Swimming Pool Operator Certification: Q&A Study Guide, Exams of Public Health

This Q&A guide is for swimming pool operators seeking certification. It covers pool sanitation, fecal accident protocols, chlorine/pH management, and chemical balance. Key topics include water chemistry, disinfection, and pool maintenance calculations for safe swimming environments. It addresses algae control and water balance, providing operators with information to manage pool water effectively. This resource prepares operators for certification, offering answers to questions about pool maintenance and safety. It serves as a study aid, helping operators apply best practices in pool management and maintain safe, sanitary swimming conditions.

Typology: Exams

2024/2025

Available from 08/06/2025

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Swimming Pool Operator
Certification: Q/A
First step of fecal accident procedure Correct Ans -
Direct all bathers to leave the pool. All affected waters must be
closed to swimming until proper procedures for contamination
have been completed
Second step of fecal accident procedure Correct Ans -
Manually remove as much of the material as possible using a net
or scoop and dispose of it in a sanitary manner. Clean and
disinfect the scoop or net. After cleaning leave the net or scoop
immersed in the pool during this infection. Vacuuming the stool
is not allowed.
Establish a fecal accident log documenting....? Correct Ans
- (1) the date and time of the event
(2) if the accident is a result of a form stools or diarrhea
(3) The free available chlorine concentration at the time or
observation of the event and before opening the public pool
(4) The pH
(5) The procedures followed to respond to the fecal accident
including the process used to increase free chlorine residual if
necessary
(6) The contact time
Procedures for form stool that is solid and not liquid Correct
Ans - Raise the free available chlorine level to 2 ppm and
ensure that the pH is between 7.2 and 7.5
Maintain the chlorine concentration for at least 25 minutes.
Ensure this concentration is found throughout all waters by
sampling at least three widely spaced locations away from return
outlets
Procedures for diarrhea liquid or non-form stools Correct
Ans - Raise the free available chlorine level two 20 ppm and
ensure that the pH is between 7.2 and 7.5
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Swimming Pool Operator

Certification: Q/A

First step of fecal accident procedure Correct Ans - Direct all bathers to leave the pool. All affected waters must be closed to swimming until proper procedures for contamination have been completed Second step of fecal accident procedure Correct Ans - Manually remove as much of the material as possible using a net or scoop and dispose of it in a sanitary manner. Clean and disinfect the scoop or net. After cleaning leave the net or scoop immersed in the pool during this infection. Vacuuming the stool is not allowed. Establish a fecal accident log documenting....? Correct Ans

  • (1) the date and time of the event (2) if the accident is a result of a form stools or diarrhea (3) The free available chlorine concentration at the time or observation of the event and before opening the public pool (4) The pH (5) The procedures followed to respond to the fecal accident including the process used to increase free chlorine residual if necessary (6) The contact time Procedures for form stool that is solid and not liquid Correct Ans - Raise the free available chlorine level to 2 ppm and ensure that the pH is between 7.2 and 7. Maintain the chlorine concentration for at least 25 minutes. Ensure this concentration is found throughout all waters by sampling at least three widely spaced locations away from return outlets Procedures for diarrhea liquid or non-form stools Correct Ans - Raise the free available chlorine level two 20 ppm and ensure that the pH is between 7.2 and 7.

Maintain the chlorine concentration and pH for eight hours while ensuring that the filtration system is operating. Backwash the filter thoroughly discharging the effluent directly to waste. Where appropriate replace the filter media Bathers may be allowed into pool after chlorine concentration has been returned to normal operating ranges Acid demand Correct Ans - The amount of acid required to reduce pH and alkalinity to the correct range Algae Correct Ans - Microscopic plant like organisms that grow in water do to warm temperatures and in adequate sanitizer. Algae can be green blue green black or yellow green (mustard). Alkalinity Correct Ans - A measure of the ability of pool water to resist changes in pH. Buffering capacity of water. Balanced water Correct Ans - The correct ratio of hardness, alkalinity, temperature, dissolved solids, and pH that prevent pool water from being either corrosive or scale forming Bromine Correct Ans - A chemical element that exists as a liquid in its elemental form or as part of a chemical compound that is an oxidant and a biocidal agent used to disinfect pool, spa and hot tub water. Bromamine Correct Ans - Bromine-ammonia compounds formed when the bromine in the water combines with ammonia, nitrogen or swimmer or bather waste. Unlike Chloramines they do not smell or irritate the body. They are active sanitizers. Calcium hardness Correct Ans - The amount of dissolved calcium in the pool. High levels promote scale and cloudy water. Low levels promote corrosion of the pool or spa equipment. Cavitation Correct Ans - Formation of partial vacuums when the pump exceeds the water supply

