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Shasta County, California: environmental and disease records

Cancer mortality in Shasta County is 164.5 deaths per 100,000 people per year against a U.S. rate of 143.2, a statistically significant excess. The strongest disease signals are Esophagus deaths at 1.4 times the U.S. rate and Lung & bronchus deaths at 1.2 times the U.S. rate. Federal databases place 1,036 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (357), Small hazardous waste generator (182), Gas station (mapped facility) (90). 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: 40.7348, -122.0179.

How this county ranks in California

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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 Shasta County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Melanoma of the skin	Deaths	2.9	2	1.45x	2 to 4.1	2020-2024
Esophagus	Deaths	5.1	3.7	1.38xSignificant	3.9 to 6.5	2020-2024
Leukemia	New cases	19.6	14.5	1.35xSignificant	17.1 to 22.4	2019-2023
Brain & nervous system	Deaths	5.7	4.4	1.3x	4.4 to 7.3	2020-2024
Esophagus	New cases	5.9	4.6	1.28x	4.6 to 7.4	2019-2023
Stomach	New cases	8.4	6.6	1.27xSignificant	6.8 to 10.4	2019-2023
Melanoma of the skin	New cases	29.9	23.8	1.26xSignificant	26.8 to 33.3	2019-2023
Kidney & renal pelvis	Deaths	4	3.4	1.18x	3 to 5.3	2020-2024
Bladder	Deaths	4.8	4.1	1.17x	3.7 to 6.2	2020-2024
Lung & bronchus	Deaths	34.9	30.2	1.16xSignificant	31.8 to 38.2	2020-2024
All cancer	Deaths	164.5	143.2	1.15xSignificant	157.6 to 171.7	2020-2024
Childhood cancer (under 15)	New cases	18.4	16.4	1.12x	12.4 to 26.3	2019-2023
Pancreas	Deaths	12.5	11.3	1.11x	10.7 to 14.6	2020-2024
Brain & nervous system	New cases	6.8	6.2	1.1x	5.3 to 8.6	2019-2023
Liver & bile duct	New cases	9.5	8.7	1.09x	7.9 to 11.3	2019-2023
Pancreas	New cases	14.8	13.9	1.06x	12.8 to 17	2019-2023
Non-Hodgkin lymphoma	Deaths	5.1	4.8	1.06x	4 to 6.5	2020-2024
Lung & bronchus	New cases	54.3	51.8	1.05x	50.5 to 58.4	2019-2023
All cancer	New cases	464.5	453.4	1.02x	452.2 to 477	2019-2023
Bladder	New cases	19.1	18.7	1.02x	16.8 to 21.7	2019-2023
Non-Hodgkin lymphoma	New cases	17.9	18.5	0.97x	15.5 to 20.5	2019-2023
Leukemia	Deaths	5.3	5.7	0.93x	4.1 to 6.8	2020-2024
Liver & bile duct	Deaths	6	6.6	0.91x	4.8 to 7.4	2020-2024
Kidney & renal pelvis	New cases	14.6	17.9	0.82x	12.5 to 17.1	2019-2023
Thyroid	New cases	10.2	13	0.78x	8.2 to 12.6	2019-2023
Stomach	Deaths	2.1	2.7	0.78x	1.3 to 3.2	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 Shasta County
Measure	County	U.S. median	Difference	Unit
Premature death	10,558.4	9,842.6	+7%	years of life lost before age 75 per 100,000
Life expectancy	74.3	75.3	-1%	years
Child mortality	49.8	59.8	-17%	deaths under age 18 per 100,000
Infant mortality	6.4	6.2	+2%	deaths under age 1 per 1,000 live births
Injury deaths	116.3	96.9	+20%	deaths per 100,000
Drug overdose deaths	35.2	28.6	+23%	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.

Formaldehyde30 per million
Acetaldehyde3.42 per million
Carbon Tetrachloride2.87 per million
Naphthalene1.9 per million

EPA Air Quality Index 2025

Monitored on 365 days: 276 good, 1 unhealthy for sensitive groups or worse. Median AQI 44, peak 154.

Regulated facilities, sites and hazards by type

1,036 active records inside the county from EPA ECHO, TRI, Superfund, Brownfields, NPDES, EIA, FAA, FRA and corrections data.

NPDES wastewater discharge permit357
Small hazardous waste generator182
Gas station (mapped facility)90
Auto repair or body shop (mapped facility)68
Industrial wastewater discharge54
Wastewater plant (mapped facility)52
Rail grade crossing47
Large hazardous waste generator45
Hydroelectric plant31
Hazardous waste transporter25
Major air pollution source13
Air permit holder (minor source)9
Toxic chemical release facility (TRI)9
Landfill (mapped facility)8
TRI reporting facility8
Large greenhouse gas emitter7
Heliport6
Biomass power plant4
Scrapyard (mapped facility)4
EPA air quality monitor3
Public airport3
Dry cleaner (mapped facility)3
Brownfield property2
Superfund (NPL) site2
Commercial airport1
Gas power plant1
Solar power plant1
Wind 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.

