan Virginia Ready Mix Llc - Sterling Portable, Sterling
TRI reporting facility.
EPA FRS registry ID 110014395895 (U.S. EPA ECHO) Agency record
Severity 5.2
Dupont Fabros Tech - Ashburn Corp Ctr, Ashburn
Major air pollution source.
EPA FRS registry ID 110054206783 (U.S. EPA ECHO) Agency record
Severity 5
Washington Dulles Intl, Washington
Commercial airport. O.
Record ID IAD (FAA / U.S. DOT)
Severity 5
Ttm Technologies North America Llc, Sterling
TRI reporting facility.
EPA FRS registry ID 110000340890 (U.S. EPA ECHO) Agency record
Severity 5
Titan Virginia Ready-Mix Llc-Leesburg Plant, Leesburg
TRI reporting facility.
EPA FRS registry ID 110055129427 (U.S. EPA ECHO) Agency record
Severity 4.8
Virginia Paving Co, Sterling
Toxic chemical release facility (TRI). Chemicals: Polycyclic aromatic compounds, Benzo[g,h,i]perylene. Reports carcinogens. 1 lbs released over 5 years.
TRI facility ID 2016WVRGNP2323B (U.S. EPA Toxics Release Inventory)
Severity 4.7
Virginia Paving Co - Chantilly Plant, Chantilly
Toxic chemical release facility (TRI). Chemicals: Polycyclic aromatic compounds, Benzo[g,h,i]perylene. Reports carcinogens. 1 lbs released over 5 years.
TRI facility ID 2015WVRGNP2594T (U.S. EPA Toxics Release Inventory)
Severity 4.7
Broad Run High School, Ashburn
EPA air quality monitor.
Record ID 511071005 (U.S. EPA AirData)
Severity 4.6
Virginia Concrete Sterling Plant, Sterling
Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens.
TRI facility ID 22170CRDNL44809 (U.S. EPA Toxics Release Inventory)
Severity 4.5
Hiway Mobile Home Community Llc, Leesburg
NPDES wastewater discharge permit. Penalties $70,175.
EPA FRS registry ID 110010913850 (U.S. EPA ECHO) Agency record
Severity 4.5
Dowty A Ge Aerospace Co, Sterling
Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens.
TRI facility ID 20166SMTHS114PW (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.

No correctional facility with an EPA record is located in this county.

Discovery / public records

Records to request for Loudoun County

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