1. (1) The manager shall ensure that:

   1. (a) each individual pool has an independent circulation system that is in continuous operation;
   2. (b) when the pool is open for bathing, the normal waterline of the pool is maintained to promote continuous skimming for any surge condition;
   3. (c) when an overflow gutter system is used, the water is maintained at the overflow rim of the gutter;
   4. (d) when a skimmer is used, the water is maintained at the midpoint of the skimmer opening;
   5. (e) the circulation system meets the minimum turnover time listed in Table 1;

   6. (f) if a single pool circulation system incorporates more than one of the pool types listed in Table 1:

      1. (i) the entire pool circulation system is designed with the shortest turnover rate required in Table 1 for the incorporated pool types; or
      2. (ii) the pool circulation system is designed with multiple circulation zones that each meet the recirculation flow rate required in Table 1;
   7. (g) the circulation equipment is operated continuously except for any period of maintenance;

   8. (h) a rate of flow indicator, reading in gallons per minute, is:

      1. (i) functioning; and

      2. (ii) properly installed:

         1. (A) according to manufacturer recommendations; and
         2. (B) in a place and position where authorized personnel can easily read the indicator;
      3. (i) the pump room, or the area housing the circulation equipment, is:

      4. (i) designed and maintained:

         1. (A) according to manufacturer recommendations; and
         2. (B) with adequate working space for equipment maintenance, including disassembly, removal, and replacement;
      5. (ii) protected from environmental conditions, including UV radiation; and
      6. (iii) secured from unauthorized personnel;

   9. (j) at least one valve:

      1. (i) regulates the control of water flow in the system of circulation pipes; and
      2. (ii) is located to be easily accessible for maintenance or replacement;

   10. (k) written operational instructions for circulation equipment are made available upon request;

       1. (l) circulation equipment, including multiport valves, if used, comply with NSF/ANSI/CAN 50 - 2021 Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities, incorporated by reference in this rule; and

   11. (m) each pump or series of pumps used for pool water circulation under normal operating conditions:

       1. (i) has adequate capacity to provide the minimum turnover rate specified in Table 1;
       2. (ii) can provide flow adequate for the backwashing of filters; and

       3. (iii) can maintain the required minimum circulation flow rate at a dynamic head that includes, in addition to fitting and friction losses:

          1. (A) except as described in Subsection (10), an additional 15 feet of head for pool inlet orifices; and
          2. (B)(aa) an additional 15 feet of head for rapid sand filters, vacuum precoat media filters, or vacuum cartridge filters; or
   12. (bb) an additional 40 feet of head for pressure precoat media filters, high-rate sand filters, or cartridge filters.

2. (2) A variable speed pump is permitted for pool water circulation if the manager ensures that:

   1. (a) the minimum circulation flow rate in the approved design and the minimum turnover rate required in Table 1 is maintained; and
   2. (b) the requirements of Section R392-302-25 are met.

3. (3) The manager shall ensure that:

   1. (a) piping is:

      1. (i) tested to meet:

         1. (A) NSF/ANSI/CAN 50 - 2021 Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities; or
         2. (B) NSF/ANSI Standard 14 -- 2021 Plastics Piping System Components and Related Materials standards;
      2. (ii) made of non-toxic material;
      3. (iii) resistant to corrosion;
      4. (iv) able to withstand normal operating pressures;
      5. (v) identified by a color code or label; and
      6. (vi) maintained in good condition; and

   2. (b) the maximum water velocity in:

      1. (i) discharge piping is eight feet per second; and
      2. (ii) suction piping is six feet per second.

4. (4) The manager shall ensure that the circulation system includes a pump strainer that:

   1. (a) prevents hair, lint, and other debris from reaching the pump;
   2. (b) is corrosion-resistant;
   3. (c) has openings not more than 3/16 inch in size;
   4. (d) provides a free flow capacity of at least four times the area of the pump suction line;
   5. (e) is easily accessible for frequent cleaning;
   6. (f) is maintained in a clean and sanitary condition; and
   7. (g) is provided with necessary valves to facilitate cleaning of the system without excessive flooding.

5. (5)(a) The manager shall ensure that a pool facility has a vacuum-cleaning system that facilitates access to any pool area through hoses less than 50 feet in length.

   1. (b) Except for a vacuum system operated from a skimmer, each vacuum connection in a vacuum system that depends on the pool circulation system is:

      1. (i) installed at least eight inches below the designed water line; and
      2. (ii) equipped with a finish fitting that requires tools to open and close the fitting.

6. (6) The manager shall ensure that any heat exchanger, pool water boiler, and pressure vessel:

   1. (a) has a fixed thermometer mounted in the pool circulation line downstream from the heater outlet; and
   2. (b) is provided with a heatsink, as required by the manufacturer's instructions.
7. (7) The manager shall ensure that any pool water boiler or pressure vessel meets the requirements of Rule R616-2.

8. (8) The manager shall ensure that each air induction system is designed and maintained to prevent:

   1. (a) any possibility of water backup that could cause electrical shock hazards;
   2. (b) an air intake from introducing contaminants, such as noxious chemicals, fumes, deck water, dirt, or other debris into the pool; and
   3. (c) the circulation line of a jet system or other form of water agitation from connecting to the pool water circulation, filtration, or heating system.

9. (9) The manager shall ensure that each chemical feed system includes two layers of interlocking protection for a low- or no-flow condition so that the operation of any chemical feeder is dependent upon the operational flow of the main circulation system; and

   1. (a) the functionality of the interlocking mechanism is verified and documented to the local health department; and

   2. (b) the interlocking mechanism is accomplished through an electrical interlock consisting of:

      1. (i) a flow meter or flow switch at the chemical controller if a controller is being used; and
      2. (ii) a differential pressure switch, a pump power monitor, or other suitable means that is wired electrically to both the chemical feeder and the circulation pump.
10. (10) The local health officer may require the manager to demonstrate that the circulation system is performing in accordance with the approved design.

11. (11) The head loss requirement for pool inlet orifices may be reduced as described in Subsection (1)(m)(iii)(A) if the manager can demonstrate to the local health officer, through a licensed design professional, that at least a six to one pressure ratio from the pool inlet orifice to the return loop is maintained.

    TABLE 1CirculationPool TypeMinimum Number of Skimmers per 3,500 square feet of Surface Area or LessMinimum Turnover RateInstructional poolOne per 500 square feet of surface area or fraction thereofSix hours

    Swimming poolOne per 500 square feet of surface area or fraction thereofSix hoursWading pool or wading areaOne per 500 square feet of surface area or fraction thereof One hourSpa poolOne per 100 square feet of surface area or fraction thereof1/2 hourWave poolOne per 500 square feet of surface area or fraction thereofSix hoursSlide splash poolOne per 500 square feet of surface area or fraction thereofOne hourVehicle slideOne per 500 square feet of surface area or fraction thereofOne hourSpecial purpose pool unless otherwise describedOne per 500 square feet of surface area or fraction thereofOne hourLazy riverOne per 500 square feet of surface area or fraction thereofTwo hoursSurf poolSpaced according to manufacturer recommendations Manufacturer recommended turnover rate

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