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Eau Claire County, Wisconsin: environmental and disease records

Cancer mortality in Eau Claire County is 143.6 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 272 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (129), Rail grade crossing (52), Brownfield property (18). 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: 44.7269, -91.2859.

How this county ranks in Wisconsin

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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 Eau Claire County compared with the United States
CancerMeasureCounty rateU.S. rateTimes U.S.95% intervalYears
Melanoma of the skinDeaths2.921.45x1.6 to 4.92020-2024
Melanoma of the skinNew cases31.323.81.32xSignificant26.8 to 36.32019-2023
Kidney & renal pelvisDeaths4.43.41.29x2.9 to 6.52020-2024
EsophagusDeaths4.73.71.27x3.2 to 6.82020-2024
PancreasDeaths13.911.31.23x11.2 to 172020-2024
EsophagusNew cases5.64.61.22x3.9 to 82019-2023
Brain & nervous systemDeaths5.34.41.2x3.5 to 7.62020-2024
PancreasNew cases16.413.91.18x13.4 to 19.92019-2023
Non-Hodgkin lymphomaDeaths5.24.81.08x3.5 to 7.32020-2024
Non-Hodgkin lymphomaNew cases19.118.51.03x15.8 to 22.92019-2023
All cancerDeaths143.6143.21x134.4 to 153.32020-2024
Brain & nervous systemNew cases6.26.21x4.3 to 8.72019-2023
LeukemiaDeaths5.75.71x4 to 7.92020-2024
Lung & bronchusDeaths29.830.20.99x25.8 to 34.32020-2024
StomachNew cases6.26.60.94x4.4 to 8.72019-2023
All cancerNew cases417.8453.40.92x401.5 to 434.62019-2023
BladderNew cases16.718.70.89x13.6 to 20.22019-2023
Kidney & renal pelvisNew cases15.517.90.87x12.4 to 19.22019-2023
Liver & bile ductDeaths5.76.60.86x4 to 7.92020-2024
Lung & bronchusNew cases43.651.80.84x38.7 to 49.12019-2023
Liver & bile ductNew cases7.28.70.83x5.3 to 9.62019-2023
LeukemiaNew cases10.814.50.74x8.4 to 13.82019-2023
ThyroidNew cases8.9130.68x6.5 to 122019-2023
BladderDeaths2.74.10.66x1.5 to 4.32020-2024

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 Eau Claire County
MeasureCountyU.S. medianDifferenceUnit
Premature death6,237.49,842.6-37%years of life lost before age 75 per 100,000
Life expectancy78.775.3+5%years
Child mortality33.459.8-44%deaths under age 18 per 100,000
Infant mortality5.16.2-18%deaths under age 1 per 1,000 live births
Injury deaths76.796.9-21%deaths per 100,000
Drug overdose deaths17.628.6-39%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.

  • Formaldehyde15.61 per million
  • Carbon Tetrachloride2.98 per million
  • Naphthalene1.73 per million
  • Acetaldehyde1.72 per million

EPA Air Quality Index 2025

Monitored on 365 days: 269 good, 11 unhealthy for sensitive groups or worse. Median AQI 38, peak 174.

Regulated facilities, sites and hazards by type

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

  • NPDES wastewater discharge permit129
  • Rail grade crossing52
  • Brownfield property18
  • Small hazardous waste generator13
  • Toxic chemical release facility (TRI)12
  • Hazardous waste transporter11
  • TRI reporting facility11
  • Air permit holder (minor source)8
  • Large hazardous waste generator6
  • Major air pollution source3
  • Public airport3
  • Large greenhouse gas emitter2
  • Heliport2
  • EPA air quality monitor1
  • Hydroelectric 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. Wrr Environmental Services, Eau Claire

    TRI reporting facility.

    EPA FRS registry ID 110070725846 (U.S. EPA ECHO) Agency record

    Severity 8.8

  2. Cascades Tissue Group - Wiscon Sin Inc., Eau Claire

    Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution), Certain glycol ethers, Ammonia, Polychlorinated biphenyls. Reports carcinogens. 98,176 lbs released over 5 years.

    TRI facility ID 54703PPTLB1200F (U.S. EPA Toxics Release Inventory)

    Severity 8.3

  3. Wrr Environmental Services Co Inc, Eau Claire

    Toxic chemical release facility (TRI). Chemicals: Dichloromethane, Toluene, Methanol, Chlorobenzene and 4 more. Reports carcinogens. 34,952 lbs released over 5 years.

    TRI facility ID 54701WRRNV5200S (U.S. EPA Toxics Release Inventory)

    Severity 8

  4. Cascades Tissue Group Wisconsin Inc, Eau Claire

    TRI reporting facility.

