JOHNSON COUNTY
ENVIRONMENTAL SANITARY CODE
Construction and Remodeling Application
ADOPTED JANUARY 29, 2004
BY RESOLUTION 008-04
JOHNSON COUNTY ENVIRONMENTAL SANITARY CODE
CHAPTER III
SWIMMING POOLS
ARTICLE 1: GENERAL PROVISIONS
Section 1.
Purpose. The purpose of this chapter is to protect, promote, and preserve the
public health, safety and general welfare by providing for the establishment and
enforcement of minimum standards for safety, cleanliness, and general sanitation for all
swimming pools, spa pools, and public bathing places now in existence or hereafter
constructed or developed, and to provide for inspection and licensing of all such
facilities.
Section 2.
Definitions. Unless the context requires or specifies otherwise, the following
words, terms or phrases, as used in this Chapter, shall be given the meaning defined in
the Section.
- Bather Load: The maximum number of persons that may use the pool at one time
without creating undue health or safety hazards.
- Bath House: A structure which contains dressing rooms, showers, and toilet
facilities for use with an adjacent public pool, semi- public, spa pool, or public bathing
place.
- Department: The Johnson County Environmental Department or its authorized
representative.
- Director: The Director of the Johnson County Environmental Department or his/her
authorized representative.
- Inlet: An opening or fitting through which filtered water enters the pool.
- Licensed Operator: Any person schooled and certified in a training course in
swimming pool operation by the Johnson County Environmental Department or any equivalent
course approved by the director. Certification is valid for three years.
- Lifeguard: A person schooled and certified in a senior course of instruction in
life saving and water safety, equivalent to that offered by the American Red Cross.
- Main Drain: The outlet or outlets at the deep portion of the pool through which
the main flow of water leaves the pool.
- Overflow Gutter: A trough or gutter around the inside of the perimeter of the
pool walls with the overflow lip effecting a skimming action to clean the pool water
surface.
- Pool Deck: The unobstructed area around the outside of the pool curb, diving
boards, and/or pool slides.
- Pool Depth: The distance measured from the floor of the pool to either the
midpoint of the vertical dimension of the skimmer box or the lip of the overflow gutter.
- Public Pool: Any swimming or wading pool owned or operated by a city,
county, state, federal, or any other public agency or any other swimming or wading pool,
other than a private residential pool or semi-public pool, operated by any person as
defined herein, whether he be owner, lessee, operator, licensee, or concessionaire,
regardless of whether or not a fee is charged.
- Public Bathing Place: A body of water, natural or modified by man, for swimming,
diving, and recreational bathing, together with adjacent shoreline or land area,
buildings, equipment, and appurtenances pertaining thereto, used by consent of the owner
or owners and by being held out to the public by an individual, group, firm, corporation,
organization, governmental agency, municipality or political subdivision, irrespective of
whether a fee is charged for the use thereof. The bathing water areas of public bathing
places include, but are not limited to, lakes, ponds, rivers, streams, and artificial
impoundments.
- Recirculating System: The pump, piping, and appurtenances provided for conveying
swimming pool water to, through, and from the filter.
- Semi-public Pool: Any swimming and wading pool serving a private club, motel,
apartment building, or any cooperative type project of three or more living units, the use
of which is limited to members or residents and their guests.
- Skimmer: A mechanical device connected to the recirculation piping which is used
to skim the pool surface.
- Spa Pools: A pool, not used under medical supervision, that contains water of
elevated temperature and incorporates a water jet system, an aeration system, or a
combination of the two systems.
- Swimming Pool: A watertight basin, chamber, or tank containing an artificial
body of water for swimming, diving, or recreational bathing.
- Turnover: The time required to recirculate the volume of water the pool
contains through the filtration system and back to the pool.
- Wading Pools: Any constructed or prefabricated public pool two (2) feet or
less in depth which is designed to be used exclusively for wading purposes.
Section 3.
General Requirements. The monitoring and inspection of public or semi-public
swimming pools, spa pools, or public bathing places is considered by the Department to be
significant in prevention of disease, sanitary nuisances, and accidents by which the
health or life of an individual or individuals may be threatened or impaired.
No provision of this Code shall be deemed to require a construction change in any portion
of the facility regulated by this Code when such facility was installed and is maintained
in accordance with law in effect prior to the effective date of this Code, except when any
such construction regulated by this Code is determined by the Director to be in fact
dangerous, unsafe, unsanitary or a nuisance, and a menace to life, health or property.
