Zip Code 54421

📍 Colby, WI

Toxic Air Emissions Report (2024)

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

2.00 lbs

State Score

/ 100

National Score

/ 100

In 2024, industrial facilities in Colby, WI released over 2.00 lbs of pollutants. The primary source was COLBY METAL INC, which emitted Manganese into the local air. Air quality in 54421 is relatively consistent with regional baselines.

Top Polluting Facilities

COLBY METAL INC

Owned by: nan

Manganese released to air

2 lbs

LBS

Nearby Pollution Sources (< 20 miles)

Marshfield, WI (54449) 18.5 mi away

Heavy Industrial Activity

14,734.98 lbs

Annual Emissions
Greenwood, WI (54437) 19.2 mi away

Heavy Industrial Activity

15.4 lbs

Annual Emissions
Stratford, WI (54484) 15.1 mi away

Heavy Industrial Activity

11.31 lbs

Annual Emissions

Check Nearby Zip Codes

Report: 54409 Report: 54407 Report: 54405 Report: 54437 Report: 54401 Report: 54443

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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 Manganese.

View Recommended HEPA Filters →

Chemical Breakdown

Top 5 Pollutants by Weight

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