Protective devices must be used to eliminate possible contamination. DPD Correct Ans - (Diethel-P-Phenylene Diamine) A reagent and test method that specifically measures the free available chlorine and total chlorine. It produces a series of colors from pink to red. Flow meter Correct Ans - A device that measures pressure differential across a calibrated orifice and indicates a rate of flow at that point usually given in gallons per minutes Hard water Correct Ans - Water that has a high level of calcium and magnesium dissolved in it Iron Correct Ans - A metallic element that forms compounds causing orange or brown colored water and orange or brown colored stains on pool or spa walls Oxidation reduction potential Correct Ans - A method of measuring the potential, which often relates to the concentration of an oxidizer in the pool water. ORP probes send signals to electrical controllers that can control valves on chemical feeders to dissolve and release disinfectants. Pathogen Correct Ans - Micro organism that causes disease in humans. pH Correct Ans - Value expressing the relative acidity or alkalinity Of pool or spa water as indicated by hydrogen ion concentration. It is expressed as a number between zero and 14. Low pH values cause corrosion of equipment and pool or spa surfaces. High pH values cause scale and reduce the effectiveness of sanitizers. ppm Correct Ans - Parts per million

Phenol red Correct Ans - A red chemical reagent that reacts with the hydrogen ion in pool or spa water to indicate the pH value Residual Correct Ans - The concentration of a chemical (typically the disinfectant) in water. Scale Correct Ans - The hard mineral deposits that forms on surfaces in contact with water when the calcium hardness, pH or total alkalinity levels are too high Shock Correct Ans - The practice of adding significant amounts of oxidizing chemical to water to destroy ammonia and nitrogen compounds and swimmer or bather contaminants Super chlorination Correct Ans - The practice of adding enough chlorinating compound to water to attain 5 to 10 ppm free available chlorine as measured with a DPD test kit Total chlorine Correct Ans - Total of all free available chlorine and combined chlorine in the water Total dissolved solids Correct Ans - The sum total of all dissolved material in the water Ounces to pounds conversion Correct Ans - # oz / 16 = lbs Fluid ounces to gallons conversion Correct Ans - # fl oz / 128 = gal Yards to feet conversion Correct Ans - # yards * 3 = ft Meters to feet conversion Correct Ans - # meters * 3. = ft Surface area of a square or rectangle calculation Correct Ans - Length * width = sq ft

Filter surface area (sq ft) Correct Ans - Flow rate / filter rate How much? Correct Ans - Test reading - desired reading = calculated change Amount of chemical from chart * pool volume/10,000 * calculated change = quantity needed Parameters of Free chlorine residual Correct Ans - Pool

  • 1 to 5 ppm Spa - 2 to 5 ppm Wade - 1 to 5 ppm Spray pad - 2 to 5 ppm Parameters of Max combined chlorine Correct Ans - 0. ppm but recommended 0.2 ppm Parameters of total available bromine Correct Ans - Pool - 2 to 6 ppm Spa - 2 to 6 ppm Wade - 2 to 6 ppm Spray pad - 4 to 6 ppm Parameters of pH Correct Ans - 7.2 to 7.8 but recommended 7.4 to 7. Parameters of Cyanuric acid (stabilizer) Correct Ans - 100 ppm max but recommended 30 to 50 ppm Parameters of temperature Correct Ans - 104°F max but recommended less than this Parameters of total alkalinity Correct Ans - Recommended between 80 ppm and 120 ppm Parameters of calcium hardness Correct Ans - Recommended between 200 ppm and 400 ppm

