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Delta County, Colorado: environmental and disease records

Cancer mortality in Delta County is 139.6 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 422 regulated facilities, sites and hazards inside the county, led by Industrial wastewater discharge (137), Rail grade crossing (110), Air permit holder (minor source) (67). 2 correctional facilities operate in the county. EPA AirToxScreen estimates a lifetime cancer risk from outdoor air toxics of 10 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: 38.9444, -107.8031.

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 Delta County compared with the United States
CancerMeasureCounty rateU.S. rateTimes U.S.95% intervalYears
ThyroidNew cases17.2131.32x10.7 to 262019-2023
Melanoma of the skinNew cases27.223.81.14x20.8 to 35.32019-2023
BladderNew cases20.918.71.12x15.9 to 27.42019-2023
LeukemiaDeaths6.25.71.09x3.8 to 10.32020-2024
PancreasDeaths11.811.31.04x8 to 17.12020-2024
All cancerDeaths139.6143.20.97x125.9 to 154.72020-2024
Kidney & renal pelvisNew cases17.417.90.97x12.2 to 24.62019-2023
All cancerNew cases402453.40.89x376 to 429.62019-2023
PancreasNew cases1213.90.86x8.3 to 17.42019-2023
Lung & bronchusDeaths25.130.20.83x19.4 to 32.22020-2024
Liver & bile ductNew cases7.28.70.83x4.1 to 12.22019-2023
Non-Hodgkin lymphomaNew cases1518.50.81x10.4 to 21.32019-2023
LeukemiaNew cases11.414.50.79x7.5 to 17.12019-2023
Lung & bronchusNew cases35.851.80.69x28.6 to 44.52019-2023

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 Delta County
MeasureCountyU.S. medianDifferenceUnit
Premature death9,511.69,842.6-3%years of life lost before age 75 per 100,000
Life expectancy7675.3+1%years
Child mortality67.159.8+12%deaths under age 18 per 100,000
Infant mortalityn/a6.2n/adeaths under age 1 per 1,000 live births
Injury deaths136.896.9+41%deaths per 100,000
Drug overdose deaths25.428.6-11%deaths per 100,000

Air toxics and air quality

EPA AirToxScreen 2020

Lifetime cancer risk from outdoor air toxics: 10 in a million. EPA treats 100 in a million as the upper end of acceptable risk and 1 in a million as the goal.

  • Formaldehyde9.48 per million
  • Carbon Tetrachloride2.45 per million
  • Acetaldehyde0.71 per million
  • Pahpom0.45 per million

EPA Air Quality Index 2025

Monitored on 209 days: 179 good, 1 unhealthy for sensitive groups or worse. Median AQI 29, peak 103.

Regulated facilities, sites and hazards by type

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

  • Industrial wastewater discharge137
  • Rail grade crossing110
  • Air permit holder (minor source)67
  • NPDES wastewater discharge permit66
  • Public airport14
  • Gas station (mapped facility)13
  • Brownfield property4
  • Auto repair or body shop (mapped facility)3
  • Heliport3
  • Correctional facility (prison or jail)2
  • EPA air quality monitor1
  • Commercial airport1
  • Large greenhouse gas emitter1

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. Bowie No 2 Mine, Paonia

    Large greenhouse gas emitter.

    EPA FRS registry ID 110008061088 (U.S. EPA ECHO) Agency record

    Severity 5.5

  2. Bowie No 2 Mine, Paonia

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110008061088 (U.S. EPA ECHO) Agency record

    Severity 4.5

  3. Delta Wwtp, Delta

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110039800828 (U.S. EPA ECHO) Agency record

    Severity 4.5

  4. Trade Center Auto Recycling Delta, Delta

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110046320174 (U.S. EPA ECHO) Agency record

    Severity 4.5

  5. Cedaredge Wwtp, Cedaredge

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110055971569 (U.S. EPA ECHO) Agency record

    Severity 4.5

  6. Tri County Pit, Delta County

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110064106925 (U.S. EPA ECHO) Agency record

    Severity 4.5

  7. Lemoine Gravel Pit, Hotchkiss

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110070072789 (U.S. EPA ECHO) Agency record

    Severity 4.5

  8. Antelope Hill Pit, Austin

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110070072791 (U.S. EPA ECHO) Agency record

    Severity 4.5

  9. Benson Brothers Pig Mesa Pit, Orchard City

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110070072812 (U.S. EPA ECHO) Agency record

    Severity 4.5

  10. Benson Brothers Red Shale Pit, Cedaredge

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110070072823 (U.S. EPA ECHO) Agency record

    Severity 4.5

  11. Delta Pit, Delta

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110070072859 (U.S. EPA ECHO) Agency record

    Severity 4.5

  12. Cook Pit, Delta County

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110070072890 (U.S. EPA ECHO) Agency record

    Severity 4.5

  13. North Road Pit, Delta County

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110070072892 (U.S. EPA ECHO) Agency record

    Severity 4.5

  14. Reynolds Pit, Delta

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110070102776 (U.S. EPA ECHO) Agency record

    Severity 4.5

  15. DELTA HEALTH DEPT, Delta

    EPA air quality monitor.

    Record ID 080290004 (U.S. EPA AirData)

    Severity 4.3

  16. Bowie No 2 Mine, Paonia

    Air permit holder (minor source).

    EPA FRS registry ID 110008061088 (U.S. EPA ECHO) Agency record

    Severity 4

  17. Bowie No. 1 Mines, Paonia

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110007091949 (U.S. EPA ECHO) Agency record

    Severity 3.3

  18. Terror Creek Loadout, Paonia

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110011372852 (U.S. EPA ECHO) Agency record

    Severity 3.3

  19. Hotchkiss Public Works Building--222 W. Bridge St., Hotchkiss

    Brownfield property.

    EPA FRS registry ID 110020967603 (U.S. EPA Brownfields (ACRES)) Agency record

    Severity 3

  20. Paonia Wastewater Treatment Lagoons, Paonia

    Brownfield property.

    EPA FRS registry ID 110071974419 (U.S. EPA Brownfields (ACRES)) Agency record

    Severity 3

  21. 202 Gunnison River Drive, Delta

    Brownfield property.

    EPA FRS registry ID 110071975802 (U.S. EPA Brownfields (ACRES)) Agency record

    Severity 3

  22. Garnet Mesa Elementary School, Delta

    Brownfield property.

    EPA FRS registry ID 110072080382 (U.S. EPA Brownfields (ACRES)) Agency record

    Severity 3

  23. Anderson Pit, Delta

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110013742520 (U.S. EPA ECHO) Agency record

    Severity 3

  24. Phil'S Auto, Hotchkiss

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110046320147 (U.S. EPA ECHO) Agency record

    Severity 3

  25. Hotchkiss Wwtp, Hotchkiss

    NPDES wastewater discharge permit. Penalties $14,400.

    EPA FRS registry ID 110055974600 (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.

Discovery / public records

Records to request for Delta 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 Delta 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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