Animals are prohibited in public or semi-public swimming pools, spa pools, or public
bathing places and on pool decks.
Any water discharged from any pool, or from any portion of the recirculation system, shall
be disposed of through a sanitary sewer system according to law.
Section 4.
Operating Permit. No person shall cause to be operated, managed, or maintained, a
public or semi-public swimming pool, spa pool, or public bathing place, unless the
facility holds a current valid operating permit from the Director. Operating permits are
not transferable.
Permit applications for public, semi-public pools, pool spas, or public bathing places
shall be submitted no later than April 1st of each year and shall be in effect for one (1)
year following the date of issuance. A pool or public bathing place permit fee shall be
paid to the Johnson County Environmental Department to help defray the cost of
administration and service.
The Director shall issue an operating permit for a public or semi-public swimming pool,
spa pool, or public bathing place which complies with the provisions of this Code.
Section 5.
Inspections, Operational Requirements and Violations. The Department is
authorized to conduct such inspections as it deems necessary to determine compliance with
all provisions of these rules and shall have the right to enter the pool or public bathing
place facilities at any reasonable hour for this purpose.
-
Equipment: All items of equipment designed for
recirculation, filtration, disinfection, and pool water treatment shall be in good repair at all times and shall be
properly maintained to perform the functions of the units and protect the swimming pool
water from contamination.
-
Water Quality: The pool water level shall be maintained at an elevation suitable
for continuous skimming flow into the surface overflow system without flooding during
quiescence. Chemical, bacteriological, and physical water quality in the pool shall meet
the minimum standards set forth by this Code.
-
Posted Closing: Any public or semi-public pool or spa pool can be immediately
posted closed by the Department as not being in compliance with this Code whenever any of
the following conditions occur:
-
The free active chlorine residual in the pool water is less than one (1) part per
million or the bromine residual is less than two (2) parts per million.
-
The pH of the pool water is below seven point two (7.2) or above eight point zero (8.0)
.
-
The clarity of the pool water is such that the main drain grate is not readily visible
from the pool deck or a black disc six (6) inches in diameter placed at the deepest point
is not clearly visible from the deck of the pool.
-
The recirculation system or the pool disinfection feeding equipment is missing or not
functioning.
-
Any other conditions exist which may endanger the health, safety, or welfare of the
persons using the pool.
ARTICLE 2. PLAN APPROVAL
Section 1.
Plan Requirement. No person shall construct, install, extend, alter, or
modify a public or semi- public swimming pool, spa pool, or public bathing place unless
the plans and specifications for such work have been submitted to and approved by the
Department.
Section 2.
Application. Application for approval of such plans and specifications
shall be made on forms to be provided by the Director and shall be accompanied by
duplicate sets of plans and specifications fully describing the proposed swimming pool or
extension or alteration.
Section 3.
Specifications. Plans shall be drawn to scale, be a minimum size of
eighteen (18) by twenty-four (24) inches and a maximum size of thirty-six (36) by
forty-two (42) inches, and be accompanied by all specifications to clearly illustrate what
is to be constructed. These plans shall include:
- Plan and sectional view dimensions of both the pool and the area enclosed by the
barrier fence, to include the bathhouse and the equipment room.
- Specifications and layout of all treatment equipment used.
- One piping schematic showing piping, pipe size, inlets, main drains, skimmer, gutter
outlets, vacuum fittings, and all other appurtenances connected to the pool piping system.
- Layout of the chemical storage room.
- Specifications for the water supply and wastewater disposal systems. This includes
aspects such as well location and backwash water disposal where applicable.
- Plans must bear the seal and signature of a licensed professional engineer or architect
registered to practice in Kansas. They shall certify that all building plan requirements
and standards have been met. They shall also certify that the licensed professional
engineer or architect has completed a final inspection.
Section 4.
Approval. The Director shall approve the plans and specifications only if they
comply with the standards of construction, design, and equipment as required by this Code.
The Director shall retain one (1) set of the plans and specifications and shall return the
other set to the applicant. Upon completion of construction, the contractor and/or owner
shall notify the Director for a final inspection. At or prior to the time of the final
inspection, the contractor shall furnish the Department and the owner with a complete set
of drawings, which show, as built, the location of all pipes and the connections of all
equipment.
