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85 Cards in this Set
- Front
- Back
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Studies indicate that swimmers have a higher overall illness rate over non-swimmers: |
A. regardless of bathing water quality
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The treatment system of a pool is typically recommended to be installed in which of the following flow arrangements?
A. Skimmer or gutter line, main drain line, adjustment valves, disinfectant feeder, hair strainer, pump, filter, pH feeder pump, adjustable inlets B. Skimmer or gutter line, main drain line, adjustment valves, hair strainer, pump, filter, pH feeder pump, adjustable inlets C. Skimmer or gutter line, main drain line, adjustment valves, pH feeder pump, hair strainer, pump filter, disinfectant feeder, adjustable inlets D. Skimmer or gutter line, main drain line, adjustment valves, hair stainer, disinfectant feeder, filter aid, pH feeder, pump, filters, adjustable inlets |
D. Skimmer or gutter line, main drain line, adjustment valves, hair stainer, disinfectant feeder, filter aid, pH feeder, pump, filters, adjustable inlets
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Swimming pool water clarity is measured in terms of NTU or Nephelometer Turbitity Units. It is recommended that a level of .5 NTU:
A. shall be maintained B. shall not be exceeded C. is the minimum level D. is the maximum level |
B. shall not be exceeded
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A swimming pool filtration system should filter the entire volume of water at a minimum of every:
A. 2 hours B. 6 hours C. 10 hours D. 13 hours |
B. 6 hours
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The rate of filtration for a vacuum diatomite filter should be:
A. 1 to 2 gpm/sq ft B. 3 to 4 gpm/sq ft C. 5 to 6 gpm/sq ft D. 7 to 8 gpm/sq ft |
A. 1-2 gpm/ft2
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Chemicals that have been used for pool disinfection include chlorine, chloro-iso-cyanurates, bromine and:
A. ammonia B. soda asn C. sodium thiosulfate D. iodine |
D. iodine
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Due to the large quantity of floating organisms and materials, the gutters or skimmers should receive what Minimum percent of the total pool water?
A. 95% B. 45% C. 60% D. 30% |
C. 60%
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The recommended and most effective method of maintaining pool water quality is:
A. super-chlorination B. intermittent circulation, chlorination, and filtration C. continuous recirculation, chlorination, and filtration D. chlorination - dechlorination |
C. continuous recirculation, chlorination, and filtration
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One advantage of using cyanuric acid additive is that it:
A. allows easier measurement of chlorine B. prevents pH deterioration C. stabilizes residual chlorine D. requires less soda ash as an additive to the pool |
C. stabilizes residual chlorine
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The acidity-alkalinity balance affects eye irritation, water coagulation and the:
A. effectiveness of chlorine B. ambient water temperature C. effectiveness of the skimmers D. evaporation rate |
A. effectiveness of chlorine
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The addition of sodium bicarbonate will:
A. raise the ambient water temperature B. lower the ambient water temperature C. raise the pH D. lower the pH |
C. raise the pH
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To raise the pH add:
A. chlorine B. muriatic acid C. soda ash D. sulfuric acid |
C. soda ash
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To mix acid and water, always:
A. add water to acid B. add acid to water C. add soda ash to acid D. stir while pouring water into the acid |
B. add acid to water
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When chlorine is added to water:
A. one acid is formed B. two primary acids are formed C. HCl is considered the primary product D. ozone is produced in large quantities |
A. one acid is formed
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The best control of swimmer's itch at a bathing beach is to:
A. add copper sulfate B. increase the chlorine residual C. lower the chlorine residual D. lower water level and allow plants to dry out |
A. add copper sulfate
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The preferred method for controlling sewage from watercraft is the use of
a. on-board holding tanks b. overboard discharge c. incinerator toilet d. compost toilet |
a.On-board holding tanks
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Gas chlorine provides:
A. 50% available chlorine B. 75% available chlorine C. 92% available chlorine D. 100% available chlorine |
D. 100% available chlorine
