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Larimer County, Colorado: environmental and disease records

Cancer mortality in Larimer County is 119.9 deaths per 100,000 people per year against a U.S. rate of 143.2. The strongest disease signals are Brain & nervous system deaths at 1.3 times the U.S. rate. Federal databases place 2,166 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (660), Industrial wastewater discharge (577), Air permit holder (minor source) (363). 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: 40.6288, -105.4464.

How this county ranks in Colorado

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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 Larimer County compared with the United States
CancerMeasureCounty rateU.S. rateTimes U.S.95% intervalYears
Brain & nervous systemDeaths5.74.41.3xSignificant4.7 to 6.82020-2024
Melanoma of the skinDeaths2.521.25x1.9 to 3.32020-2024
Brain & nervous systemNew cases7.16.21.15x6 to 8.42019-2023
LeukemiaNew cases15.614.51.08x13.9 to 17.52019-2023
ThyroidNew cases13.8131.06x12.1 to 15.62019-2023
LeukemiaDeaths65.71.05x5 to 7.22020-2024
PancreasNew cases13.113.90.94x11.6 to 14.82019-2023
Non-Hodgkin lymphomaDeaths4.54.80.94x3.6 to 5.52020-2024
All cancerNew cases424.7453.40.94x415.8 to 433.82019-2023
BladderNew cases16.718.70.89x15 to 18.62019-2023
Non-Hodgkin lymphomaNew cases16.518.50.89x14.8 to 18.42019-2023
PancreasDeaths1011.30.88x8.7 to 11.42020-2024
Kidney & renal pelvisDeaths33.40.88x2.3 to 3.92020-2024
Childhood cancer (under 15)New cases14.216.40.87x10.1 to 19.42019-2023
Kidney & renal pelvisNew cases15.417.90.86x13.7 to 17.22019-2023
All cancerDeaths119.9143.20.84x115.3 to 124.72020-2024
Melanoma of the skinNew cases19.323.80.81x17.4 to 21.32019-2023
BladderDeaths3.14.10.76x2.4 to 42020-2024
EsophagusNew cases3.44.60.74x2.7 to 4.32019-2023
EsophagusDeaths2.73.70.73x2.1 to 3.52020-2024
Lung & bronchusNew cases34.251.80.66x31.8 to 36.82019-2023
Liver & bile ductDeaths4.36.60.65x3.5 to 5.32020-2024
StomachNew cases4.36.60.65x3.4 to 5.32019-2023
StomachDeaths1.72.70.63x1.2 to 2.42020-2024
Lung & bronchusDeaths18.930.20.63x17.1 to 20.82020-2024
Liver & bile ductNew cases5.28.70.6x4.2 to 6.22019-2023

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 Larimer County
MeasureCountyU.S. medianDifferenceUnit
Premature death5,743.19,842.6-42%years of life lost before age 75 per 100,000
Life expectancy80.575.3+7%years
Child mortality3659.8-40%deaths under age 18 per 100,000
Infant mortality3.76.2-40%deaths under age 1 per 1,000 live births
Injury deaths71.596.9-26%deaths per 100,000
Drug overdose deaths18.528.6-35%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.

  • Formaldehyde20.3 per million
  • Naphthalene4.11 per million
  • Carbon Tetrachloride2.52 per million
  • Acetaldehyde2.46 per million

EPA Air Quality Index 2025

Monitored on 365 days: 185 good, 11 unhealthy for sensitive groups or worse. Median AQI 50, peak 119.

Regulated facilities, sites and hazards by type

2,166 active records inside the county from EPA ECHO, TRI, Superfund, Brownfields, NPDES, EIA, FAA, FRA and corrections data.

  • NPDES wastewater discharge permit660
  • Industrial wastewater discharge577
  • Air permit holder (minor source)363
  • Rail grade crossing138
  • Gas station (mapped facility)110
  • Auto repair or body shop (mapped facility)104
  • Brownfield property57
  • Small hazardous waste generator42
  • Toxic chemical release facility (TRI)18
  • TRI reporting facility14
  • Public airport10
  • EPA air quality monitor9
  • Dry cleaner (mapped facility)9
  • Major air pollution source8
  • Heliport8
  • Large hazardous waste generator7
  • Hydroelectric plant6
  • Scrapyard (mapped facility)6
  • Solar power plant5
  • Large greenhouse gas emitter4
  • Landfill (mapped facility)3
  • Hazardous waste transporter2
  • Wastewater plant (mapped facility)2
  • Airfield1
  • Commercial airport1
  • Crematorium (mapped facility)1
  • Gas 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.

  1. Rawhide Energy Station, Wellington

    Toxic chemical release facility (TRI). Chemicals: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)), Barium And Barium Compounds, Chlorine, Vanadium compounds and 4 more. Reports carcinogens. 2,120,400 lbs released over 5 years.

    TRI facility ID 80549RWHDN2700E (U.S. EPA Toxics Release Inventory)

    Severity 9.4

  2. Rawhide Energy Station, Wellington

    TRI reporting facility. Penalties $21,000.