Section 5.
Terms and Modifications. If construction is not commenced within one (1) year
from the date of approval, the approval shall be void. Any modifications of the plan
review requirements must be approved in writing by the Director.
ARTICLE 3. CONSTRUCTION SPECIFICATIONS
Section 1.
Materials. Swimming pools and all appurtenances thereto shall be constructed of
materials which are inert, nontoxic, impervious, permanent, and enduring; which can
withstand the design stresses; which will provide a tight tank with a smooth and easily
cleaned surface, or to which a smooth, easily cleaned surface finish can be applied.
Sand, clay, or earthen bottoms are not permitted in swimming pool construction.
Swimming pool finish, including bottoms and sides, must be of white or light colored
materials, with a smooth finished surface.
Section 2.
Depth Markings and Lines. Depth of water shall be plainly marked with numerals
or letters at least four (4) inches high on the vertical wall of the swimming pool; on the
edge of the deck or walk next to the swimming pool at maximum and minimum points; and at
the points of break between the deep and shallow portions. The depth in the diving areas
will be appropriately marked.
When provided, the lifeline shall be securely fastened to wall anchors. Wall anchors
shall be of corrosive-resistant materials and shall be recessed or have no projections
which constitute safety hazards when the lifeline is removed. It shall be marked with
visible floats at not greater than seven foot intervals. The line shall be of sufficient
size and strength to offer a good handhold and to support loads normally imposed by
bathers.
Section 3.
Inlets and Outlets. Inlets and outlets for all swimming pools regulated by this
Chapter shall be designed and constructed in accordance with this section.
- Outlets. All swimming pools shall be provided with an outlet at the deepest
point to permit the pool to be completely and easily emptied. Openings must be covered by
proper grating which is not readily removable by bathers. Pools shall not be operated with
broken, damaged, or missing drain covers. Outlet openings of the grating in the floor of
the pool shall be at least four (4) times the area of discharge pipe. The minimum width of
grate shall be one-half (1/2 ) inch, and the maximum not more than one (1) inch.
In swimming pools with deep water at or near one end, multiple outlets shall be
provided where the width of the pool is more than thirty (30) feet. In such cases,
outlets shall be spaced not more than thirty (30) feet apart, with the outermost outlets
not more than fifteen (15) feet from side walls.
- Drain devices. Devices used for draining swimming pools shall be sized to
prevent the surcharging of the sanitary sewer.
-
Inlets. Inlets for fresh and/or re-purified water shall be located to produce
uniform circulation of water and to facilitate the maintenance of a uniform disinfectant
residual throughout the entire swimming pool without existence of dead spots. Where water
from the public water system is added to the pool, cross-connections between the public
water system and the pool water shall be prohibited. Inlets shall be placed around the
pool perimeters so that ample recirculation of fresh water is assured.
Each inlet shall be designed to permit adjustment of water volume to obtain the best
circulation.
Section 4.
Floor Slope. The slopes at the bottom of any portion of the swimming pool having
a water depth of less than five (5) feet shall not be more than one (1) foot in ten (10)
feet and said slope shall be uniform. In portions with a depth of greater than five (5)
feet, the slope shall not exceed one (1) foot in three (3) feet.
Section 5.
Side Walls. Walls of a swimming pool shall be either (a) vertical for water
depths up to at least six (6) feet; or (b) vertical for a distance of at least three (3)
feet below the water level, below which the wall may be curved to the bottom with a radius
equal to the difference between the depth at that point and the depth at the vertical
sidewall, provided that the vertical is interrupted to permit slopes not greater than one
(1) foot horizontally for each five (5) feet of depth of sidewall eleven (11)
degrees from vertical.
Safety ledges, when provided on vertical walls in the deep portion of the swimming pool,
shall not be more than six (6) inches wide, shall be at least four (4) feet below the
water surface, and shall slope one-half (1/2) inch in six (6) inches toward the pool.
Section 6.
Overflow Gutters. Overflow gutters shall be required on all swimming pools
having a surface area of more than 1,600 square feet. Pools having a surface area of less
than 1,600 square feet shall be provided either with overflow gutters or skimmers.
