CA / county FIPS 06011 / county research

Colusa County, California: environmental and disease records

Cancer mortality in Colusa County is 133.6 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 248 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (61), Rail grade crossing (51), Small hazardous waste generator (36). 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: 39.1686, -122.2067.

How this county ranks in California

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 Colusa County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Liver & bile duct	New cases	12.4	8.7	1.43x	7 to 20.5	2019-2023
Bladder	New cases	20.2	18.7	1.08x	12.9 to 30.2	2019-2023
Kidney & renal pelvis	New cases	18.2	17.9	1.02x	11.3 to 27.8	2019-2023
Non-Hodgkin lymphoma	New cases	17.3	18.5	0.94x	10.6 to 26.7	2019-2023
All cancer	Deaths	133.6	143.2	0.93x	113.9 to 155.8	2020-2024
All cancer	New cases	416.7	453.4	0.92x	380.5 to 455.5	2019-2023
Lung & bronchus	Deaths	24.3	30.2	0.8x	16.4 to 34.8	2020-2024
Lung & bronchus	New cases	39.2	51.8	0.76x	28.9 to 52.1	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 Colusa County
Measure	County	U.S. median	Difference	Unit
Premature death	6,184.1	9,842.6	-37%	years of life lost before age 75 per 100,000
Life expectancy	79.2	75.3	+5%	years
Child mortality	43	59.8	-28%	deaths under age 18 per 100,000
Infant mortality	n/a	6.2	n/a	deaths under age 1 per 1,000 live births
Injury deaths	73.7	96.9	-24%	deaths per 100,000
Drug overdose deaths	16.8	28.6	-41%	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.

Formaldehyde25.28 per million
Acetaldehyde3.14 per million
Carbon Tetrachloride2.95 per million
Naphthalene1.72 per million

EPA Air Quality Index 2025

Monitored on 365 days: 289 good, 0 unhealthy for sensitive groups or worse. Median AQI 40, peak 96.

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit61
Rail grade crossing51
Small hazardous waste generator36
Gas station (mapped facility)25
Industrial wastewater discharge21
Public airport10
Large hazardous waste generator7
Major air pollution source6
Hazardous waste transporter6
Auto repair or body shop (mapped facility)5
Large greenhouse gas emitter4
EPA air quality monitor2
Brownfield property2
TRI reporting facility2
Toxic chemical release facility (TRI)2
Wastewater plant (mapped facility)2
Air permit holder (minor source)1
Airfield1
Heliport1
Biomass power plant1
Gas power plant1
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.

Latham Pool Products Inc-Ca, Williams
Toxic chemical release facility (TRI). Chemicals: Styrene, Methyl methacrylate. Reports carcinogens. 692,003 lbs released over 5 years.
TRI facility ID 95987VKNGP101CR (U.S. EPA Toxics Release Inventory)
Severity 9
Viking Pools Inc., Williams
TRI reporting facility.
EPA FRS registry ID 110001133407 (U.S. EPA ECHO) Agency record
Severity 6.3
Colusa Wwtp, Colusa
NPDES wastewater discharge permit. Penalties $15,865.
EPA FRS registry ID 110055984957 (U.S. EPA ECHO) Agency record
Severity 5
Williams Wwtp, Williams
NPDES wastewater discharge permit. Penalties $6,000.
EPA FRS registry ID 110070670245 (U.S. EPA ECHO) Agency record
Severity 4.3
Colusa-Sunrise Blvd, Colusa
EPA air quality monitor.
Record ID 060111002 (U.S. EPA AirData)
Severity 4.1
Conrad Forest Products, Arbuckle
TRI reporting facility.
EPA FRS registry ID 110058320231 (U.S. EPA ECHO) Agency record
Severity 4
Colusa County Airport, Colusa
NPDES wastewater discharge permit.
EPA FRS registry ID 110066332338 (U.S. EPA ECHO) Agency record
Severity 4
Colusa Generating Station, Maxwell
Gas power plant.
Record ID 56532 (U.S. Energy Information Administration)
Severity 3.6
Viking Pools Inc., Williams
Major air pollution source.
EPA FRS registry ID 110001133407 (U.S. EPA ECHO) Agency record
Severity 3.5
Wadham Energy Ltd Partnership, Williams
Major air pollution source.
EPA FRS registry ID 110001201048 (U.S. EPA ECHO) Agency record
Severity 3.5
Pg&E- Delevan Compressor Stn 16, Maxwell
Major air pollution source.
EPA FRS registry ID 110002065078 (U.S. EPA ECHO) Agency record
Severity 3.5
Colusa Generating Station, Maxwell
Major air pollution source.
EPA FRS registry ID 110038892115 (U.S. EPA ECHO) Agency record
Severity 3.5
Adams Vegetable Oils, Arbuckle
Major air pollution source.
EPA FRS registry ID 110040367260 (U.S. EPA ECHO) Agency record
Severity 3.5
Central Valley Gas Storage Cvgs, Princeton
Major air pollution source.
EPA FRS registry ID 110046592861 (U.S. EPA ECHO) Agency record
Severity 3.5
Cortina - Lot 50 Spring Valley Rd, Williams
Brownfield property.
EPA FRS registry ID 110071971854 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Elgin Mine, Williams
Brownfield property.
EPA FRS registry ID 110071980226 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Wadham Energy Ltd Partnership, Williams
NPDES wastewater discharge permit.
EPA FRS registry ID 110001201048 (U.S. EPA ECHO) Agency record
Severity 3
Pacific Bell, Stonyford
Large hazardous waste generator.
EPA FRS registry ID 110008293202 (U.S. EPA ECHO) Agency record
Severity 3
Colusa Generating Station, Maxwell
Large hazardous waste generator.
EPA FRS registry ID 110038892115 (U.S. EPA ECHO) Agency record
Severity 3
Colusa Generating Station, Maxwell
NPDES wastewater discharge permit.
EPA FRS registry ID 110038892115 (U.S. EPA ECHO) Agency record
Severity 3
Adams Vegetable Oils, Arbuckle
Large hazardous waste generator.
EPA FRS registry ID 110040367260 (U.S. EPA ECHO) Agency record
Severity 3
Colusa Cnty Stonyford Landfill, Stonyford
NPDES wastewater discharge permit.
EPA FRS registry ID 110070088794 (U.S. EPA ECHO) Agency record
Severity 3
Bounde Creek Gas Unit, Princeton
Large hazardous waste generator.
EPA FRS registry ID 110070630715 (U.S. EPA ECHO) Agency record
Severity 3
Pg&E - R-1228 Grimes Location H, Grimes
Large hazardous waste generator.
EPA FRS registry ID 110072038439 (U.S. EPA ECHO) Agency record
Severity 3
Pg&E - R-1228 Location D, Grimes
Large hazardous waste generator.
EPA FRS registry ID 110072039819 (U.S. EPA ECHO) Agency record
Severity 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 Colusa 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 Colusa 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.

Scan an address in Colusa County View on the heat map All California counties