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Nez Perce County, Idaho: environmental and disease records

Cancer mortality in Nez Perce County is 149.9 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 310 regulated facilities, sites and hazards inside the county, led by Rail grade crossing (78), Industrial wastewater discharge (63), NPDES wastewater discharge permit (56). EPA AirToxScreen estimates a lifetime cancer risk from outdoor air toxics of 30 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: 46.2447, -116.8219.

How this county ranks in Idaho

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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 Nez Perce County compared with the United States
CancerMeasureCounty rateU.S. rateTimes U.S.95% intervalYears
BladderDeaths6.34.11.54x3.9 to 9.92020-2024
Kidney & renal pelvisDeaths5.23.41.53x3 to 8.72020-2024
Non-Hodgkin lymphomaDeaths7.14.81.48x4.4 to 112020-2024
Brain & nervous systemNew cases8.26.21.32x5 to 12.82019-2023
PancreasDeaths14.311.31.27x10.4 to 19.32020-2024
EsophagusNew cases5.64.61.22x3.2 to 9.22019-2023
Melanoma of the skinNew cases27.223.81.14x21.1 to 34.72019-2023
ThyroidNew cases14.6131.12x9.9 to 20.82019-2023
PancreasNew cases15.513.91.12x11.4 to 20.92019-2023
LeukemiaDeaths65.71.05x3.6 to 9.62020-2024
All cancerDeaths149.9143.21.05x136.7 to 164.32020-2024
Liver & bile ductDeaths6.66.61x3.9 to 10.62020-2024
Liver & bile ductNew cases8.38.70.95x5.2 to 12.62019-2023
Lung & bronchusNew cases49.251.80.95x41.8 to 57.82019-2023
Non-Hodgkin lymphomaNew cases17.518.50.95x12.8 to 23.32019-2023
All cancerNew cases428.8453.40.95x404.9 to 453.82019-2023
BladderNew cases17.518.70.94x13.1 to 23.12019-2023
LeukemiaNew cases13.414.50.92x9.6 to 18.32019-2023
Lung & bronchusDeaths27.330.20.9x21.9 to 33.82020-2024
Kidney & renal pelvisNew cases15.617.90.87x11.4 to 212019-2023

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 Nez Perce County
MeasureCountyU.S. medianDifferenceUnit
Premature death10,0199,842.6+2%years of life lost before age 75 per 100,000
Life expectancy75.175.3-0%years
Child mortality73.859.8+23%deaths under age 18 per 100,000
Infant mortalityn/a6.2n/adeaths under age 1 per 1,000 live births
Injury deaths115.496.9+19%deaths per 100,000
Drug overdose deaths31.728.6+11%deaths per 100,000

Air toxics and air quality

EPA AirToxScreen 2020

Lifetime cancer risk from outdoor air toxics: 30 in a million. EPA treats 100 in a million as the upper end of acceptable risk and 1 in a million as the goal.

  • Formaldehyde16.44 per million
  • Carbon Tetrachloride2.85 per million
  • Acetaldehyde2.31 per million
  • Naphthalene1.72 per million

EPA Air Quality Index 2025

Monitored on 363 days: 263 good, 4 unhealthy for sensitive groups or worse. Median AQI 33, peak 161.

Regulated facilities, sites and hazards by type

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

  • Rail grade crossing78
  • Industrial wastewater discharge63
  • NPDES wastewater discharge permit56
  • Air permit holder (minor source)31
  • Gas station (mapped facility)15
  • TRI reporting facility12
  • Toxic chemical release facility (TRI)12
  • Auto repair or body shop (mapped facility)11
  • Small hazardous waste generator6
  • Brownfield property5
  • Large hazardous waste generator5
  • Public airport4
  • Major air pollution source2
  • EPA air quality monitor2
  • Hazardous waste transporter2
  • Airfield1
  • Commercial airport1
  • Large greenhouse gas emitter1
  • Heliport1
  • Biomass 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.

  1. Clearwater Paper Corp-Ppd & Cpd Idaho, Lewiston

    Toxic chemical release facility (TRI). Chemicals: Methanol, Ammonia, Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Hydrogen sulfide and 4 more. Reports carcinogens. 5,501,846 lbs released over 5 years.

    TRI facility ID 83501PTLTC805MI (U.S. EPA Toxics Release Inventory)

    Severity 9.7

  2. Clearwater Paper Corp, Lewiston

    TRI reporting facility. Penalties $807,481.

    EPA FRS registry ID 110053991720 (U.S. EPA ECHO) Agency record

    Severity 8.2

  3. Coleman Oil Co, Lewiston

    Toxic chemical release facility (TRI). Chemicals: Toluene, Xylene (mixed isomers), n-Hexane, Benzene and 3 more. Reports carcinogens. 7,820 lbs released over 5 years.

    TRI facility ID 83501CLMNL335MI (U.S. EPA Toxics Release Inventory)

    Severity 7.5

  4. Federal Cartridge Co-Cci, Lewiston

    Toxic chemical release facility (TRI). Chemicals: Cyanide compounds, Copper compounds, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Copper And Copper Compounds and 4 more. Reports carcinogens. 4,112 lbs released over 5 years.

