Zip Code 77539
📍 San Leon, TX
Toxic Air Emissions Report (2024)
Data Source: EPA TRI (2024) • Updated Nov 2025
472.04 lbs
State Score
63
/ 100
National Score
62
/ 100
In 2024, industrial facilities in San Leon, TX released over 472.04 lbs of pollutants. The primary source was CLEAN HARBORS SAN LEON INC, which emitted Nickel compounds into the local air. Air quality in 77539 is relatively consistent with regional baselines.
Top Polluting Facilities
- CLEAN HARBORS SAN LEON INC Cancer RiskOwned by: CLEAN HARBORS INCNickel compounds released to air147.59 lbsLBS
- CLEAN HARBORS SAN LEON INC Cancer RiskOwned by: CLEAN HARBORS INCDichloromethane released to air114.97 lbsLBS
- CLEAN HARBORS SAN LEON INCOwned by: CLEAN HARBORS INCMethanol released to air80.449 lbsLBS
- CLEAN HARBORS SAN LEON INC Cancer RiskOwned by: CLEAN HARBORS INCCobalt compounds released to air70.779 lbsLBS
- CLEAN HARBORS SAN LEON INC Cancer RiskOwned by: CLEAN HARBORS INCBenzene released to air27.447 lbsLBS
- CLEAN HARBORS SAN LEON INCOwned by: CLEAN HARBORS INCCopper compounds released to air13.594 lbsLBS
- CLEAN HARBORS SAN LEON INCOwned by: CLEAN HARBORS INCToluene released to air7.255 lbsLBS
- CLEAN HARBORS SAN LEON INC Cancer RiskOwned by: CLEAN HARBORS INCMethyl isobutyl ketone released to air3.496 lbsLBS
- CLEAN HARBORS SAN LEON INCOwned by: CLEAN HARBORS INCZinc compounds released to air2.752 lbsLBS
- CLEAN HARBORS SAN LEON INC Cancer RiskOwned by: CLEAN HARBORS INCMolybdenum trioxide released to air1.841 lbsLBS
- CLEAN HARBORS SAN LEON INCOwned by: CLEAN HARBORS INCXylene (mixed isomers) released to air1.797 lbsLBS
- CLEAN HARBORS SAN LEON INCOwned by: CLEAN HARBORS INCN-Methyl-2-pyrrolidone released to air0.031 lbsLBS
- CLEAN HARBORS SAN LEON INCOwned by: CLEAN HARBORS INCEthylene glycol released to air0.025 lbsLBS
- CLEAN HARBORS SAN LEON INC Cancer RiskOwned by: CLEAN HARBORS INCLead released to air0.017 lbsLBS
Nearby Pollution Sources (< 20 miles)
- Texas City, TX (77590) 8.1 mi awayHeavy Industrial Activity1,549,346.81 lbsAnnual Emissions
- Deer Park, TX (77536) 16.4 mi awayHeavy Industrial Activity1,436,826.25 lbsAnnual Emissions
- Pasadena, TX (77507) 11.4 mi awayHeavy Industrial Activity1,096,540.42 lbsAnnual Emissions
Check Nearby Zip Codes
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Protect Your Lungs
Because toxic gases and VOCs were detected in this area (likely from the Toluene), 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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