Home / Home / What's the real trick to winterizing outdoor plumbing?Home Swimming PoolsWhat's the real trick to winterizing outdoor plumbing?Drain the pump and filter lines to protect the pump and plumbing from freezing. Search Amazon As an Amazon Associate I earn from qualifying purchases.Related NotesExploreExploreExplorePrevious What's the safest way to scrub algae off a pool wall?Next What's the most important safety rule for using an automatic pool cleaner?