    TRI facility ID 83501MRKND2299S (U.S. EPA Toxics Release Inventory)

    Severity 7.3

  5. Idaho Forest Group-Lewiston, Lewiston

    Toxic chemical release facility (TRI). Chemicals: Methanol, Lead compounds, Lead And Lead Compounds. 247,318 lbs released over 5 years.

    TRI facility ID 8350WDHFRS87MIL (U.S. EPA Toxics Release Inventory)

    Severity 7.1

  6. P Kay Metal Llc - Lewiston Facility, Lewiston

    TRI reporting facility. Penalties $8,280.

    EPA FRS registry ID 110070207172 (U.S. EPA ECHO) Agency record

    Severity 6.9

  7. Federal Cartridge Co-Speer, Lewiston

    TRI reporting facility. Penalties $76,213.

    EPA FRS registry ID 110000468495 (U.S. EPA ECHO) Agency record

    Severity 6.4

  8. P Kay Metal Lewiston, Lewiston

    Toxic chemical release facility (TRI). Chemicals: Lead And Lead Compounds, Lead, Lead compounds, Antimony And Antimony Compounds and 3 more. Reports carcinogens. 203 lbs released over 5 years.

    TRI facility ID 8350WPKYMT152SU (U.S. EPA Toxics Release Inventory)

    Severity 6.3

  9. Poe Asphalt Paving Inc., Lewiston

    Toxic chemical release facility (TRI). Chemicals: Polycyclic aromatic compounds. Reports carcinogens. 149 lbs released over 5 years.

    TRI facility ID 83501PSPHL4341S (U.S. EPA Toxics Release Inventory)

    Severity 6.2

  10. Idaho Forest Group Lewiston, Lewiston

    TRI reporting facility.

    EPA FRS registry ID 110063999632 (U.S. EPA ECHO) Agency record

    Severity 6.2

  11. Schweitzer Engineering Labs Inc-Lewiston Id Facility, Lewiston

    Toxic chemical release facility (TRI). Chemicals: Lead, Copper. Reports carcinogens. 100 lbs released over 5 years.

    TRI facility ID 8350WSCHWT2821J (U.S. EPA Toxics Release Inventory)

    Severity 6

  12. Poe Asphalt Paving Inc, Lewiston

    Toxic chemical release facility (TRI). Chemicals: Polycyclic aromatic compounds. Reports carcinogens. 39 lbs released over 5 years.

    TRI facility ID 83501PSPHL313HA (U.S. EPA Toxics Release Inventory)

    Severity 5.7

  13. Federal Cartridge Co-Speer, Lewiston

    Toxic chemical release facility (TRI). Chemicals: Lead, Copper, Antimony, Arsenic. Reports carcinogens. 30 lbs released over 5 years.

    TRI facility ID 83501MRKND1023S (U.S. EPA Toxics Release Inventory)

    Severity 5.6

  14. Coleman Oil East Lewiston Plant, Lewiston

    TRI reporting facility.

    EPA FRS registry ID 110000468486 (U.S. EPA ECHO) Agency record

    Severity 5.4

  15. Federal Cartridge Co-Southport, Lewiston

    Toxic chemical release facility (TRI). Chemicals: Nitric acid, Antimony compounds, Antimony And Antimony Compounds, Copper and 4 more. 1,100 lbs released over 5 years.

    TRI facility ID 83501BLNTN150SO (U.S. EPA Toxics Release Inventory)

    Severity 5.3

  16. P Kay Metal Llc - Lewiston Facility, Lewiston

    Large hazardous waste generator. Penalties $8,280.

    EPA FRS registry ID 110070207172 (U.S. EPA ECHO) Agency record

    Severity 5.3

  17. Federal Cartridge Co-Cci, Lewiston

    TRI reporting facility.

    EPA FRS registry ID 110000468501 (U.S. EPA ECHO) Agency record

    Severity 5.1

  18. Federal Cartridge Co Southport, Lewiston

    TRI reporting facility.

    EPA FRS registry ID 110000468477 (U.S. EPA ECHO) Agency record

    Severity 5.1

  19. Federal Cartridge Co-Speer, Lewiston

    Large hazardous waste generator. Penalties $76,213.

    EPA FRS registry ID 110000468495 (U.S. EPA ECHO) Agency record

    Severity 5

  20. Clearwater Paper Corp, Lewiston

    Major air pollution source. Penalties $807,481.

    EPA FRS registry ID 110053991720 (U.S. EPA ECHO) Agency record

    Severity 5

  21. Lewiston/Nez Perce County, Lewiston

    Commercial airport. O.

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

    Severity 5

  22. Atlas Sand And Rock, Lewiston

    TRI reporting facility.

    EPA FRS registry ID 110044954412 (U.S. EPA ECHO) Agency record

    Severity 4.7

  23. Genesee Wwtp, Genesee

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110039696255 (U.S. EPA ECHO) Agency record

    Severity 4.5

  24. Culdesac Wwtp, Culdesac

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110039886371 (U.S. EPA ECHO) Agency record

    Severity 4.5

  25. Clearwater Paper Corp, Lewiston

    NPDES wastewater discharge permit. Penalties $807,481.

    EPA FRS registry ID 110053991720 (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 Nez Perce County

  • Idaho 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 Nez Perce County, and their findings.

  • Idaho vital statistics office

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

  • Idaho health department, environmental epidemiology

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

  • Idaho 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.

  • Idaho 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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