Minnesota Administrative Rules

4717.2560 RECIRCULATION RATE.

Subpart 1.

General recirculation rate.

The water recirculation system must clarify and disinfect the pool volume of water in six hours or less.

Subp. 2.

Wading pools and special purpose pools.

The water recirculation system of a wading pool or a special purpose pool must recirculate a water volume equal to the pool volume in two hours or less.

Subp. 3.

Spa pools.

The recirculation system in a spa pool must recirculate a water volume equal to the pool volume in 30 minutes or less, except that a minimum rate of 35 gallons per minute is required.

Subp. 4.

Dedicated plunge pools.

The recirculation system of a dedicated plunge pool must recirculate a water volume equal to the total volume of the pool in one hour or less.

Subp. 5.

Pools with zero depth area.

The recirculation system of a pool with a zero depth end must recirculate water at the rate specified in this subpart.

A.

The area of the pool with a water depth of less than three feet must have a recirculation rate of two hours or less.

B.

The remainder of the pool must meet the requirements in subpart 1.

C.

A system of bottom inlets must be provided in the shallow end.

Statutory Authority:

MS s 144.05; 144.12; 144.123; 145A.02; 157.01

History:

19 SR 1419; 19 SR 1637

Published Electronically:

May 11, 2009