Equipment
Sand Filter
A filter that pushes pool water through a bed of #20 silica sand, trapping debris to 20–40 microns. Old standard, rarely spec'd new in AZ.
Sand filters are reliable and cheap but the coarsest of the three filter types. They require periodic backwashing, which wastes water and is now restricted in many Valley cities. New AZ builds rarely use sand; it's mostly seen on legacy 1990s and 2000s pools.
Written and reviewed by AE Outdoor Living — Arizona ROC-licensed pool & outdoor living contractor.
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