[Ord. No. 07-110 §1, 8-14-2007]
A.
A public
or semi-public swimming pool or spa shall have a water circulation
system that provides complete circulation of water through all parts
of the swimming pool or spa and can maintain water chemistry and water
clarity requirements.
B.
The
water circulation system for a public or semi-public swimming pool
shall provide a minimum of four (4) turnovers of the pool volume per
day. Pools that are less than one thousand (1,000) square feet at
fitness centers shall be required to provide eight (8) turnovers per
day. The water circulation system of a public or semi-public spa shall
have a turnover rate of at least once every thirty (30) minutes. The
water circulation system for a wading pool shall have a turnover rate
of at least once every one (1) hour. The water circulation system
shall be designed to give the proper turnover rate without exceeding
the maximum filtration rate for the filter.
C.
Water
circulation system components shall comply with American National
Standards Institute/NSF International Standard Number 50 "Circulation
System Components and Related Materials for Swimming Pools, Spas/Hot
Tubs", NSF International, which is incorporated by reference.
D.
Water
circulation system components shall be accessible for inspection,
repair or replacement.
E.
Water
withdrawn from a public or semi-public aquatic center shall not be
returned unless it has been filtered and adequately disinfected except
that water may be withdrawn from a swimming pool for water slide(s),
water feature(s) or a water fountain(s) without being filtered or
disinfected as approved on a case-by-case basis by the department.
F.
In
an aquatic center with more than one (1) swimming pool or where there
is a combination of swimming pools and spas, each swimming pool and
spa shall have a separate water circulation system.
G.
Hydrotherapy
jets or other devices which create roiling water or similar effects
in a spa shall not be connected to the water circulation system, but
shall be operated through a separate system.
[Ord. No. 07-110 §1, 8-14-2007]
Effective water disinfection shall be provided and maintained
in all aquatic centers. This shall be accomplished by chlorination
or other approved methods which will effectively maintain an adequate
amount of the disinfectant introduced into the water which is subject
to field testing by methods that are easy to use and accurate. Timers
on disinfection equipment are prohibited. The addition of dry or liquid
disinfectant directly into a public or semi-public aquatic unit for
routine disinfection is prohibited. This prohibition does not prohibit
the use of liquid or dry disinfectants for shock treatment of a swimming
pool or spa.
[Ord. No. 07-110 §1, 8-14-2007]
A.
When
gaseous chlorine is used, the following additional features shall
be provided:
1.
The chlorinator, chlorine cylinders and associated chlorination equipment
shall be located in a separate well-ventilated enclosure at or above
ground level. The enclosure shall be reasonably gastight, non-combustible
and corrosion-resistant. The door of the enclosure shall open to the
outside and shall not open directly toward the swimming pool.
2.
If chlorination equipment is placed in a room, then an exhaust fan
or gravity ventilation system shall be provided. Mechanical exhausters
shall take suction six (6) inches or less above the floor and discharge
through corrosion-resistant louvers to a safe outside location. A
gravity ventilation system shall be designed and constructed to discharge
to the outside from floor level. Fresh air intakes shall be located
no closer than three (3) feet above the ventilation discharge. Chlorine
room exhausts shall be directed away from the swimming pool to an
area which is normally unoccupied. Chlorine room fans shall be capable
of completely changing the air in the room at least once per minute.
3.
Electrical switches to control lighting and ventilation in the chlorine
room shall be located on the outside of the enclosure and adjacent
to the door.
4.
Chlorine cylinders shall be kept in an upright position and securely
anchored to prevent them from falling. Chlorine cylinders may be stored
indoors or outside. If stored outside, chlorine cylinders shall not
be stored in direct sunlight. Chlorine cylinders shall not be stored
near an elevator, ventilation system or heat source.
5.
A warning sign shall be placed on the outside of the door to the
chlorine room, which cautions persons of the danger of chlorine gas
within the enclosure. The warning shall be in letters three (3) inches
high or larger. The door to the chlorine room shall be provided with
a shatter-resistant inspection window.
6.
Chlorinators shall be a solution-feed type, capable of delivering
chlorine at its maximum rate without releasing chlorine gas to the
atmosphere. Chlorinators shall be designed to prevent the backflow
of water into the chlorine solution container.
8.
A common chlorine gas disinfection system may be utilized in separate
swimming pools if separate metering and feeding devices are provided
for each swimming pool.
9.
The addition of gaseous disinfectant directly into a public or semi-public
swimming pool is prohibited. A chlorine gas disinfection system shall
not be used for the disinfection of water in a public or semi-public
spa.
[Ord. No. 07-110 §1, 8-14-2007]
Hypochlorite solutions shall be fed by an acceptable type of
hypochlorinator.
[Ord. No. 07-110 §1, 8-14-2007]
Granular, tablet, stick and other forms of dry disinfectant
shall be fed by an adjustable automatic feeding device.
[Ord. No. 07-110 §1, 8-14-2007]
Disinfection equipment and chemical feeders shall comply with
the requirements set forth in American National Standards Institute/NSF
International Standard 50 "Circulation System Components and Related
Materials for Swimming Pools, Spas/Hot Tubs", NSF International.
[Ord. No. 07-110 §1, 8-14-2007]
A.
Chemical
feeders, mixing tanks and other equipment may be required where the
continuous addition of certain chemicals is deemed by the department
to be necessary for the treatment and filtration process.
1.
An adjustable automatic chemical feeder shall be provided to ensure
the continuous disinfection of the water in a public or semi-public
aquatic center. Timers on disinfection equipment are prohibited. Disinfection
shall be accomplished by chlorination or by other methods that are
approved by the department. The method of disinfection shall effectively
maintain an adequate disinfectant residual in the water which is subject
to field testing by other methods that are easy to use and accurate.
a.
Chlorine disinfection equipment for a public or semi-public swimming
pool shall be designed to maintain a free chlorine residual of one
(1.0) PPM to five (5.0) PPM. Chlorine disinfection equipment for a
public or semi-public spa shall be designed to maintain a free chlorine
residual of two (2.0) PPM to ten (10.0) PPM.
b.
Bromine disinfection equipment for a public or semi-public swimming
pool shall be designed to maintain a bromine residual of two (2.0)
PPM to ten (10.0) PPM. Bromine disinfection equipment for a public
or semi-public spa shall be designed to maintain a bromine residual
of two (2.0) PPM to ten (10.0) PPM.
2.
The use of chlorinated isocyanurates or cyanuric acid stabilizer
for disinfection and stabilization is permitted. If used, chlorinated
isocyanurates shall be fed so as to maintain required disinfectant
residual levels. Cyanuric acid levels, whether from chlorinated isocyanurates
or from the separate addition of cyanuric acid stabilizer, shall not
exceed one hundred (100) PPM.
3.
The use of chloramines as a primary disinfectant of swimming pool
or spa water is prohibited.
4.
Metering and feeding devices should be provided for each swimming
pool.
5.
Disinfection equipment and chemical feeders shall comply with the
requirements set forth in American National Standards Institute/NSF
International Standard 50 "Circulation System Components and Related
Materials for Swimming Pools, Spas/Hot Tubs", NSF International, which
is incorporated by reference.
6.
If a chemical feeder is used, it shall be installed to inject solution
downstream from the filter and the heater. An erosion-type feeder
may be installed to feed solution to the suction side of the pump.
A chemical feeder shall be installed so it cannot operate unless the
filter pump is running.
