Swimming Pool Operator Certification Exam
Comprehensive Resource To Help You Ace 2026-2027
Exams Includes Frequently Tested Questions With
ELABORATED 100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
Instant Download Pdf
1. Acid demand - Correct Answer: The amount of acid required to reduce
pH and alkalinity to the correct range
2. Algae - Correct Answer: 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).
3. Alkalinity - Correct Answer: A measure of the ability of pool water to
resist changes in pH. Buffering capacity of water.
4. Balanced water - Correct Answer: The correct ratio of hardness,
alkalinity, temperature, dissolved solids, and pH that prevent pool water
from being either corrosive or scale forming
5. Bromine - Correct Answer: 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.
,6. Bromamine - Correct Answer: 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.
7. Calcium hardness - Correct Answer: 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.
8. Cavitation - Correct Answer: Formation of partial vacuums when the
pump exceeds the water supply
9. Chlorine - Correct Answer: A chemical element that exists as a gas in its
elemental form or as a part of a chemical compound that is an oxidant and
a biocidal agent used in pool, spa, and hot tub disinfection
10.Chlorine demand - Correct Answer: The amount of chlorine necessary
to destroy the germs, algae, and other impurities in the water. Demand
refers to the amount required before chlorine can be made available to
continue sanitizing the pool, spa, or hot tub water.
11.Chloramines - Correct Answer: A compound formed when chlorine
combines with ammonia, nitrogen, or swimmer or bather wastes. They
cause eye and skin irritation, and they have a strong objectionable odor.
12.Chlorine residual - Correct Answer: The amount of measurable chlorine
remaining after treating water with chlorine to disinfect and oxidize
, contaminants. It may also be explained as the amount of chlorine left after
satisfying the chlorine demand.
13.Free available chlorine (FAC) - Correct Answer: The portion of total
chlorine remaining in chlorinated water that is not combined with ammonia
or nitrogen compounds and will react chemically with undesirable or
disease causing organisms
14.Conditioner - Correct Answer: Also called cyanuric acid, stabilizer,
Isocyanuric acid and Triazinetrione-A chemical that helps reduce the
excessive loss of chlorine in water due to ultraviolet rays of the sun.
15.Copper - Correct Answer: Metallic element that forms compounds
causing green or blue green water, green or blue green stains in pool or spa
surfaces and green hair or blue fingernails on swimmers and bathers.
16.Cross connection - Correct Answer: An unprotected connection
between a domestic water supply and the pool. Protective devices must be
used to eliminate possible contamination.
17.DPD - Correct Answer: (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.
18.Flow meter - Correct Answer: 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
, 19.Hard water - Correct Answer: Water that has a high level of calcium and
magnesium dissolved in it
20.Iron - Correct Answer: A metallic element that forms compounds
causing orange or brown colored water and orange or brown colored stains
on pool or spa walls
21.Oxidation reduction potential - Correct Answer: 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.
22.Pathogen - Correct Answer: Micro organism that causes disease in
humans.
23.pH - Correct Answer: 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.
24.ppm - Correct Answer: Parts per million
25.Phenol red - Correct Answer: A red chemical reagent that reacts with
the hydrogen ion in pool or spa water to indicate the pH value
Comprehensive Resource To Help You Ace 2026-2027
Exams Includes Frequently Tested Questions With
ELABORATED 100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
Instant Download Pdf
1. Acid demand - Correct Answer: The amount of acid required to reduce
pH and alkalinity to the correct range
2. Algae - Correct Answer: 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).
3. Alkalinity - Correct Answer: A measure of the ability of pool water to
resist changes in pH. Buffering capacity of water.
4. Balanced water - Correct Answer: The correct ratio of hardness,
alkalinity, temperature, dissolved solids, and pH that prevent pool water
from being either corrosive or scale forming
5. Bromine - Correct Answer: 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.
,6. Bromamine - Correct Answer: 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.
7. Calcium hardness - Correct Answer: 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.
8. Cavitation - Correct Answer: Formation of partial vacuums when the
pump exceeds the water supply
9. Chlorine - Correct Answer: A chemical element that exists as a gas in its
elemental form or as a part of a chemical compound that is an oxidant and
a biocidal agent used in pool, spa, and hot tub disinfection
10.Chlorine demand - Correct Answer: The amount of chlorine necessary
to destroy the germs, algae, and other impurities in the water. Demand
refers to the amount required before chlorine can be made available to
continue sanitizing the pool, spa, or hot tub water.
11.Chloramines - Correct Answer: A compound formed when chlorine
combines with ammonia, nitrogen, or swimmer or bather wastes. They
cause eye and skin irritation, and they have a strong objectionable odor.
12.Chlorine residual - Correct Answer: The amount of measurable chlorine
remaining after treating water with chlorine to disinfect and oxidize
, contaminants. It may also be explained as the amount of chlorine left after
satisfying the chlorine demand.
13.Free available chlorine (FAC) - Correct Answer: The portion of total
chlorine remaining in chlorinated water that is not combined with ammonia
or nitrogen compounds and will react chemically with undesirable or
disease causing organisms
14.Conditioner - Correct Answer: Also called cyanuric acid, stabilizer,
Isocyanuric acid and Triazinetrione-A chemical that helps reduce the
excessive loss of chlorine in water due to ultraviolet rays of the sun.
15.Copper - Correct Answer: Metallic element that forms compounds
causing green or blue green water, green or blue green stains in pool or spa
surfaces and green hair or blue fingernails on swimmers and bathers.
16.Cross connection - Correct Answer: An unprotected connection
between a domestic water supply and the pool. Protective devices must be
used to eliminate possible contamination.
17.DPD - Correct Answer: (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.
18.Flow meter - Correct Answer: 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
, 19.Hard water - Correct Answer: Water that has a high level of calcium and
magnesium dissolved in it
20.Iron - Correct Answer: A metallic element that forms compounds
causing orange or brown colored water and orange or brown colored stains
on pool or spa walls
21.Oxidation reduction potential - Correct Answer: 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.
22.Pathogen - Correct Answer: Micro organism that causes disease in
humans.
23.pH - Correct Answer: 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.
24.ppm - Correct Answer: Parts per million
25.Phenol red - Correct Answer: A red chemical reagent that reacts with
the hydrogen ion in pool or spa water to indicate the pH value