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The microbe primarly responsible for skin infections in whirlpools is:
A. Escherichia coli B. Pseudomonas aeruginosa C. Shigella sonnet D. Salmonella typhimurium |
B. Pseudomonas aeruginosa
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Water in childrens wading pools should be completely recirculated every (minimum standard):
A. 60 minutes B. 90 minutes C. 120 minutes D. 180 minutes |
A. 60 minutes
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The ideal pH range for swimming pools is:
A. 6.0 to 8.5 B. 6.5 to 8.5 C. 7.2 to 7.6 D. 5.0 to 7.0 |
C. 7.2 to 7.6
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The generally prohibited swimming facility from a public health perspective is a:
A. home outdoor pool B. fill and draw pool C. natural flow-through pool D. recirculating pool |
B. fill and draw pool
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It is essential that all public pools:
A. require footbaths B. require pre-showering of patrons C. run the recirculation and disinfection equipment 24 hours per day D. shovel in at least 4 pounds of calcium hypochlorite per 10,,000 gallon per 4-hour period |
C. run the recirculation and disinfection equipment 24 hours per day
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The formula: Volume of pool (gal) / [Pump Flow Rate (gpm) X 60 (min/hr)] = Turnover Rate will tell the:
A. Number of hours it takes for the entire contents of the pool to pass through the filters B. efficiency rate of the pumps C. gallons per minute flow rate D. chlorine demand per day |
A. Number of hours it takes for the entire contents of the pool to pass through the filters
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The main drain should have a grate that is how much larger than the area of the discharge pipe to prevent dangerous suction effects (absolute minimum)?
A. Four times B. Five times C. Six times D. Seven times |
A. Four times
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Improper use of chemicals or improperly balanced pool or beach water may cause the spread of infectious disease due to
a. removal of protective coatings of mucous on tissue b. irritation of skin c. living organisms in the water d. all of the above |
d. all of the above
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Some studies indicate that swimmers have a higher over-all illness rate than do non-swimmers
a. regardless of bathing water quality b. due to poor regulatory practice c. if they are over 50 years of age d. if they swim in pools |
a. regardless of bathing water quality
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Swimming pools receive fecal waste, urine, dead tissue, saliva, mucous from the nose, sweat, and pollution and contaminates from the surrounding environment. This emphasizes the importance of proper swimming pool design including
a. recirculation b. filtration and proper disinfection c. proper operation d. all of the above |
d. all of the above
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The treatment system of a pool should be installed in which of the following flow arrangements
a. skimmer or gutter line, main drain line, adjustment valves, disinfectant feeder, hair strainer, pump, filter, pH feeder pump, adjustable inlets b. skimmer or gutter line, main drain line, adjustment valves, hair strainer, pump, filter, pH feeder pump, adjustable inlets c. skimmer or gutter line, main drain line, adjustment valves, pH feeder pump, hair strainer, pump, filter, disinfectant feeder, adjustable inlets d. skimmer or gutter line, main drain line, adjustment valves, hair strainer, disinfectant feeder, filter aid and pH feeder, pump, filters, adjustable inlets |
d. skimmer or gutter line, main drain line, adjustment valves, hair strainer, disinfectant feeder, filter aid and pH feeder, pump, filters, adjustable inlets |
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Swimming pool water clarity is measured in terms of |
d. both A and B |
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A pool filtration system should filter the entire volume of water every
a. 2 to 3 hours b. 6 to 8 hours c. 10 to 12 hours d. 12 to 24 hours |
b. 6 to 8 hours
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The rate of filtration should be __________ for a diatomite filter.
a. 15 to 20 gpm/square ft, b. 3 to 5 gpm/square ft c. 1 to 2 gpm/square ft d. 3 gpm/square ft |
c. 1 to 2 gpm/square ft
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Chemicals that have been used for pool disinfection include chlorine, chloro-iso-cvanurates, bromine, and
a. ammonia b. soda ash c. sodium thiosulfate d. iodine |
d. iodine
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The gutters or skimmers receive a minimum of __________ of the total pool water due to the large quantity of organisms and materials which typically float.