- Gutters: Overflow gutters shall extend completely around the swimming
pool, except at steps or recessed ladders. The overflow gutter shall also serve as a
handhold. This gutter shall be capable of continuously removing 50% or
more of the recirculated water and returning it to the filter. All overflow gutters shall
be connected to the recirculation system through a properly designed surge tank. The
gutter, drains, and return piping to the surge tank shall be designed to rapidly remove
overflow water caused by recirculation displacement, wave action, or other causes produced
from the maximum pool bathing load. The opening into the gutter beneath the coping shall
be not less than three (3) inches wide with a depth of at least three (3) inches. Where
large gutters are used, they shall be designed to prevent entrance or entrapment of
bathers arms or legs. The overflow edge or lip shall be rounded and not thicker than two
and one half (2-1/2) inches for the top two (2) inches. The overflow outlets shall be
provided with outlet pipes which shall in any case be at least two (2) inches in diameter.
The outlet fittings shall have a clear opening in the grating at least equal to one and
one-half (1- 1/2) times the cross-sectional area of the outlet pipe.
- Skimmers: Skimmers are permitted on public swimming pools with not more than
1,600 square feet of water area, providing approved handholds are installed and sufficient
motion to the pool water is induced by the pressure return inlets. At least one skimming
device shall be provided for each 500 square feet of water surface area or fraction
thereof. Where two or more skimmers are required, they shall be so located as to minimize
interference with each other. The handholds must be no more than nine (9) inches above the
normal water line. Skimming devices shall be built into the pool wall and shall meet the
following general specifications:
(1) The skimmer weir shall be automatically adjustable and shall operate freely with
continuous action to variations in water level over a range of at least four (4) inches.
The weir shall operate at all flow variations.
(2) An easily removable and cleanable basket or screen through which all overflow water
must pass shall be provided to trap large solids.
(3) The skimmer shall be of sturdy, corrosion-resistant materials.
(4) The skimmer weir and basket shall be maintained in a clean and sanitary condition.
Section 7.
Depth. The minimum depth of water in the swimming pool shall be three (3) feet.
Section 8.
Ladders, Recessed Treads. and Stairs. Steps or ladders shall be provided at the
shallow end of the pool. Recessed steps or ladders shall be provided at the deep portion
of the swimming pool; and, if the pool is more than thirty (30) feet wide, such steps or
ladders shall be installed on each side.
- Steps: Steps leading into the swimming pool shall be of nonslip design, have
a minimum tread length of twenty-four (24) inches, a minimum tread width of twelve (12)
inches, a maximum rise or height of ten (10) inches.
- Ladders: Swimming pool ladders shall be corrosion-resistant and shall be
equipped with nonslip treads. All ladders shall be designed to provide a handhold and
shall be rigidly installed. There shall be a clearance of not more than five (5) inches
nor less than three (3) inches between any ladder and the pool wall. If steps are inserted
in the walls or if step-holes are provided, they shall be of such design that they may be
cleaned readily and shall be arranged to drain into the pool to prevent the accumulation
of dirt thereon. Stepholes shall have a minimum tread width of five (5) inches and a
minimum length of twelve (12) inches.
- Handrails: Where steps, stepholes, or ladders are provided within the
swimming pool, there shall be a handrail at the top of both sides thereof, extending over
the coping or edge of the deck.
- Diving Boards: Supports, platforms and steps for diving boards shall be of
substantial construction and of sufficient structural strength to safely carry the maximum
anticipated loads. Steps shall be of corrosion-resistant material, easily cleanable, and
of non-slip design. Handrails shall be provided at all steps and ladders leading to diving
boards more than one (1) meter above the water, except those set at fifteen (15) degrees
or more from the vertical. Platforms and diving boards which are over one (1) meter high
shall be protected with guard railings.
Section 9.
Decks and Walkways. A continuous deck at least five (5) feet (and preferably
eight [8] or more feet) wide shall extend completely around the swimming pool. The deck
shall be sloped away from the pool to drain at a grade of one-fourth (1/4) inch to
three-eighths (3/8) inch per lineal foot and shall have a non-slip surface. Deck drains
shall not be connected to the recirculation system.
Decks shall be maintained in a sanitary condition and free from litter. Carpeting, if
used, should not be installed within eight (8) feet of the pool and shall be wet vacuumed
frequently so as to keep it clean and free of accumulated moisture.
Section 10.
Enclosures. All outdoor swimming and wading pool areas shall be enclosed by a
protective wall, fence, or other effective barrier. The entire barrier shall be at least
five (5) feet in height.
