Backwashing is essential to maintaining clean and healthy pool water. This detailed guide explains how often to backwash different filter types based on pressure gauge readings, usage, and environmental factors. Step-by-step instructions, common pitfalls, and expert tips ensure efficient maintenance that optimizes filtration, protects equipment, and conserves water. Whether your system uses sand or DE filters, following these guidelines guarantees crystal-clear water and a longer lifespan for your pool filter.