Cooling towers remove heat from water through the process of evaporation. As a portion of the water is evaporated, minerals are left behind. Cooling towers create an ideal environment for the buildup of minerals and sediments, leading to the growth of bacteria and potential health hazards. Water treatment can help manage these mineral deposits, however to manage bacteria growth properly cooling towers should be thoroughly cleaned from the tower basis to the fill.
According to The United States Occupational Safety and Health Administration’s (OSHA) Technical Manual, all cooling towers should be thoroughly disinfected at a minimum of twice per year. Normally cleaning should be performed before the beginning of the cooling season and during heating season in the winter.
– the OSHA Technical Manual – Section III: Chapter 7
Unfortunately, our Texas climate does not allow for cooling towers to be shut down during normal business operating hours, and some building owners can only allow for one annual cleaning and maintenance during the winter. It is important to schedule your cooling tower maintenance in advance as most buildings require work to be performed during weekends or holiday’s while building occupants are away.