a. 95 percent b. 45 percent c. 60 percent d. 30 percent |
c. 60 percent
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The recommended and most effective method of maintaining pool water quality is
a. super-chlorination b. intermittent circulation, chlorination, and filtration c. continuous recirculation, chlorination, and filtration d. chlorination – dechlorination |
c. continuous recirculation, chlorination, and filtration
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A pH between __________ and __________ is optimal PH control for eye irritation, but is not optimal for chlorine effectiveness.
a. 7.5 - 7.6 b. 7.0 – 7.1 c. 7.2 - 7.3 d. 7.9 - 8.0 |
a. 7.5 - 7.6
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One advantage of using cyanuric acid additive is that it
a. allows easier measurement of chlorine b. prevents pH deterioration c. stabilizes residual chlorine d. requires less soda ash as an additive to the pool |
c. stabilizes residual chlorine
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The acidity-alkalinity balance affects eye irritation, water coagulation, and the
a. effectiveness of chlorine b. ambient water temperature c. effectiveness of the skimmers d. evaporation rate |
a. effectiveness of chlorine
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The addition of sodium bicarbonate is usually used to
a. raise the ambient water temperature b. lower the ambient water temperature c. raise the alkalinity d. lower the pH |
c. raise the alkalinity
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To raise the pH, add
a. chlorine b. muriatic acid c. soda ash d. sulfuric acid |
c. soda ash
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A chemical commonly used to improve water clarity is
a. alum b. muriatic acid c. hydrogen chloride d. sodium carbonate |
a. alum
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The best control of swimmer's itch at a bathing beach is to
a. add copper sulfate b. increase the chlorine residual c. lower the chlorine residual d. lower water level and allow plants to dry out |
a. add copper sulfate
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"Swimmers itch" is also known as
a. gastroenteritis b. trichinosis c. schistosomiasis d. leptospirosis |
c. schistosomiasis
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The increase of dissolved solids due to evaporation in whirlpools, hot tubs and spas is often indicated by
a. increased water temperature b. condensation c. cloudy water d. foamy water |
c. cloudy water
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The microbe primarily responsible for skin infections in whirlpools
a. escherichia coli b. pseudomonas aeruginosa c. shigella sonnei d. salmonella typhimurium |
b. pseudomonas aeruginosa
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Water in wading pools should be completely recirculated every
a. 60 minutes b. 90 minutes c. 6 hours d. 24 hours |
a. 60 minutes
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An operating free chlorine residual of __________ is usually required in practice.
