1. (1) The manager shall ensure that:

   1. (a) a pool is equipped with disinfectant dosing or disinfectant generating equipment that conforms to the NSF/ANSI/CAN 50 -- 2021 Equipment and Chemicals for Swimming Pools, Spas, Hot Tubs, and Other Recreational Water Facilities; and

   2. (b) chlorine dosing or disinfectant generating equipment is designed with a capacity to provide the following chlorine amounts:

      1. (i) outdoor pools require four pounds of free available chlorine a day per 10,000 gallons of pool water; or
      2. (ii) indoor pools require 2-1/2 pounds of free available chlorine a day per 10,000 gallons of pool water.

2. (2) Where an automated controller, such as an ORP, is used, the manager shall ensure that:

   1. (a) poolside water testing is performed to verify automated controller calibration at least weekly;
   2. (b) an automated controller calibration check is completed as needed when poolside water testing results are inconsistent with the automated controller results; and
   3. (c) inspection and cleaning of sensor probes and chemical injectors are performed in accordance with the manufacturer's recommendations and as needed to reconcile poolside water testing results with the automated controller results.

3. (3) The manager shall ensure that positive displacement equipment and piping used to apply a chemical to the water is:

   1. (a) designed and constructed of materials that can be cleaned and maintained free from clogging; and
   2. (b) resistant to the damaging effects of the chemical in use.

4. (4) The manager shall ensure that:

   1. (a) each chemical feed system includes the following two layers of interlock protection for a low- or no-flow condition:

      1. (i) a flow meter or flow switch at the chemical controller; and
      2. (ii) each chemical feeder wired electrically to the circulation system that may include the use of a differential pressure switch, a pump power monitor, or other suitable means; and
   2. (b) the functionality of the interlocking protection mechanism is verified and documentation is prepared for the local health officer to review upon request.
5. (5) The requirements of Subsection (4)(a)(ii) do not apply to an erosion-type chemical feeder that does not rely on an electrical device to feed chemicals if an equivalent layer of interlock protection is provided, such as a check valve, to prevent chemical back-siphonage.

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