    EPA FRS registry ID 110000607148 (U.S. EPA ECHO) Agency record

    Severity 7.4

  3. Ranch Way Feed Mills, Fort Collins

    TRI reporting facility.

    EPA FRS registry ID 110000467423 (U.S. EPA ECHO) Agency record

    Severity 7

  4. Woodward Hrt, Fort Collins

    TRI reporting facility.

    EPA FRS registry ID 110000887933 (U.S. EPA ECHO) Agency record

    Severity 7

  5. Anheuser-Busch, Llc, Fort Collins

    TRI reporting facility. Penalties $223,963.

    EPA FRS registry ID 110057414070 (U.S. EPA ECHO) Agency record

    Severity 6.8

  6. Fort Collins Brewery, Fort Collins

    Toxic chemical release facility (TRI). Chemicals: Ammonia, Certain glycol ethers. 65,124 lbs released over 5 years.

    TRI facility ID 80524NHSRB2351B (U.S. EPA Toxics Release Inventory)

    Severity 6.7

  7. Larimer County Landfill, Fort Collins

    Major air pollution source.

    EPA FRS registry ID 110012150858 (U.S. EPA ECHO) Agency record

    Severity 6.5

  8. Avago Technologies Inc Fort Collins Colorado, Fort Collins

    Toxic chemical release facility (TRI). Chemicals: N-Methyl-2-pyrrolidone, Hydrogen fluoride, Ethylene glycol, Nitric acid. 34,370 lbs released over 5 years.

    TRI facility ID 80525GLNTT4380S (U.S. EPA Toxics Release Inventory)

    Severity 6.5

  9. Woodward Hrt, Fort Collins

    Large hazardous waste generator.

    EPA FRS registry ID 110000887933 (U.S. EPA ECHO) Agency record

    Severity 6

  10. Larimer County Landfill, Fort Collins

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110012150858 (U.S. EPA ECHO) Agency record

    Severity 6

  11. Avago Technologies, Fort Collins

    TRI reporting facility.

    EPA FRS registry ID 110008062577 (U.S. EPA ECHO) Agency record

    Severity 5.7

  12. Larimer County Landfill, Fort Collins

    Large greenhouse gas emitter.

    EPA FRS registry ID 110012150858 (U.S. EPA ECHO) Agency record

    Severity 5.5

  13. Holcim Wcr Inc Drake Ready Mix Plant, Fort Collins

    Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead compounds. 998 lbs released over 5 years.

    TRI facility ID 8052WDRKRD3EAST (U.S. EPA Toxics Release Inventory)

    Severity 5.3

  14. Hach Co Loveland, Loveland

    Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens. 8 lbs released over 5 years.

    TRI facility ID 80539HCHCX5600L (U.S. EPA Toxics Release Inventory)

    Severity 5.2

  15. Co State U - Foothills Campus, Fort Collins

    Major air pollution source. Penalties $59,850.

    EPA FRS registry ID 110055619120 (U.S. EPA ECHO) Agency record

    Severity 5

  16. Northern Colorado Rgnl, Fort Collins/Loveland

    Commercial airport. O.

    Record ID FNL (FAA / U.S. DOT)

    Severity 5

  17. Tanco Engineering Inc, Loveland

    TRI reporting facility.

    EPA FRS registry ID 110071956626 (U.S. EPA ECHO) Agency record

    Severity 5

  18. Martin Marietta - Taft Asphalt, Fort Collins

    Toxic chemical release facility (TRI). Chemicals: Polycyclic aromatic compounds, Benzo[g,h,i]perylene. Reports carcinogens. 2 lbs released over 5 years.

    TRI facility ID 8052WMRTNM18NTA (U.S. EPA Toxics Release Inventory)

    Severity 4.9

  19. Quebecor World - Loveland, Loveland

    Major air pollution source. Penalties $14,000.

    EPA FRS registry ID 110001398069 (U.S. EPA ECHO) Agency record

    Severity 4.8

  20. Estes Park Sanitation District, Estes Park

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110002040862 (U.S. EPA ECHO) Agency record

    Severity 4.8

  21. Ranch Way Feed Mills, Fort Collins

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110000467423 (U.S. EPA ECHO) Agency record

    Severity 4.5

  22. Rawhide Energy Station, Wellington

    Major air pollution source. Penalties $21,000.

    EPA FRS registry ID 110000607148 (U.S. EPA ECHO) Agency record

    Severity 4.5

  23. Woodward Hrt, Fort Collins

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110000887933 (U.S. EPA ECHO) Agency record

    Severity 4.5

  24. Glen Echo Resort, Bellvue

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110013748766 (U.S. EPA ECHO) Agency record

    Severity 4.5

  25. City Of Loveland Wastewater Treatment Plant, Loveland

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110014452029 (U.S. EPA ECHO) Agency record

    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 Larimer County

  • Colorado 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 Larimer County, and their findings.

  • Colorado vital statistics office

    Death certificate counts by cause of death and residence tract or ZIP code, and the years behind the mortality measures above.

  • Colorado health department, environmental epidemiology

    Health consultations or assessments by ATSDR or the state health department covering the county, and any exposure investigations.

  • Colorado 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.

  • Colorado 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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