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Del Norte County, California: environmental and disease records

Cancer mortality in Del Norte County is 186.1 deaths per 100,000 people per year against a U.S. rate of 143.2, a statistically significant excess. The strongest disease signals are Leukemia deaths at 1.9 times the U.S. rate and Liver & bile duct deaths at 1.8 times the U.S. rate. Federal databases place 123 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (41), Brownfield property (21), Small hazardous waste generator (20). One correctional facility operates in the county. EPA AirToxScreen estimates a lifetime cancer risk from outdoor air toxics of 20 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: 41.6906, -123.9059.

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 Del Norte County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Leukemia	Deaths	10.8	5.7	1.89xSignificant	6.3 to 17.5	2020-2024
Liver & bile duct	Deaths	11.9	6.6	1.8xSignificant	7.5 to 18.2	2020-2024
All cancer	Deaths	186.1	143.2	1.3xSignificant	166.8 to 207.3	2020-2024
Liver & bile duct	New cases	10.8	8.7	1.24x	6.7 to 16.8	2019-2023
Lung & bronchus	Deaths	33.7	30.2	1.12x	26.2 to 42.9	2020-2024
Pancreas	New cases	15	13.9	1.08x	9.5 to 22.7	2019-2023
Lung & bronchus	New cases	49.4	51.8	0.95x	40.1 to 60.6	2019-2023
Non-Hodgkin lymphoma	New cases	15.7	18.5	0.85x	10.5 to 22.9	2019-2023
Pancreas	Deaths	8.9	11.3	0.79x	5.1 to 14.9	2020-2024
Kidney & renal pelvis	New cases	13.8	17.9	0.77x	8.7 to 20.9	2019-2023
All cancer	New cases	345.7	453.4	0.76x	318.4 to 374.9	2019-2023
Leukemia	New cases	10.2	14.5	0.7x	5.8 to 16.6	2019-2023
Melanoma of the skin	New cases	16.5	23.8	0.69x	11.1 to 23.9	2019-2023
Bladder	New cases	10.6	18.7	0.57x	6.4 to 16.9	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 Del Norte County
Measure	County	U.S. median	Difference	Unit
Premature death	11,532.8	9,842.6	+17%	years of life lost before age 75 per 100,000
Life expectancy	73.8	75.3	-2%	years
Child mortality	47.6	59.8	-20%	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	127.5	96.9	+32%	deaths per 100,000
Drug overdose deaths	56.5	28.6	+98%	deaths per 100,000

Air toxics and air quality

EPA AirToxScreen 2020

Lifetime cancer risk from outdoor air toxics: 20 in a million. EPA treats 100 in a million as the upper end of acceptable risk and 1 in a million as the goal.

Formaldehyde12.29 per million
Carbon Tetrachloride2.98 per million
Acetaldehyde1.9 per million
Naphthalene0.91 per million

EPA Air Quality Index 2025

Monitored on 352 days: 288 good, 0 unhealthy for sensitive groups or worse. Median AQI 32, peak 70.

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit41
Brownfield property21
Small hazardous waste generator20
Industrial wastewater discharge15
Gas station (mapped facility)7
EPA air quality monitor3
Wastewater plant (mapped facility)3
Public airport2
Large hazardous waste generator2
Hazardous waste transporter2
Major air pollution source1
Air permit holder (minor source)1
Commercial airport1
Auto repair or body shop (mapped facility)1
Correctional facility (prison or jail)1
TRI reporting facility1
Toxic chemical release facility (TRI)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.

Crescent City Wwtf, Crescent City
NPDES wastewater discharge permit.
EPA FRS registry ID 110055983039 (U.S. EPA ECHO) Agency record
Severity 5.5
Rumiano Cheese Co, Crescent City
Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid. 1,000 lbs released over 5 years.
TRI facility ID 95531RMNCH5119T (U.S. EPA Toxics Release Inventory)
Severity 5.3
Jack Mc Namara Fld, Crescent City
Commercial airport. O.
Record ID CEC (FAA / U.S. DOT)
Severity 5
Rumiano Cheese Co, Crescent City
TRI reporting facility.
EPA FRS registry ID 110000485680 (U.S. EPA ECHO) Agency record
Severity 4
Eco Nutrients Llc, Crescent City
NPDES wastewater discharge permit.
EPA FRS registry ID 110070094468 (U.S. EPA ECHO) Agency record
Severity 4
Hambro Forest Products, Crescent City
Major air pollution source.
EPA FRS registry ID 110000485671 (U.S. EPA ECHO) Agency record
Severity 3.5
Dutton/Hooshnam Mill Site, Crescent City
Brownfield property.
EPA FRS registry ID 110039531030 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Blakes Allotment, Klamath
Brownfield property.
EPA FRS registry ID 110071964601 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Old Hughes Mill Site, Klamath
Brownfield property.
EPA FRS registry ID 110071964603 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Gas For Less, Klamath
Brownfield property.
EPA FRS registry ID 110071966640 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Arrow Mills Lumber Mill, Klamath
Brownfield property.
EPA FRS registry ID 110071966641 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Jet Boat Tours, Klamath
Brownfield property.
EPA FRS registry ID 110071966643 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Caltrans Lock Lot (Boat Yard), Klamath
Brownfield property.
EPA FRS registry ID 110071966644 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Former Klamath Mill, Klamath
Brownfield property.
EPA FRS registry ID 110071968978 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Cats Rv, Klamath
Brownfield property.
EPA FRS registry ID 110071968979 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Riverside Rv Park, Klamath
Brownfield property.
EPA FRS registry ID 110071968980 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Old Townsite 1, Klamath
Brownfield property.
EPA FRS registry ID 110071969770 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Mcbeth Site 1, Klamath
Brownfield property.
EPA FRS registry ID 110071969783 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Standard Veneer, Crescent City
Brownfield property.
EPA FRS registry ID 110071969988 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Wagon Wheel Motel, Gasquet
Brownfield property.
EPA FRS registry ID 110071976899 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Ocean Way Motel, Crescent City
Brownfield property.
EPA FRS registry ID 110071978854 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Tolowa Dee-Ni' Nation Property, Smith River
Brownfield property.
EPA FRS registry ID 110071979168 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Howland Hill Site, Crescent City
Brownfield property.
EPA FRS registry ID 110071981004 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Enderts Beach, Crescent City
Brownfield property.
EPA FRS registry ID 110071984011 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Crescent City - 2125 Enderts Beach Rd, Crescent City
Brownfield property.
EPA FRS registry ID 110071984935 (U.S. EPA Brownfields (ACRES)) 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.

Calif. Dept Of Corrections - Pelican Bay Prison, Crescent City
EPA FRS registry ID
110002811994
Wastewater permit
None on record
EPA detailed facility report

Discovery / public records

Records to request for Del Norte 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 Del Norte 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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