(1) Any pool, spa, or other water feature constructed or significantly modified after March 1, 2010 must use a centrifugal pump for water circulation. The pump shall be capable of providing the flow required for filtering the water against the total dynamic head developed by the complete recirculation system.

(2) The pump shall not be operated if any main drain grate plate or other suction cover or vacuum outlet cover is missing, broken, or loose. If such an event should occur, the pool, spa, or other water feature shall be shut down immediately and must remain closed until a proper repair or replacement has been accomplished.

(3) A cleanable strainer or screen shall be provided on all pressure filter systems upstream of all recirculation pumps to remove solids, debris, hair, lint, and other such matter. The strainer shall be constructed of noncorrosive material and shall be located so as to be easily accessible for regular cleaning. Strainers are not required in systems that use vacuum diatomaceous earth filters or vacuum sand filters.

(4) Pumps located below the waterline shall have valves installed on suction and discharge lines. The valves shall be located in a readily accessible place, to allow regular maintenance and to allow easy removal of the pumps. Pumps not located below the waterline shall be self-priming.

(5) All pumps shall comply with NSF/ANSI 50-2008.