Zip Code 78666

📍 San Marcos, TX

Toxic Air Emissions Report (2024)

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

5,203.87 lbs

State Score

/ 100

National Score

/ 100

In 2024, industrial facilities in San Marcos, TX released over 5,203.87 lbs of pollutants. The primary source was EPIC PIPING, which emitted large quantities of Xylene (mixed isomers) into the local air. Air quality in 78666 is relatively consistent with regional baselines.

Top Polluting Facilities

EPIC PIPING

Owned by: EPIC PIPING LLC

Xylene (mixed isomers) released to air

5,203.56 lbs

LBS
PAVESTONE - SAN MARCOS TX PLANT Cancer Risk

Owned by: QUIKRETE HOLDINGS

Lead released to air

0.3105 lbs

LBS

Nearby Pollution Sources (< 20 miles)

New Braunfels, TX (78132) 17.5 mi away

Heavy Industrial Activity

189,820.04 lbs

Annual Emissions
Buda, TX (78610) 15.8 mi away

Heavy Industrial Activity

7,748.03 lbs

Annual Emissions
New Braunfels, TX (78130) 13.2 mi away

Heavy Industrial Activity

2,813.09 lbs

Annual Emissions

Check Nearby Zip Codes

Report: 78665 Report: 78664 Report: 78669

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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 Xylene (mixed isomers).

View Recommended HEPA Filters →

Chemical Breakdown

Top 5 Pollutants by Weight

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