“Circulation system” means the totality of the mechanical components including, but not limited to, pumps, hair and lint strainers, filters, valves, gauges, meters, heaters, surface skimmers, inlet/outlet fittings, and chemical feeding devices, that are a part of a system connected to a pool or spa which, when connected to each other by piping, perform as a coordinated system for purposes of maintaining pool or spa water in a clear and sanitary condition.

Source. (See Revision Note #2 at chapter heading for Env-Wq 1100) #10577, eff 5-1-14; ss by #13198, eff 5-1-21 (formerly Env-Wq 1102.08) (see Revision Note #3 at chapter heading for Env-Wq 1100)