1. (1) The manager shall ensure that:

   1. (a) inlets for potable or treated water are:

      1. (i) located to facilitate:

         1. (A) uniform circulation of water; and
         2. (B) a uniform disinfectant residual throughout the entire pool; and
      2. (ii) hydraulically sized to provide the designed flow rate for each zone of multi-zoned pools based on the designed turnover rate for each zone; and

   2. (b) if wall inlets from the circulation system are used, each wall inlet is:

      1. (i) flush with the pool wall and located:

         1. (A) at least five feet below the normal water level; or
         2. (B) at the bottom of the vertical wall surface tangent to the arc forming the transition between the vertical wall and the floor of the pool;
      2. (ii) except as provided in Subsections R392-302-37(4) and R392-302-40(1)(a)(iv), spaced no more than every ten feet around the pool perimeter; and

      3. (iii) designed as a directionally adjustable and lockable orifice, or a drilled orifice, with sufficient head loss to ensure balancing of flow through each wall inlet as related to the other wall inlets such that:

         1. (A) the return loop piping is sized to provide less than 2-1/2 feet of head loss to the most distant orifice to ensure equal water flow through every orifice; and
         2. (B) wall inlets are locked in place once adjusted for uniform circulation.

2. (2) If floor inlets are installed in addition to wall inlets, the manager shall ensure there is at least one row of floor inlets centered in the pool width with piping installed in accordance with Subsection R392-302-19(3) such that:

   1. (a) individual floor inlets and rows of floor inlets are spaced a maximum of 15 feet from each other; and
   2. (b) floor inlets are at least 20 feet from a pool wall with wall inlets.

3. (3) If floor inlets from the circulation system are used, the manager shall ensure each floor inlet is:

   1. (a) flush with the floor;
   2. (b) placed at no more than 20-foot intervals from other floor inlets;
   3. (c) spaced no more than 7-1/2 feet from the pool wall if there are no wall inlets on that wall;
   4. (d) designed such that the flow can be adjusted to provide sufficient head loss to ensure balancing of water flow through every floor inlet; and

   5. (e) designed such that the flow cannot be adjusted without the use of a tool such that:

      1. (i) the return supply piping is sized to provide less than 2-1/2 feet of head loss to the most distant floor inlet to ensure equal water flow through every floor inlet; and
      2. (ii) floor inlets are locked in place once adjusted for uniform circulation.
4. (4) The manager shall install floor inlets if a pool has a width greater than 50 feet.

KEY: pools, spas, swimming, water

Date of Last Change: May 26, 2026

Notice of Continuation: October 21, 2021

Authorizing, and Implemented or Interpreted Law: 26B-1-202; 26B-7-113; 26B-7-124; 26B-7-402