Parameters of total dissolved solids Correct Ans - Less than 1500 ppm Turnover rates parameters Correct Ans - Pool - 6 hours Spa - 1/2 hour Wade - 1 hour Spray pad - 1/2 hour Old grandfathered rates Pool - 6 hours Spa - 1 hour Wade - 2 hour Pool capacity or bathing capacity per person Correct Ans - Pool - 25 sq ft Spa - 10 sq ft Wade - 25 sq ft Opening a seasonal pool Correct Ans - Be sure all components of your pool are functioning properly and water chemistry is correct Schedule a pre-opening inspection 3 to 5 days in advance Alb EDH 768-2600 or 311 Bernalillo county 314- State of an NM-Contact local Env. Dept. for invoice and make checks payable to Water Rec Facilities Fund Plans and specifications are required for any plan changes to existing approved facilities The certified operator on staff or by contract must be present Filters, chlorinators, brominators, etc.and VGB compliant drain covers must have...? Correct Ans - ANSI accreditation and have a national sanitation foundation (NSF), UL, or ETL seal of approval. Test for chlorine and bromine is by...? Correct Ans - DPD method

(2) anti-siphon device protected for other means of adding water to the pool Oh spas in wading pools are to be equipped did with...? Correct Ans - Oxidation - reduction potential(ORP) automatic disinfection and pH controllers Pools so equipted with ORP still need to be tested...? Correct Ans - Prior to daily opening and one additional time halfway through the period of operation Maximum ____ minute timer for spas located a minimum of ____ feet horizontally Correct Ans - 15 minutes 6 feet Shatterproof thermometers...? Correct Ans - Required Records Correct Ans - Pool operator certification MSDS for all chemicals used Accidents and fecal accidents Date name of certified operator and lifeguard if required Disinfectant residuals and pH Filter pressure and backwash time when necessary Water clarity, flow rate, and number of bathers Daily temp of spa Werkly cyanuric acid levels Testing or calibration of automatic equipment Close pool when...? Correct Ans - Main drain is not visible Drena gate is not secure Recirculation equipment fails Addition of chemicals is necessary to correct water chemistry Any electrical hazard is present Water temperature exceeds 140° Fahrenheit Chemical safety Correct Ans - Read and follow label instructions Always add chemicals to water

Protect yourself at all times Never mix chemicals are interchange scoops and dippers Store chemicals right. Store chemicals tight. Right to entry Correct Ans - The enforcement authority, upon presentation of credentials shall

  • have right of entry to premises where a permitted or unpermitted pool is located
  • on any promises were records that are required to be maintained are kept He or she may at reasonable times inspect facilities, copy records, and obtain any sample required Responsibility Correct Ans - The owner/operator must assure the premises are safe, equipment is fit, and the facility is operated in compliance with state and local regulations You must exercise reasonable care Protect employees and facility users Amount of calcium hypochlorite needed to treat 10,000 gallons of water Correct Ans - 2 oz or 1/4 cup changes 10, gallons of water by 1 ppm Amount of sodium hypochloride -bleach needed to treat 10, gallons of water Correct Ans - 13 fl oz changes 10, gallons of water by 1 ppm Amount of Dichlor needed to treat 10,000 gallons of water Correct Ans - 2 1/2 fl oz changes 10,000 gallons of water by 1 ppm Amount of trichloride needed to treat 10,000 gallons of water Correct Ans - 1 1/2 oz changes 10,000 gallons of water by 1 ppm Amount of lithium hypochlorite needed to treat 10,000 gallons of water Correct Ans - 3.8 oz changes 10,000 gallons of water by 1 ppm

7.2 - 7.4 is 6 oz Decrease of pH using muriatic acid Correct Ans - 8.0 - 7.6 is 16 oz 7.8 - 7.6 is 12 oz