Drift Emissions Testing Services

Cooling towers emit drift – which is a small fraction of their circulating water. The evaporation of cooling tower drift leads to PM emissions that cause downwind corrosion, icing, transmit legionella, and present other safety concerns. The US EPA considers cooling towers to be a source of particulate matter (PM) emissions so drift is often regulated by local air permits. Federal emissions factors as published in AP-42 are grossly conservative. This means facilities using AP-42 factors are “over-reporting” the amount of drift and associated PM from their cooling towers. We can accurately test your cooling tower drift emissions per industry standards so that you can report realistic drift and PM numbers.