Current through Reg. 49, No. 38; September 20, 2024
(a) Disinfectant
agent. Pool and spa water must be continuously disinfected by a chlorine or
bromine disinfectant agent that can be easily measured by simple and accurate
field tests.
(b) Supplemental
treatment systems. Supplemental treatment systems may be installed and used on
pools and spas.
(1) Supplemental treatment
systems used only to treat water in a pool or spa and not a public interactive
water feature or fountain (PIWF) are not required to meet the minimum 3-log or
2-log inactivation of Cryptosporidium parvum.
(2) Supplemental treatment systems used to
treat water in a PIWF must comply with the requirements in §
265.306(g) of
this chapter (relating to Water Quality at Public Interactive Water Features
and Fountains) referring to supplemental water treatment systems for
PIWFs.
(3) Supplemental treatment
systems must meet NSF Standard 50 or NSF Standard 60, have an Environmental
Protection Agency (EPA) or FIFRA registration, and be used in accordance with
the manufacturer's instructions.
(c) Secondary disinfection systems. Secondary
disinfection systems may be installed and used on a pool or spa and must be
certified, listed, and labeled to NSF Standard 50.
(1) Secondary disinfection systems must
achieve a minimum 2-log (99%) reduction in the number of infective
Cryptosporidium parvum oocysts per pass though the treatment
system; and
(2) must be located in
the treatment system so that the 2-log reduction is obtained.
(3) Validation records, as applicable, and
operation records must be maintained for any secondary disinfection system or
treatment, and must be maintained on-site, or made available to the inspector
within five business days upon request if kept off-site.
(d) Water treatment chemicals. Treatment
chemicals must be certified, listed, and labeled to either NSF Standard 50 or
NSF Standard 60 or have an EPA FIFRA registration and be used only in
accordance with the manufacturer's instructions.
(e) Chlorine gas prohibited. Use of
compressed chlorine gas is prohibited in pools and spas constructed on or after
January 1, 2021.
(f) Training and
protection. Personnel responsible for the operation of the disinfectant agent
and other potentially hazardous chemicals, whether it is the trained and
certified operator, or someone assigned to maintain a pool or spa when the
trained and certified operator is not on-site, must be properly trained and
provided with appropriate protective equipment and clothing, including rubber
gloves and goggles, safety information, and safety data sheets. Safety data
sheets covering all chemicals for which personnel are responsible must be kept
on-site and be readily available.
(g) Application of disinfectant in a pool or
spa.
(1) Automatic distribution of chemicals.
If using automatic feeders, automated controllers that adjust chemical feed
based on demand or manually, or remotely managed controllers for pool and spa
disinfection and pH control, must be installed. Automatic feeders must meet NSF
Standard 50 for use in public pools and spas and must operate in a manner that
does not invalidate the NSF rating for the system and equipment.
(A) Controllers that adjust chemical feed
either manually or automatically are required.
(B) Disinfection equipment must be selected
and monitored so that continuous and effective disinfection can be achieved
under all conditions.
(C)
Disinfectant feed systems must have the capacity to maintain up to 5 parts per
million (ppm) chlorine (or equivalent bromine level) in outdoor pools and spas
and up to 3 ppm chlorine (or equivalent bromine level) in indoor pools and spas
under all conditions of intended use.
(D) Skimmer baskets or floating dispensers
may not be used to dispense disinfectant, chemicals that adjust pH, or
algaecides.
(2) Hand
distribution of chemicals. Hand distribution of disinfectant chemicals,
chemicals used to adjust pH, or algaecides is prohibited when users are in the
pool or spa. Before users reenter the pool or spa following hand distribution
of disinfectant chemicals, chemicals used to adjust pH, or algaecides, the
following applies:
(A) tests of disinfectant
levels and pH must be performed 30 minutes after hand distribution;
and
(B) no one may reenter the pool
or spa until the disinfectant levels and pH are checked and are found to be
within the required range.
(h) Bulk chemical tanks. All chemical bulk
and day tanks must be clearly labeled to indicate the tank's
contents.
(i) Chemical storage
areas.
(1) Disinfectant agents, other
chemicals, and feed equipment must be stored so that pool and spa users and
other unauthorized persons do not have access.
(2) Dry chemicals must be stored off the
floor or in waterproof containers in a dry room and protected against flooding
or wetting from floors, walls and ceiling.
(3) Chlorine compounds must not be stored in
the same storage room or storage area as petroleum products.