Iron Mountain Mine, Redding
Superfund (NPL) site. Hazard Ranking System score 56.2. NPL Site.
EPA site ID CAD980498612 (U.S. EPA Superfund (SEMS/NPL)) Agency record
Severity 10
Afterthought Mine, Bella Vista
Superfund (NPL) site. Hazard Ranking System score 50. NPL Site.
EPA site ID CAN000908808 (U.S. EPA Superfund (SEMS/NPL)) Agency record
Severity 10
Knauf Insulation Inc., Shasta Lake
Toxic chemical release facility (TRI). Chemicals: Ammonia, Manganese And Manganese Compounds, Manganese compounds, Chromium compounds (except for chromite ore mined in the Transvaal Region). 958,485 lbs released over 5 years.
TRI facility ID 96019KNFFB3100A (U.S. EPA Toxics Release Inventory)
Severity 7.6
J.F. Shea Construction Inc Fawndale Rock & Asphalt, Redding
Toxic chemical release facility (TRI). Chemicals: Lead compounds, Propylene, Polycyclic aromatic compounds, Benzo[g,h,i]perylene. Reports carcinogens. 661 lbs released over 5 years.
TRI facility ID 96002JFSHC1538F (U.S. EPA Toxics Release Inventory)
Severity 6.7
Knauf Insulation Gmbh, Shasta Lake
TRI reporting facility.
EPA FRS registry ID 110015679041 (U.S. EPA ECHO) Agency record
Severity 6.4
J.F. Shea Construction Inc. Aggregate Products, Redding
Toxic chemical release facility (TRI). Chemicals: Lead compounds, Barium compounds (except for barium sulfate (CAS No. 7727-43-7)), Benzo[g,h,i]perylene, Polycyclic aromatic compounds and 1 more. Reports carcinogens. 158 lbs released over 5 years.
TRI facility ID 96001JFSHC174CL (U.S. EPA Toxics Release Inventory)
Severity 6.2
Calportland Redding Cement Plant, Redding
Toxic chemical release facility (TRI). Chemicals: Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Chromium compounds (except for chromite ore mined in the Transvaal Region), Mercury And Mercury Compounds, Mercury compounds and 2 more. 9,886 lbs released over 5 years.
TRI facility ID 96003CLVRS15390 (U.S. EPA Toxics Release Inventory)
Severity 6.1
Burney Forest Power, Burney
Major air pollution source.
EPA FRS registry ID 110000715940 (U.S. EPA ECHO) Agency record
Severity 6
Mammoth,Sutro,Keystone Et Al, Redding
NPDES wastewater discharge permit.
EPA FRS registry ID 110064635514 (U.S. EPA ECHO) Agency record
Severity 6
Clear Creek Wwtp, Anderson
NPDES wastewater discharge permit. Penalties $9,000.
EPA FRS registry ID 110000519715 (U.S. EPA ECHO) Agency record
Severity 5.5
Burney Forest Power, Burney
NPDES wastewater discharge permit.
EPA FRS registry ID 110000715940 (U.S. EPA ECHO) Agency record
Severity 5.5
Shasta Lake Wwtf, Shasta Lake
NPDES wastewater discharge permit.
EPA FRS registry ID 110001104199 (U.S. EPA ECHO) Agency record
Severity 5.5
Redding Stillwater Wastewater Treatment Plant, Anderson
NPDES wastewater discharge permit. Penalties $9,000.
EPA FRS registry ID 110000520749 (U.S. EPA ECHO) Agency record
Severity 5.3
Jf Shea Constr Fawndale Rock & Asphalt, Redding
TRI reporting facility.
EPA FRS registry ID 110039018880 (U.S. EPA ECHO) Agency record
Severity 5.1
Redding Rgnl, Redding
Commercial airport. O.
Record ID RDD (FAA / U.S. DOT)
Severity 5
J F Shea Co Inc, Redding
TRI reporting facility.
EPA FRS registry ID 110009532924 (U.S. EPA ECHO) Agency record
Severity 4.8
Sierra Pacific Industries Burney Div, Burney
Toxic chemical release facility (TRI). Chemicals: Lead compounds, Dioxin and dioxin-like compounds. Reports carcinogens. 1 lbs released over 5 years.
TRI facility ID 96013SRRPCHWY29 (U.S. EPA Toxics Release Inventory)
Severity 4.8
Shasta-Sustainable Resource Management Inc., Anderson
Major air pollution source. Penalties $1,600.
EPA FRS registry ID 110000527779 (U.S. EPA ECHO) Agency record
Severity 4.8
Sierra Pacific Burney Facility, Burney
TRI reporting facility.
EPA FRS registry ID 110002339791 (U.S. EPA ECHO) Agency record
Severity 4.8
Sierra Pacific Industries Anderson Div, Anderson
Toxic chemical release facility (TRI). Chemicals: Dioxin and dioxin-like compounds. Reports carcinogens.
TRI facility ID 96007SRRPC19758 (U.S. EPA Toxics Release Inventory)
Severity 4.5
Captiveaire Systems Inc, Redding
Toxic chemical release facility (TRI). Chemicals: Chromium, Zinc compounds, Nickel, Copper. Reports carcinogens.
TRI facility ID 9600WCPTVR6856L (U.S. EPA Toxics Release Inventory)
Severity 4.5
Calportland Cement Plant, Redding
TRI reporting facility.
EPA FRS registry ID 110070385909 (U.S. EPA ECHO) Agency record
Severity 4.5
Redding - Health Department, Redding
EPA air quality monitor.
Record ID 060890004 (U.S. EPA AirData)
Severity 4.3
Shasta-Sustainable Resource Management Inc., Anderson
NPDES wastewater discharge permit. Penalties $1,600.
EPA FRS registry ID 110000527779 (U.S. EPA ECHO) Agency record
Severity 4.3
Sierra Pacific Burney Facility, Burney
Major air pollution source.
EPA FRS registry ID 110002339791 (U.S. EPA ECHO) Agency record
Severity 4.3

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 Shasta County

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