Zip Code 78642

📍 Liberty Hill, TX

Toxic Air Emissions Report (2024)

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

1.05 lbs

State Score

/ 100

National Score

/ 100

In 2024, industrial facilities in Liberty Hill, TX released over 1.05 lbs of pollutants. The primary source was SEWARD PLANT, which emitted Polycyclic aromatic compounds into the local air. Air quality in 78642 is relatively consistent with regional baselines.

Top Polluting Facilities

SEWARD PLANT Cancer Risk

Owned by: OLDCASTLE MATERIALS INC

Polycyclic aromatic compounds released to air

1.037 lbs

LBS
SEWARD PLANT

Owned by: OLDCASTLE MATERIALS INC

Benzo[g,h,i]perylene released to air

0.0156 lbs

LBS

Nearby Pollution Sources (< 20 miles)

Round Rock, TX (78664) 18.7 mi away

Heavy Industrial Activity

258.00 lbs

Annual Emissions
Cedar Park, TX (78613) 12.8 mi away

Heavy Industrial Activity

159.00 lbs

Annual Emissions
Georgetown, TX (78633) 11.2 mi away

Heavy Industrial Activity

1.07609 lbs

Annual Emissions

Check Nearby Zip Codes

Report: 78640 Report: 78644

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Protect Your Lungs

The primary pollutants detected here are likely heavy particulates. To protect your lungs, ensure you use a True HEPA (H13) filter, which captures 99.97% of airborne particles like Benzo[g,h,i]perylene.

View Recommended HEPA Filters →

Chemical Breakdown

Top 5 Pollutants by Weight

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