a. 0.2 PPM b. 1.0 to 3.0 mg/l c. 0.4 to 0.8 mg/l d. 2 to 5 ppm |
b. 1.0 to 3.0 mg/l
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The ideal pH range for swimming pools is
a. 6.0 to 8.5 b. 6.5 to 8.5 c. 7.2 to 7.6 d. 5.0 to 7.0 |
c. 7.2 to 7.6
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Swimming pools have been implicated in many outbreaks of disease, including
a. rabies b. AIDS c. taeniasis d. leptospirosis |
d. leptospirosis
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The generally prohibited swimming facility from a public health perspective is a
a. home outdoor pool b. fill and draw pool c. natural flow-through pool d. recirculating pool |
b. fill and draw pool
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It is essential that all public pools
a. require footbaths b. require pre-showering of patrons c. run the recirculation and disinfection equipment 24 hours per day d. shovel in at least 4 lbs of calcium hypochlorite per 10,000 gallon per 4-hour period |
c. run the recirculation and disinfection equipment 24 hours per day
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The water depth should clearly be marked on the pool perimeter for every __________ of depth change
a. 6 foot b. 5 foot c. 2 foot d. 1 foot |
c. 2 foot
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It has been found that pools less than 30 feet wide with a surface area less 1600 square ft
a. may utilize skimmers instead of gutters b. may utilize gutters rather than skimmers c. are not required to have disinfectant feeders d. do not have to use continuous equipment operation |
a. may utilize skimmers instead of gutters
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The pool must be designed
a. to fit the expected numbers of swimmers b. with oversized filters to meet unexpected peak demands c. with oversized pumps to meet peak demands d. with a variety of filter types to provide filtering options for the operator |
a. to fit the expected numbers of swimmers
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Approved public swimming pools should have
a. a pump that will recirculate the contents of the pool every 6 hours b. a filter that is designed for the output of the recirculation pump c. a disinfection system capable of dosing an outdoor pool at 10 mg/l d. all of the above |
d. all of the above
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The fresh water supply line to the pool must
a. have a direct solid connection to the public water line b. fill to the pool through an approved air gap c. have an approved pump hooked to the public water supply line to suck the water to the pool for fast fills d. none of the above |
b. fill to the pool through an approved air gap
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In large pools with outlets more than 5 feet from the end wall, pool inlets should be located
a. every 30 feet b. every 10 feet c. every 20 feet d. every 5 feet |
c. every 20 feet
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Pool inlets should be located a minimum of 10 inches to 15 inches below the water line to
a. ensure good mixing b. prevent clogging c. prevent loss of disinfectant d. ensure mixing of pH additives poured into pool |
c. prevent loss of disinfectant
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The main drain should have a grate that is __________ the area of the discharge pipe to prevent dangerous suction effects.
a. four times b. five times c. six times d. two times |
a. four times
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The connection between the pool drain and the sanitary sewer must
a. be solid copper no less than three inch in diameter b. be solid cast iron or NSF approved PVC c. have a properly located cleanout d. be provided with an air gap no less that 2 pipe diameters of the discharge pipe |
d. be provided with an air gap no less that 2 pipe diameters of the discharge pipe
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The backwash rate for both conventional, rapid, and high rate sand filters is
a. 5 gpm/square ft b. 10 gpm/square ft c. 15 gpm/square ft d. 50 gpm/square ft |
c. 15 gpm/square ft
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The minimum recommended depth of water under a 1 meter board (1 meter high) is
a. 8 feet b. 9 feet c. 10 feet d. 11 feet |
c. 10 feet
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One of the ways to recognize a well designed and properly operated pool is when you find the water at the time of inspection to be
a. crystal clear, with the proper level of approved disinfectant, and a pH level of 7.4 b. crystal clear, with the proper level of approved disinfectant, and a pH level of 8.4 c. crystal clear, with the proper level of approved disinfectant, and a pH level of 6.5 d. crystal clear, with the proper level of approved disinfectant, and a pH level of 7.0 |
a. crystal clear, with the proper level of approved disinfectant, and a pH level of 7.4
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The formula: Volume of Pool/(Pump Flow Rate (GPM) x 60 min) = Turnover Rate, will tell us
a. the number of hours it takes for the entire contents of the pool to pass through the filters b. the efficiency rate of the pumps c. the gallons per minute flow rate d. the chlorine demand per day |
a. the number of hours it takes for the entire contents of the pool to pass through the filters
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When chlorine is added to water
a. one acid is formed b. two acids are formed c. HCl is considered the primary product d. ozone is produced in large quantities |
a. one acid is formed
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The molecular state of hypochlorous acid is the desired product from chlorination of pool waters. This product
a. is increased with an upward movement of pH b. is decreased with a lower pH c. is ionized with a pH decrease d. is 62 percent molecular at a pH of 7.2 |
d. is 62 percent molecular at a pH of 7.2
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A pH __________ is probably optimal for minimal eye irritation along with maintenance of effective residual chlorine.
