Aquatic Facility Operator Questions with Complete Solutions, Exams of Water and Wastewater Engineering

Aquatic Facility Operator Questions with Complete Solutions

Typology: Exams

2025/2026

Available from 03/25/2026

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Aquatic Facility Operator Questions with Complete
Solutions
What is NOT one of the AFO's primary responsibilities? - CORRECT ANSWER
Teaching Lessons
What should you do every day as a part of your AFO safety duty program? -
CORRECT ANSWER Facility Inspection
How many gallons of water is in one cubic ft? - CORRECT ANSWER
approximately 7.5
How do you calculate how many gallons are in a pool? - CORRECT ANSWER 1.
calculate the volume (LxW)xDavg
2. multiple by 7.5 gallons
Law of Dilution - CORRECT ANSWER During a turnover less than half of the
water molecules pass through the filter
What kind of pools need a higher turnover? - CORRECT ANSWER Special pools
When do gutters NOT work? - CORRECT ANSWER when flooded
What do surge pits need? - CORRECT ANSWER room to contain surge flow
What do modulating float valves regulate? - CORRECT ANSWER the amount of
water contributed by the bottom outlet by slowly restricting the bottom drain valve as the
water level in the surge pit rises
What are the two types of pumps? - CORRECT ANSWER Self-Priming and Flooded
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Aquatic Facility Operator Questions with Complete

Solutions

What is NOT one of the AFO's primary responsibilities? - CORRECT ANSWER Teaching Lessons What should you do every day as a part of your AFO safety duty program? - CORRECT ANSWER Facility Inspection How many gallons of water is in one cubic ft? - CORRECT ANSWER approximately 7. How do you calculate how many gallons are in a pool? - CORRECT ANSWER 1. calculate the volume (LxW)xDavg

  1. multiple by 7.5 gallons Law of Dilution - CORRECT ANSWER During a turnover less than half of the water molecules pass through the filter What kind of pools need a higher turnover? - CORRECT ANSWER Special pools When do gutters NOT work? - CORRECT ANSWER when flooded What do surge pits need? - CORRECT ANSWER room to contain surge flow What do modulating float valves regulate? - CORRECT ANSWER the amount of water contributed by the bottom outlet by slowly restricting the bottom drain valve as the water level in the surge pit rises What are the two types of pumps? - CORRECT ANSWER Self-Priming and Flooded

Suction Centrifugal

pH of soda ash - CORRECT ANSWER dissolved in water pH 13+ Safety considerations for chemical handling require what? - CORRECT ANSWER eye wash station When are chloramines formed? - CORRECT ANSWER under a heavy organic load with low chlorine levels, often with limited air movement How do you get rid of chloramines? - CORRECT ANSWER you super chlorinate How do you obtain combined chlorine? - CORRECT ANSWER (TC)-(FC) = combined chlorine How do you calculate breakpoint calculation? - CORRECT ANSWER multiply CC by 10 What should you always do when handling chemicals? - CORRECT ANSWER wear protective equipment For CSI, what does negative/positive mean - CORRECT ANSWER Negative = aggressive Positive = scaling What is the most influential variable in the CSI? - CORRECT ANSWER pH What is the maximum spa temperature and for how long? - CORRECT ANSWER 104 degrees for 15 minutes

What is total Alkalinity? - CORRECT ANSWER this is an index of the water's resistance to pH change What is the best recommendation for CH levels in pools? - CORRECT ANSWER 300-600ppm Why are pool heaters prone to scale? - CORRECT ANSWER because calcium carbonate is more likely to form on elevated temperatures with automation, why are large feed system important? - CORRECT ANSWER In order to meet set points quickly What is the most important factor related to pool water chemistry? - CORRECT ANSWER pH What should you automate if you can only afford to automate one? - CORRECT ANSWER pH What do typical chemical controllers measure? - CORRECT ANSWER ORP and pH What do chemical controllers NOT replace? - CORRECT ANSWER pool operator What is oxidation reduction potential (ORP)? - CORRECT ANSWER qualitative measure of chlorine's work value (how well it's working) What is the standard minimum ORP for virtually instantaneous pathogen deactivation? - CORRECT ANSWER 650mV