Each entrance shall be equipped with a door or gate that is self-closing and self-latching
with hardware provided for padlocking.
ARTICLE 4. WATER QUALITY
Section 1.
Disinfectant Residual. Chlorine residual shall be maintained between one (1)
part per million and three (3) parts per million as free available chlorine.
Bromine residual shall be maintained between two (2) parts per million and five (5)
parts per million as free available bromine.
Section 2.
pH Control. The pH of the pool water shall be maintained in a range of seven
point two (7.2) to eight point zero (8.0). The Department may allow the maintenance of a
higher pH in conjunction with maintenance of a higher disinfectant residual in special
cases where corrosive water supplies dictate the need for such measures for protection of
equipment.
Section 3.
Turbidity. The pool water shall be sufficiently clear so that the main drain is
readily visible from the pool deck or a black disc six (6) inches in diameter placed at
the deepest point is clearly visible from the deck of the pool.
Section 4.
Bacteriological Quality.
When there is reason to believe that the pool water
poses a potential health hazard, water samples for bacteriological analysis shall be taken
to ascertain the sanitary quality of the pool water and to aid in proper control.
ARTICLE 5. RECIRCULATION SYSTEMS
Section 1.
General Requirements. A recirculation system, consisting of pumps, piping,
filters, water conditioning and disinfection equipment, and other accessory equipment,
shall be provided. This recirculation system must clarify and disinfect the swimming pool
volume of water in eight (8) hours or less, thus providing a minimum turnover of at least
three (3) times in twenty-four (24) hours, except that the recirculation rate shall be
increased to provide a six-(6) hour turnover for swimming pools subjected to heavy bather
loads as determined by the Department. The recirculation equipment shall be operated
continually except for periods of routine maintenance.
Section 2.
Pipes. Piping shall be of nontoxic material, resistant to corrosion, and able to
withstand operating pressures. Pipes shall be identified by a color code or tags.
Section 3.
Strainer. The recirculation system shall include a strainer to prevent hair,
lint, etc., from reaching the pump. Strainers shall be corrosion resistant with openings
not more than one-eighth (1/8) inch in size providing a free flow area of at least four
(4) times the area of pump suction line and shall be readily accessible for frequent
cleaning. Strainers shall be maintained in a clean and sanitary condition at all times.
Section 4.
Cleaning Systems. A vacuum cleaning system shall be provided. Vacuum fittings
shall be mounted approximately twelve (12) inches below the lip of the gutter, flush with
the pool walls, and shall be provided with plugs or covers which shall be in place at all
times when the pool is not being vacuumed.
Section 5.
Flow Indicating. A rate of flow indicator, reading in gallons per minute, shall
be installed and located so that the rate of recirculation and backwash will be indicated.
The indicator shall be capable of measuring flows from a few gallons per minute up to at
least one and one half (1-1/2) times the design flow rate.
Section 6.
Pumps. Pumps shall be of adequate capacity to provide the required number of
turnovers of swimming pool, spa pool, or wading pool water as specified in Section 5(1),
Section 19(1), and Section 8(3) of this Chapter. The pump or pumps shall be capable of
providing the flow adequate for the backwashing of filters.
Section 7.
Heater. Pools equipped with heaters shall have a fixed thermometer mounted in
the pool recirculation line downstream from the heater outlet. Thermometers mounted on
heater outlets do not meet this requirement.
ARTICLE 6. FILTERS
Section 1.
Rapid Sand Type Filters. Rapid sand filters shall meet the specifications
prescribed in this section.
- Design Rate: Rapid sand filters shall be designed for a filter rate not to
exceed three (3) gallons per minute per square foot of bed area meeting the design rate of
flow required by the prescribed turnover.
- Pressure Gauges: The filter system shall be provided with influent and effluent
pressure gauges to indicate the condition of the filters. Also, air-relief valves shall be
provided at or near the high point of the filter or piping system.
- Piping: The filter system shall be designed with necessary valves and piping
which permit the following requirements:
(1) The system shall have filtering to the swimming pool.
(2) The system shall have individual backwashing of filters to waste at a rate of not less
than fifteen (15) gallons per minute per square foot of filter area.
(3) The system shall be able to be throttled to ensure that the backwash rate is not
greatly exceeded.
(4) Rapid sand filters' backwash water must discharge to the sanitary sewer.
