🍃 CleanAirDB

Zip Code 37921

📍 Knoxville, TN

Toxic Air Emissions Report (2024)

Data Source: EPA TRI (2024) • Updated Nov 2025

49,316.56 lbs
State Score
25
/ 100
National Score
17
/ 100

In 2024, industrial facilities in Knoxville, TN released over 49,316.56 lbs of pollutants. The primary source was ROHM & HAAS CHEMICALS LLC - KNOXVILLE SITE, which emitted large quantities of Ammonia into the local air. Residents of 37921 face significantly higher exposure risks than the national average.

Top Polluting Facilities

  • ROHM & HAAS CHEMICALS LLC - KNOXVILLE SITE
    Owned by: DOW INC
    Ammonia released to air
    10,767.00 lbs
    LBS
  • ROHM & HAAS CHEMICALS LLC - KNOXVILLE SITE
    Owned by: DOW INC
    m-Xylene released to air
    10,478.00 lbs
    LBS
  • CMC STEEL TENNESSEE
    Owned by: COMMERCIAL METALS CO
    Zinc compounds released to air
    9,473.00 lbs
    LBS
  • ROHM & HAAS CHEMICALS LLC - KNOXVILLE SITE Cancer Risk
    Owned by: DOW INC
    Ethyl acrylate released to air
    3,117.00 lbs
    LBS
  • ROHM & HAAS CHEMICALS LLC - KNOXVILLE SITE
    Owned by: DOW INC
    Methyl methacrylate released to air
    2,738.00 lbs
    LBS
  • ROHM & HAAS CHEMICALS LLC - KNOXVILLE SITE Cancer Risk
    Owned by: DOW INC
    Styrene released to air
    2,040.00 lbs
    LBS
  • ROHM & HAAS CHEMICALS LLC - KNOXVILLE SITE
    Owned by: DOW INC
    Acrylic acid released to air
    1,748.00 lbs
    LBS
  • ROHM & HAAS CHEMICALS LLC - KNOXVILLE SITE
    Owned by: DOW INC
    Maleic anhydride released to air
    1,064.00 lbs
    LBS
  • CMC STEEL TENNESSEE
    Owned by: COMMERCIAL METALS CO
    Lead compounds released to air
    1,048.00 lbs
    LBS
  • ROHM & HAAS CHEMICALS LLC - KNOXVILLE SITE
    Owned by: DOW INC
    Toluene released to air
    958.00 lbs
    LBS
  • MPLX TERMINALS LLC - KNOXVILLE TN LP TERMINAL
    Owned by: MARATHON PETROLEUM CORP
    n-Hexane released to air
    950.00 lbs
    LBS
  • CMC STEEL TENNESSEE
    Owned by: COMMERCIAL METALS CO
    Manganese compounds released to air
    925.00 lbs
    LBS
  • MPLX TERMINALS LLC - KNOXVILLE TN LP TERMINAL
    Owned by: MARATHON PETROLEUM CORP
    Toluene released to air
    770.00 lbs
    LBS
  • ROHM & HAAS CHEMICALS LLC - KNOXVILLE SITE Cancer Risk
    Owned by: DOW INC
    Acrylonitrile released to air
    654.00 lbs
    LBS
  • ROHM & HAAS CHEMICALS LLC - KNOXVILLE SITE
    Owned by: DOW INC
    Butyl acrylate released to air
    646.00 lbs
    LBS
  • MPLX TERMINALS LLC - KNOXVILLE TN LP TERMINAL Cancer Risk
    Owned by: MARATHON PETROLEUM CORP
    Benzene released to air
    530.00 lbs
    LBS
  • MPLX TERMINALS LLC - KNOXVILLE TN LP TERMINAL
    Owned by: MARATHON PETROLEUM CORP
    Xylene (mixed isomers) released to air
    310.00 lbs
    LBS
  • MPLX TERMINALS LLC - KNOXVILLE TN LP TERMINAL
    Owned by: MARATHON PETROLEUM CORP
    Cyclohexane released to air
    290.00 lbs
    LBS
  • CMC STEEL TENNESSEE
    Owned by: COMMERCIAL METALS CO
    Copper compounds released to air
    209.00 lbs
    LBS
  • CMC STEEL TENNESSEE
    Owned by: COMMERCIAL METALS CO
    Chromium compounds (except for chromite ore mined in the Transvaal Region) released to air
    193.00 lbs
    LBS
  • ROHM & HAAS CHEMICALS LLC - KNOXVILLE SITE
    Owned by: DOW INC
    N-Methylolacrylamide released to air
    161.00 lbs
    LBS
  • CMC STEEL TENNESSEE
    Owned by: COMMERCIAL METALS CO
    Mercury compounds released to air
    91.1 lbs
    LBS
  • CMC STEEL TENNESSEE Cancer Risk
    Owned by: COMMERCIAL METALS CO
    Nickel compounds released to air
    69 lbs
    LBS
  • MPLX TERMINALS LLC - KNOXVILLE TN LP TERMINAL Cancer Risk
    Owned by: MARATHON PETROLEUM CORP
    Ethylbenzene released to air
    62 lbs
    LBS
  • MPLX TERMINALS LLC - KNOXVILLE TN LP TERMINAL
    Owned by: MARATHON PETROLEUM CORP
    1,2,4-Trimethylbenzene released to air
    8 lbs
    LBS
  • CMC STEEL TENNESSEE Cancer Risk
    Owned by: COMMERCIAL METALS CO
    Dioxin and dioxin-like compounds released to air
    6.36 lbs
    LBS
  • MPLX TERMINALS LLC - KNOXVILLE TN LP TERMINAL Cancer Risk
    Owned by: MARATHON PETROLEUM CORP
    Cumene released to air
    6 lbs
    LBS
  • MPLX TERMINALS LLC - KNOXVILLE TN LP TERMINAL Cancer Risk
    Owned by: MARATHON PETROLEUM CORP
    Naphthalene released to air
    4 lbs
    LBS
  • SAFETY-KLEEN SYSTEMS KNOXVILLE (KNO)
    Owned by: CLEAN HARBORS INC
    Ethylene glycol released to air
    1 lbs
    LBS
  • ROHM & HAAS CHEMICALS LLC - KNOXVILLE SITE
    Owned by: DOW INC
    Lead compounds released to air
    0.1 lbs
    LBS

Nearby Pollution Sources (< 20 miles)

Check Nearby Zip Codes

Report: 37924
😷

Protect Your Lungs

Because toxic gases and VOCs were detected in this area (likely from the Benzene), standard filters are not enough. We strongly recommend an Activated Carbon purifier to adsorb these fumes.

View Recommended Carbon Filters →

Chemical Breakdown

Top 5 Pollutants by Weight

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