Zip Code 91784

📍 Upland, CA

Toxic Air Emissions Report (2024)

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

54.72 lbs

State Score

/ 100

National Score

/ 100

In 2024, industrial facilities in Upland, CA released over 54.72 lbs of pollutants. The primary source was HOLLIDAY ROCK CO INC - CAMPUS, which emitted Aluminum (fume or dust) into the local air. Air quality in 91784 is relatively consistent with regional baselines.

Top Polluting Facilities

HOLLIDAY ROCK CO INC - CAMPUS

Owned by: HOLLIDAY ROCK CO INC

Aluminum (fume or dust) released to air

46.238 lbs

LBS
HOLLIDAY ROCK CO INC - CAMPUS

Owned by: HOLLIDAY ROCK CO INC

Manganese released to air

4.792 lbs

LBS
HOLLIDAY ROCK CO INC - CAMPUS

Owned by: HOLLIDAY ROCK CO INC

Lead compounds released to air

1.6 lbs

LBS
HOLLIDAY ROCK CO INC - CAMPUS

Owned by: HOLLIDAY ROCK CO INC

Copper released to air

1.233 lbs

LBS
HOLLIDAY ROCK CO INC - CAMPUS Cancer Risk

Owned by: HOLLIDAY ROCK CO INC

Polycyclic aromatic compounds released to air

0.841 lbs

LBS
HOLLIDAY ROCK CO INC - CAMPUS

Owned by: HOLLIDAY ROCK CO INC

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

0.0134 lbs

LBS

Nearby Pollution Sources (< 20 miles)

Jurupa Valley, CA (91752) 12.8 mi away

Heavy Industrial Activity

69,997.03 lbs

Annual Emissions
Rancho Cucamonga, CA (91730) 4.3 mi away

Heavy Industrial Activity

19,623.89 lbs

Annual Emissions
Ontario, CA (91761) 7.9 mi away

Heavy Industrial Activity

13,199.37 lbs

Annual Emissions

Check Nearby Zip Codes

Report: 91786

😷

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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