(5) Isolation of individual filters for repairs while other units are in service shall be
required.
(6) The system shall be capable of complete drainage of all parts of the system.
(7) Necessary maintenance, operation and inspection shall be provided in a convenient
manner.
- Access: Each pressure type filter tank shall be provided with an access
opening of not less than a standard eleven (11)-inch by fifteen (15)-inch manhole and
cover.
- Materials: On pressure type filters, the tank and its integral parts shall be
constructed of substantial material capable of withstanding continuous anticipated usage.
Section 2.
Hi-rate Sand Type Filters. Hi-rate sand type filters shall meet the
specifications prescribed in this Section.
- Rate: Hi-rate sand filters shall be designed for a filter rate not to exceed
fifteen (15) gallons per minute per square foot of bed area with sufficient area to meet
the design rate of flow required by the prescribed turnover.
- Installation: The filter tank and all components shall be installed in
compliance with the manufacturers' recommendations.
- Relief Valve: An air-relief valve shall be provided at or near the high point
of the filter or piping system.
- Pressure Gauges: The filter system shall be provided with influent and effluent
pressure gauges as are required to indicate the condition of the filter.
- Backwash: The filter system shall have individual backwashing of filters to
waste at a rate of not less than fifteen (15) gallons per minute per square foot of
surface area.
- Piping: The pumping and piping arrangement shall be able to be throttled to
ensure that the backwash rate is not greatly exceeded.
- Discharge: Hi-rate sand filter backwash water must discharge to the sanitary
sewer.
Section 3.
Diatomaceous Earth Type Filters. All diatomaceous earth type filters, whether of
the vacuum or pressure type, shall meet the design pump capacity as required by Article 5,
Section 1, of this Chapter and the specifications prescribed in this Section.
- Design Rate: The design rate of filtration shall not be greater than two (2)
gallons per minute per square foot of effective filtering surface without continuous feed,
and not greater than two and one half (2 1/2) gallons per minute per square foot with
continuous feed.
- Filter Area: Filtering area, where fabric is used, shall be determined on the
basis of effective filtering surface, with no allowances for areas of impaired filtration,
such as broad supports, folds, or portions which may bridge.
- Materials: The filter and all component parts shall be of such materials,
design, and construction as to withstand normal continuous use without significant
deformation, deterioration, corrosion, or wear which could adversely affect filter
operations.
- Pre-coating: A suitable pre-coating device, equipped with a water supply
delivered through an approved air gap, shall be provided, and the filter shall be so
designed and constructed, or provision made, to preclude the introduction of appreciable
quantities of filter-aid into the pool during pre-coating operations.
- Tank: The tank containing the filter elements shall be constructed of steel,
plastic or other suitable material, which will satisfactorily provide resistance to
corrosion, with or without coating. The septa, or elements which support the filter- aid,
shall be of corrosion-resistant material. The septa shall be constructed to be resistant
to rupture under conditions of the maximum differential pressure between influent and
effluent which can be developed by the circulating pump and of adequate strength to resist
any additional stresses developed by the cleaning operation.
- Maintenance: The filters shall be designed in such a manner that they may be
easily disassembled, with allowances made for adequate working space above and around the
filter to allow the removal and replacement of any part and to allow for proper
maintenance.
- Gauges: The filter system shall be provided with such pressure, vacuum, or
compound gauges as are required to indicate the condition of the filter. In vacuum-type
filter installations where the circulating pump is two (2) horsepower or higher, an
adjustable high vacuum automatic shut-off shall be provided to prevent damage to the pump.
Also, air-relief valves shall be provided at or near the high point of the piping
system.
- Cleaning: All filters shall be easily cleanable, and provision shall be made
for completely and rapidly draining the filter.
- Discharge: Diatomaceous earth filter backwash water must discharge to the
sanitary sewer system through a separation tank.. The separation tank must have a visible
precautionary statement warning the user not to start up the filter pump without first
opening the air release.
- Monitoring: All types of filters must have a visible means of observing the
discharge backwash water in order to determine if the filter cells are relatively clean.
ARTICLE 7. DISINFECTANT AND CHEMICAL FEEDERS
Section 1.
General Requirements. The swimming pool shall be equipped with a chlorinator,
hypochlorinator, brominator, or other disinfectant feeder or feeders which meet the
following requirements:
(1) The feeder shall be of sturdy construction and materials which will withstand wear,
corrosion, or attack by disinfectant solutions.
