Zip Code 20850

📍 Rockville, MD

Toxic Air Emissions Report (2024)

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

1.17 lbs

State Score

/ 100

National Score

/ 100

In 2024, industrial facilities in Rockville, MD released over 1.17 lbs of pollutants. The primary source was LAFARGE MID ATLANTIC LLC -ROCKVILLE EAST CONCRETE, which emitted Mercury compounds into the local air. Air quality in 20850 is relatively consistent with regional baselines.

Top Polluting Facilities

LAFARGE MID ATLANTIC LLC -ROCKVILLE EAST CONCRETE

Owned by: HOLCIM PARTICIPATIONS (US) INC

Mercury compounds released to air

1.12 lbs

LBS
SCHUSTER CONCRETE READY MIX LLC-SOUTHLAWN LN Cancer Risk

Owned by: SCHUSTER CONCRETE READY MIX LLC

Lead released to air

0.0356 lbs

LBS
LAFARGE MID ATLANTIC LLC -ROCKVILLE EAST CONCRETE

Owned by: HOLCIM PARTICIPATIONS (US) INC

Lead compounds released to air

0.016 lbs

LBS

Nearby Pollution Sources (< 20 miles)

Fairfax, VA (22031) 16.5 mi away

Heavy Industrial Activity

2,804.43 lbs

Annual Emissions
Sterling, VA (20166) 17.9 mi away

Heavy Industrial Activity

1,726.40 lbs

Annual Emissions
Arlington, VA (22202) 17.0 mi away

Heavy Industrial Activity

1,265.67 lbs

Annual Emissions

Check Nearby Zip Codes

Report: 20876 Report: 20794 Report: 20781 Report: 20774 Report: 20762 Report: 20755

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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 Lead.

View Recommended HEPA Filters →

Chemical Breakdown

Top 5 Pollutants by Weight

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