| (a) Disinfectant agent. Pool and spa water shall be
continuously disinfected by a disinfectant agent, chlorine or bromine,
with a residual that can be easily measured by simple and accurate
field tests.
(b) Water treatment chemicals. Treatment chemicals
shall be certified, listed, and labeled to either NSF/ANSI Standard
50 or NSF/ANSI Standard 60 or have an EPA FIFRA registration and be
used only in accordance with the manufacturer's instructions.
(c) Chlorine gas prohibited. Use of compressed chlorine
gas is prohibited.
(d) 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, shall 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
shall be kept on-site and be readily available.
(e) Application of disinfectant in a pool or spa. Automated
controllers that adjust chemical feed based on demand or manually,
or remotely managed controllers for pool and spa disinfection and
pH control shall be installed.
(1) Disinfection equipment shall be selected and installed
so that continuous and effective disinfection can be achieved under
all conditions.
(2) Disinfectant feed systems shall have the capacity
to maintain up to 5 parts per million (ppm) (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.
(f) 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 shall apply:
(1) tests of disinfectant levels and pH shall be performed;
(2) the tests shall be performed 30 minutes after hand
distribution; and
(3) 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 for disinfectant level and pH.
(g) Bulk chemical tanks. All chemical bulk and day
tanks shall be clearly labeled to indicate the tank's contents.
(h) Chemical storage areas.
(1) Disinfectant agents, other chemicals, and feed
equipment shall be stored so that pool and spa users do not have access.
(2) Dry chemicals shall 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 shall not be stored in the same
storage room or storage area as petroleum products.
(i) Chemical feeders. Chemical feeders for pools and
spas shall meet NSF Standard 50 and shall operate in a manner that
does not invalidate the NSF 50 rating for the system and system equipment.
Chemical feeders shall:
(1) be installed, maintained, and operated in accordance
with the manufacturer's instructions;
(2) be installed so that the solution is introduced
downstream from the filter and heater and, when possible, at a point
lower than the heater outlet fitting or according to manufacturer's
instructions;
(3) incorporate failure-proof features so that the
chemical cannot feed into the pool or spa, the pool or spa piping
system, or water supply system, or into the pool and spa yard if equipment
or power fails; and
(4) if the system has chemical feed pumps, be wired
so they cannot operate unless there is adequate return flow to properly
disburse the chemical in the pool or spa and be regulated to ensure
constant feed with varying supply or back pressure.
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