What type of water should be used for backwashing the filters?

The use of filtered water for backwashing the filters is considered the best practice because it minimizes the potential for introducing new contaminants back into the filtration system. Backwashing is a process used to clean the filter media by reversing the flow of water, allowing trapped particulates to be expelled. When filtered water is utilized for this purpose, it ensures that the backwashing process does not inadvertently reintroduce impurities present in raw or untreated water, which could compromise the overall water quality and the effectiveness of the filtration system.

Using filtered water also helps maintain consistent operational performance, as it provides an effective means to dislodge particulates collected in the filter media while avoiding spikes in turbidity or microbial contaminants that would be more likely if raw or untreated water were used. Additionally, employing filtered water for backwashing supports compliance with health and safety regulations by ensuring that the water returned to the system or the environment is of acceptable quality.