Zip Code 01824
📍 Chelmsford, MA
Toxic Air Emissions Report (2024)
Data Source: EPA TRI (2024) • Updated Nov 2025
6,147.20 lbs
State Score
18
/ 100
National Score
42
/ 100
In 2024, industrial facilities in Chelmsford, MA released over 6,147.20 lbs of pollutants. The primary source was THERMO FISHER SCIENTIFIC, which emitted large quantities of Methanol into the local air. Air quality in 01824 is relatively consistent with regional baselines.
Top Polluting Facilities
- THERMO FISHER SCIENTIFICOwned by: nanMethanol released to air6,141.00 lbsLBS
- HOLCIM - NER INC. Cancer RiskOwned by: HOLCIM PARTICIPATIONS (US) INC.Polycyclic aromatic compounds released to air6.2 lbsLBS
Nearby Pollution Sources (< 20 miles)
- Lowell, MA (01851) 3.0 mi awayHeavy Industrial Activity103,890.00 lbsAnnual Emissions
- Everett, MA (02149) 19.9 mi awayHeavy Industrial Activity24,625.80 lbsAnnual Emissions
- Andover, MA (01810) 10.9 mi awayHeavy Industrial Activity20,536.18 lbsAnnual Emissions
Check Nearby Zip Codes
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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 Methanol.
View Recommended HEPA Filters →Chemical Breakdown
Top 5 Pollutants by Weight
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