a. above 7.8 b. below 7.2 c. 7.5 to 7.6 d. none of the above |
c. 7.5 to 7.6
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Gas chlorine is considered
a. 50 percent available chlorine b. 75 percent available chlorine c. 100 percent available chlorine d. 92 percent available chlorine |
c. 100 percent available chlorine
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A vehicle built on a chassis and having a body of not more than 8 feet wide and 32 feet long designed for travel, recreation, and vacation use is
a. travel trailer b. all-terrain vehicle c. mobile home d. none of the above |
a. travel trailer
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Many of the problems associated with migrant labor camps are related to
a. infectious and parasitic diseases b. economic exploitation c. poor housing, facilities, and basic sanitation d. all of the above |
d. all of the above
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One study of basic sanitation and migrant farm workers found that migrants who did not have access to water and sanitation facilities in the field had a clinic utilization rate for diarrhea
a. 10 times that of rural poor b. 20 times that of urban poor c. 15 times that of urban poor d. 20 times that of rural poor |
b. 20 times that of urban poor
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The assemblage of large numbers of people in a limited area requires that certain minimum facilities be provided. Some guidelines to assist in the preparation for mass gatherings include
a. a plan showing area of site and location in relation to towns within 20 miles b. refuse storage and disposal c. noise control d. all of the above |
d. all of the above
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When chlorine is added to water a. chlorine gas is formed b. HOCl is considered the primary product c. HCl is considered the primary product d. ozone is produced in large quantities |
b. HOCl is considered the primary product |
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The bottom of multiple-use pools should have a bottom slope not greater than ____ when the depth is less than 5.5 feet. a. 3 inch per 12 inch b. 5 inche per 12 inch c. 1 inch per 12 inch d. 2 inch per 12 inch |
c. 1 inch per 12 inch |
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Which of the following would not be as likely to be contracted bathing at a beach? a. leptospirosis b. middle ear infection c. spinal meningitis d. all of above |
c. spinal meningitis |
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What public health factor is of primary importance in determining the sanitary quality of recreational waters? a. heavy metals b. coliforms c. human waste d. solid waste |
b. coliforms |
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The causative agent Naegleria fowleri has been linked to which of the following diseases? a. bacterial meningitis b. primary amoebic meningoencephalitis c. cholera d. diptheria |
b. primary amoebic meningoencephalitis |
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Which organism would probably survive in a hot tub? a. E. coli b. Vibrio cholera c. Entamoeba histolytica d. Pseudomonas aeruginosa |
d. Pseudomonas aeruginosa |
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A seechi disk is used to determine: a. pH b. clarity in recreational waters c. coliform contamination d. heavy metals
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b. clarity in recreational waters |
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A chemical used to adjust pool alkalinity is: a. chlorine b. calcium chloride c. sodium bicarbonate d. copper sulfate |
c. sodium bicarbonate |
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Which pH could cause the least eye irritation? A. 7 B. 7.6 C. 8.2 D. 6.8 |
b. 7.6 |
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The factor used to determine the bromine residual with the chlorine test kit (DPD): a. multiply chlorine residual by 2.25 b. multiply chlorine residual by 4 c. divided chlorine residual by 4 d. divided chlorine residual by 2.5 |
a. multiply chlorine residual by 2.25 |
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Which raises the pH of pool water? a. chlorine b. alum c. sodium carbonate d. all |
c. sodium carbonate |
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What compound is the principal scale former? a. calcium carbonate b. potassium carbonate c. magnesium sulfate d. sodium carbonate |
a. calcium carbonate |
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The preferred treatment for algae control is: a.copper sulfate b. superchlorination c. quaternary ammonium d. drain and scrub pool |
b. superchlorination |
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The best method to eliminate swimmers itch is: a. apply antibiotics to the water b. break the life chain of the schistosome c. raise the pH to destroy the snails d. destroy all aquatic vegetation so the cercariae can't mature |
b. break the life chain of the schistosome |
