Common Sources Of Indoor Environment Pollution
The US EPA recognizes that indoor air pollution can be 10 to 100 times as polluted as outdoor air, even when compared to a smoggy Los Angeles day.
Where does this pollution come from? From many sources including, but not exclusive to:
- fungal spores
- industrial emissions
- vehicle emissions (busses, loading docks, exhausts near outdoor air intakes, furnace stack emissions)
- roofing tars
- sewer gas
- chemical emissions from new furniture
- particle board, plastics, room dividers, curtains, ceiling tiles…
- Microbial growth on furnishings and carpets
- dust, mould, or debris in ductwork, coils, humidifiers, drip pans, etc.
- Improper venting of combustion products
- low air delivery rates
- no hvac present
- turning off hvacs after hours
- underground fuel tank leaks
- building materials: insulation, caulking, paints, varnishes, glues
- art and science labs, technical/vocational areas, cooking labs.
- Office supplies; felt markers, whiteout, inks, laminators, photocopiers, printers
- fire retardants
- scented personal products
- smoking lounges
- cleaning agents, waxes and floor strippers
- air fresheners
- aerosol sprays
- combustion gasses from furnaces, stoves, etc.
- Flooring: carpets, soft vinyl tile and glues
- thermal comfort
- acoustics: noise pollution
- electromagnetic fields
- infrequent or inadequate cleaning