    EPA FRS registry ID 110000422748 (U.S. EPA ECHO) Agency record

    Severity 7.8

  5. Hutchinson Technology Inc, Eau Claire

    Toxic chemical release facility (TRI). Chemicals: N-Methyl-2-pyrrolidone, Copper And Copper Compounds, Nickel And Nickel Compounds, Chlorine and 1 more. Reports carcinogens. 2,861 lbs released over 5 years.

    TRI facility ID 54703HTCHN2435A (U.S. EPA Toxics Release Inventory)

    Severity 7.2

  6. American Phoenix Inc., Eau Claire

    Toxic chemical release facility (TRI). Chemicals: Zinc compounds, Antimony And Antimony Compounds, Antimony compounds, Thiram and 1 more. Reports carcinogens. 1,460 lbs released over 5 years.

    TRI facility ID 54701MRCNP800WI (U.S. EPA Toxics Release Inventory)

    Severity 6.9

  7. Lippert, Eau Claire

    Toxic chemical release facility (TRI). Chemicals: Manganese, Chromium, Nickel. Reports carcinogens. 897 lbs released over 5 years.

    TRI facility ID 5470WCRTMN628IN (U.S. EPA Toxics Release Inventory)

    Severity 6.8

  8. Wrr Environmental Services, Eau Claire

    Major air pollution source.

    EPA FRS registry ID 110070725846 (U.S. EPA ECHO) Agency record

    Severity 6.5

  9. Wrr Environmental Services, Eau Claire

    Large hazardous waste generator.

    EPA FRS registry ID 110070725846 (U.S. EPA ECHO) Agency record

    Severity 6

  10. Wrr Environmental Services, Eau Claire

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110070725846 (U.S. EPA ECHO) Agency record

    Severity 6

  11. EAU CLAIRE - DOT SIGN SHOP, Eau Claire

    EPA air quality monitor.

    Record ID 550350014 (U.S. EPA AirData)

    Severity 5.8

  12. Cascades Tissue Group Wisconsin Inc, Eau Claire

    Major air pollution source.

    EPA FRS registry ID 110000422748 (U.S. EPA ECHO) Agency record

    Severity 5.5

  13. Eau Claire Wastewater Treatment Plant, Eau Claire

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110002049239 (U.S. EPA ECHO) Agency record

    Severity 5.5

  14. Curt Manufacturing, Llc, Eau Claire

    TRI reporting facility.

    EPA FRS registry ID 110041686949 (U.S. EPA ECHO) Agency record

    Severity 5.4

  15. Wood Ecology Inc., Eau Claire

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

    TRI facility ID 54703WDCLG4780E (U.S. EPA Toxics Release Inventory)

    Severity 5.1

  16. American Phoenix Inc, Eau Claire

    TRI reporting facility.

    EPA FRS registry ID 110000422695 (U.S. EPA ECHO) Agency record

    Severity 5

  17. Cascades Tissue Group Wisconsin Inc, Eau Claire

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110000422748 (U.S. EPA ECHO) Agency record

    Severity 5

  18. Wood Ecology, Eau Claire

    TRI reporting facility.

    EPA FRS registry ID 110000857957 (U.S. EPA ECHO) Agency record

    Severity 4.6

  19. Eau Claire Co-Operative Oil Co, Eau Claire

    Toxic chemical release facility (TRI). Chemicals: Diisocyanates, Sodium nitrite, 2,4-D, Mecoprop and 4 more. Reports carcinogens.

    TRI facility ID 5470WCLRCP497KA (U.S. EPA Toxics Release Inventory)

    Severity 4.6

  20. American Materials - Eau Claire, Eau Claire

    Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens.

    TRI facility ID 5470WMRCNMW3189 (U.S. EPA Toxics Release Inventory)

    Severity 4.6

  21. Menard Inc Midwest Mfg & Dist, Eau Claire

    TRI reporting facility.

    EPA FRS registry ID 110000422720 (U.S. EPA ECHO) Agency record

    Severity 4.5

  22. Cascades Tissue Group Wisconsin Inc, Eau Claire

    Large greenhouse gas emitter.

    EPA FRS registry ID 110000422748 (U.S. EPA ECHO) Agency record

    Severity 4.5

  23. Burnside Dairy Inc, Nelson, Town Of

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110041243669 (U.S. EPA ECHO) Agency record

    Severity 4.5

  24. Seguins Valley View Acres Llc, Pleasant Valley, Town Of

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110046339299 (U.S. EPA ECHO) Agency record

    Severity 4.5

  25. Eau Claire Co-Operative Oil Co, Eau Claire

    TRI reporting facility.

    EPA FRS registry ID 110012179347 (U.S. EPA ECHO) Agency record

    Severity 4.3

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 Eau Claire County

  • Wisconsin 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 Eau Claire County, and their findings.

  • Wisconsin vital statistics office

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

  • Wisconsin health department, environmental epidemiology

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

  • Wisconsin 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.

  • Wisconsin 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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