Maybe for a public pool, but I don't think that any local codes require a main drain on a residential swimming pool.Some states require them for code. Unfortunately for me, GA requires them.
If you have a link to a code requiring a main drain on a residential pool, please post it.
Suction Outlet Fitting Assembly (SOFA).


ANSI/PHTA/ICC-7 2020 American National Standard for Suction Entrapment Avoidance in Swimming Pools..
The purpose of this standard is to establish anti-entrapment performance requirements for public and residential swimming pools, wading pools, field-constructed spas and hot tubs, and any other bather-accessible body of water, including but not limited to, catch pools, infinity edge basins, and...
ANSI/PHTA/ICC-7 2020 American National Standard for Suction Entrapment Avoidance in Swimming Pools..
Published on Apr 19, 2021
The purpose of this standard is to establish anti-entrapment performance requirements for public and residential swimming pools, wading pools, field-constructed spas and hot tubs, and any other bather-accessible body of water, including but not limited to, catch pools, infinity edge basins, and water features that contain a skimmer, fully submerged Suction Outlet Fitting Assembly (SOFA) or vacuum port fitting. The term “pool” is used throughout this standard as an identifier for these bodies of water.
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