AWWA Certification Prep Course: Comprehensive Study Guide
A watercourse that flows continuously at all times of the year is known as what? - correct answer
✔✔Perennial stream
What is defined as 'the killing or inactivation of pathogenic organisms in water'? - correct answer
✔✔Disinfection
Free chlorine residual values are based on a contact time of how long? - correct answer ✔✔10 mins
What time of day does algae cause the pH of the water decrease? - correct answer ✔✔Night time
What contributes to the creation of algae blooms? - correct answer ✔✔Increased nutrients
What is found mainly in groundwater sources and forms a precipitate when oxidized? - correct answer
✔✔Iron
The riparian doctrine is also known as what? - correct answer ✔✔Rule of reasonable sharing
What is the typical strength of calcium hypochlorite, i.e. available chlorine range? - correct answer
✔✔65-70%
Which chemicals will raise pH? - correct answer ✔✔Soda ash,
Lime,
Caustic soda
What should be used by an operator to test for residual chlorine? - correct answer ✔✔DPD (N, N-
diethyl-p-phenylenediamine)
pH is a measure of? - correct answer ✔✔Hydrogen ion concentration
, After chlorination, what is included in free chlorine residuals? - correct answer ✔✔OCL- and HOCL
After initial full service operation, grease lubricated bearings should be re-greased at what frequency? -
correct answer ✔✔3 to 6 months
If only two rings of packing are used in the stuffing box, how should the joints should be? - correct
answer ✔✔Staggered
Opening the discharge valve one full turn on a chlorine cylinder will? - correct answer ✔✔Permit
maximum discharge
What defines the term "C value"? - correct answer ✔✔Number that describes the smoothness of the
interior of a pipe
Tubercles can form on which type of pipe? - correct answer ✔✔Ductile iron
Which disease is capable of being transmitted by water? - correct answer ✔✔Typhoid
Which act directly impacts the treatment of drinking water? - correct answer ✔✔Safe water drinking act
Corrosive water acting on a customers plumbing may cause which metal to enter their drinking water? -
correct answer ✔✔Lead
What is the most common water complaint? - correct answer ✔✔Objectionable taste and/or odor
According to the Surface Water Treatment Rule, water systems serving a population greater than 500
Persons must sample the filtered water for turbidity how often? - correct answer ✔✔Every 4 hours
For surface water systems without filtration, the SWTR requires public water systems to? - correct
answer ✔✔Maintain a C x T value above the minimum value
A watercourse that flows continuously at all times of the year is known as what? - correct answer
✔✔Perennial stream
What is defined as 'the killing or inactivation of pathogenic organisms in water'? - correct answer
✔✔Disinfection
Free chlorine residual values are based on a contact time of how long? - correct answer ✔✔10 mins
What time of day does algae cause the pH of the water decrease? - correct answer ✔✔Night time
What contributes to the creation of algae blooms? - correct answer ✔✔Increased nutrients
What is found mainly in groundwater sources and forms a precipitate when oxidized? - correct answer
✔✔Iron
The riparian doctrine is also known as what? - correct answer ✔✔Rule of reasonable sharing
What is the typical strength of calcium hypochlorite, i.e. available chlorine range? - correct answer
✔✔65-70%
Which chemicals will raise pH? - correct answer ✔✔Soda ash,
Lime,
Caustic soda
What should be used by an operator to test for residual chlorine? - correct answer ✔✔DPD (N, N-
diethyl-p-phenylenediamine)
pH is a measure of? - correct answer ✔✔Hydrogen ion concentration
, After chlorination, what is included in free chlorine residuals? - correct answer ✔✔OCL- and HOCL
After initial full service operation, grease lubricated bearings should be re-greased at what frequency? -
correct answer ✔✔3 to 6 months
If only two rings of packing are used in the stuffing box, how should the joints should be? - correct
answer ✔✔Staggered
Opening the discharge valve one full turn on a chlorine cylinder will? - correct answer ✔✔Permit
maximum discharge
What defines the term "C value"? - correct answer ✔✔Number that describes the smoothness of the
interior of a pipe
Tubercles can form on which type of pipe? - correct answer ✔✔Ductile iron
Which disease is capable of being transmitted by water? - correct answer ✔✔Typhoid
Which act directly impacts the treatment of drinking water? - correct answer ✔✔Safe water drinking act
Corrosive water acting on a customers plumbing may cause which metal to enter their drinking water? -
correct answer ✔✔Lead
What is the most common water complaint? - correct answer ✔✔Objectionable taste and/or odor
According to the Surface Water Treatment Rule, water systems serving a population greater than 500
Persons must sample the filtered water for turbidity how often? - correct answer ✔✔Every 4 hours
For surface water systems without filtration, the SWTR requires public water systems to? - correct
answer ✔✔Maintain a C x T value above the minimum value