(2) The feeder shall be capable of supplying a sufficient amount of chlorine or bromine
for adequate disinfection as required by Section 4(1) of this Chapter.
(3) The feeder shall have a graduated and clearly marked dosage adjustment to provide
adequate disinfectant flow.
(4) When the disinfectant is introduced at the suction side of the pump, a device or
method shall be provided to prevent air lock of the pump or recirculation system.
Section 2.
Chlorine Gas. When compressed chlorine gas is used, the following additional
features shall be provided:
(1) The chlorine and chlorinating equipment shall be in a separate, enclosed
well-ventilated area. Such area shall not be below ground level; and when tightly enclosed
in a room, it shall be provided with vents near the floor which terminate at a suitable
location out-of- doors and shall be so located as not to contaminate air inlets to any
buildings or areas used by people.
(2) Forced air ventilation shall be provided which will give one complete air change per
minute.
(3) The chlorinator equipment shall be of rugged design, capable of withstanding wear
without developing leaks.
(4) Chlorine cylinders shall be anchored to prevent their falling over. A valve stem
wrench shall be maintained on the chlorine cylinder so the supply can be shut off quickly
in case of an emergency. Valve protection hoods shall be kept in place except when the
cylinder is connected.
(5) The chlorine feeding device shall be designed so that, during accidents or
interruptions of the water supply, leaking chlorine gas will be conducted to the
out-of-doors.
(6) The chlorinator shall be a solution feed, capable of delivering chlorine at its
maximum rate without releasing chlorine gas to the atmosphere.
(7) The chlorinator shall be designed to prevent the backflow of water into the chlorine
solution container.
(8) A bottle of concentrated ammonium hydroxide (approximately 28 to 30 percent) shall be
available for chlorine leak detection.
(9) A gas mask or self-contained breathing apparatus, approved for use in chlorine gas
contaminated air, shall be provided and shall be located out of the area of possible
contamination.
(10) Installation of chlorinator equipment, and the operation thereof, shall be carried
out under the supervision of personnel experienced with installation and operation of such
equipment.
(11) The Johnson County Environmental Department shall be notified immediately of any
escape of chlorine gas.
Section 3.
Other Method. Bactericidal agents, other than chlorine, and their feeding
apparatus shall be acceptable if approved by the Director.
Hypochlorinators or other adjustable output rate chemical feeding equipment shall be
capable of permanently and precisely feeding the required quantity of disinfecting agent
to the pool water.
Equipment and piping used to apply other chemicals to the water shall be of such size,
design, and material that they may be cleaned and will be free from clogging. All material
used for such equipment and piping shall be resistant to the action of chemicals to be
used therein.
ARTICLE 8. WATER QUALITY TESTING EQUIPMENT FOR PUBLIC AND SEMI-PUBLIC
SWIMMING POOLS
Section 1.
Disinfectant. A disinfectant residual testing device shall be provided at each
public swimming pool. Where chlorine is used as a disinfectant, an indicator capable of
measuring residual chlorine in the pool water shall be graded between zero point one (0.1)
parts per million and three point zero (3.0) parts per million. Where bromine is used as a
disinfectant, an indicator capable of measuring residual bromine in the pool shall be
graded between one point zero (1.0) parts per million and three point zero (3.0) parts per
million.
Section 2.
pH Measurement. A testing device for measuring the pH of pool water shall be
provided at each public pool. The device shall have a minimum range from six point eight
(6.8) to eight point four (8.4).
ARTICLE 9. EQUIPMENT AREAS
Section 1.
Sheltering. Chlorinators, brominators, filters, pumps, and other electrical
equipment shall be sheltered in a weather-proof enclosure.
Section 2.
Drainage. Drainage in and around the enclosure shall be such as to preclude the
possibility of water entering or accumulating on any interior surface of the enclosure.
Section 3.
Access. A permanent means of access will be provided to all equipment areas.
There will be adequate clearance between the walls, ceilings, and floor, and each piece of
equipment, to allow for inspection, maintenance, and repair operations. The entrance to
the equipment enclosure shall be kept locked.
Section 4.
Ventilation. Natural or forced ventilation is recommended.
ARTICLE 10. DIVING AREAS
Section 1.
Dimensions. The dimensions of the swimming pool in the diving area shall conform
to the following table:
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