The cleaning frequency of desalination reservoirs depends on their design, whether they are covered or open, and the level of maintenance required to preserve water quality. Covered reservoirs and closed storage tanks typically need less frequent cleaning since they are well protected from dust, debris, and sunlight. These may only be drained and cleaned every few years, often during scheduled maintenance periods, as long as routine monitoring shows water quality is stable.
Open reservoirs, on the other hand, are more exposed to contamination from windblown material, animals, or algae growth. These generally require more frequent cleaning, which may range from annual to every few years depending on conditions. In some cases, partial cleaning or sediment removal can be done without fully draining the reservoir, while more thorough cleanings are scheduled when water levels are low or when significant buildup is detected.
