Basic water works operations exam 2023
correct answers 100%
How long must a water system save their bacteriological test results? - CORRECT ANSWERS5 years
Which of the following would be classified as a community type public water system? - CORRECT ANSWERSMobile home park
Which of the following agencies is responsible for regulating drinking water standards in the state of Texas? - CORRECT
ANSWERSTCEQ
The utility employee with the most frequent contact with the customer is the? - CORRECT ANSWERSMeter reader
Community water systems are required to provide customers with a yearly report on the system's water quality called the? -
CORRECT ANSWERSConsumer confidence report
Helpful, informative handouts sometimes included in water bills are called? - CORRECT ANSWERSStuffers
The process of the water moving between the earth and the atmosphere is called the? - CORRECT ANSWERSHydrologic cycle
The current limits on turbidity in filtered water are? - CORRECT ANSWERS< or =0.3 NTU'S
The 2 main minerals that cause hardness in water are? - CORRECT ANSWERSCalcium and magnesium
Water-bearing formations below the earth's surface are called? - CORRECT ANSWERSAquifers
All public water well may not have any source of contamination within? - CORRECT ANSWERS50 feet
Before putting a well into service,it must be disinfected by chlorination to a level of? - CORRECT ANSWERS50mg/L for 6hours
The particles formed after coagulation are called? - CORRECT ANSWERSFloc
The particles that settle to the bottom of a clarifier firm into? - CORRECT ANSWERSSludge
The final step in removing solids in surface water treatment is? - CORRECT ANSWERSFiltration
Waterborne disease causing organisms are called? - CORRECT ANSWERSPathogens
According to the rules and regulations for public water systems, a public water supply using chlorine as the distribution disinfectant
must maintain a free chlorine residual of what in the far reaches of the system? - CORRECT ANSWERS0.2 mg/L
The most superior chemical in oxidizing taste, odor, color, iron,manganese, or organics in water is? - CORRECT ANSWERSOzone
Water systems are required to have a storage capacity of how many gallons per connection? - CORRECT ANSWERS200
What psi is created by 1 foot column of water? - CORRECT ANSWERS0.433
Which pump type is the most commonly used by the water utilities industry? - CORRECT ANSWERSCentrifugal
What is the percentage of oxygen in normal air? - CORRECT ANSWERS20.9
What is the number 1 cause of death in confined spaces? - CORRECT ANSWERSLack of oxygen
All excavations deeper that how many feet require cave-in protection? - CORRECT ANSWERS5
A rectangular storage tank is 40 feet long,25 feet wide, and 10 feet deep. What is the volume in cubic feet? And how many gallons
the tank will hold when full? - CORRECT ANSWERS10000/74800
A clarifier is 60 feet in diameter and 12 feet deep.
What is the volume in cubic feet? And what is volume in gallons when full? - CORRECT ANSWERS33912/253661
A sedimentation tank is 75 feet long,35 feet wide and 15 feet deep.
What is the detention time in hours at a flow rate of 2 mgd? - CORRECT ANSWERS3.5
correct answers 100%
How long must a water system save their bacteriological test results? - CORRECT ANSWERS5 years
Which of the following would be classified as a community type public water system? - CORRECT ANSWERSMobile home park
Which of the following agencies is responsible for regulating drinking water standards in the state of Texas? - CORRECT
ANSWERSTCEQ
The utility employee with the most frequent contact with the customer is the? - CORRECT ANSWERSMeter reader
Community water systems are required to provide customers with a yearly report on the system's water quality called the? -
CORRECT ANSWERSConsumer confidence report
Helpful, informative handouts sometimes included in water bills are called? - CORRECT ANSWERSStuffers
The process of the water moving between the earth and the atmosphere is called the? - CORRECT ANSWERSHydrologic cycle
The current limits on turbidity in filtered water are? - CORRECT ANSWERS< or =0.3 NTU'S
The 2 main minerals that cause hardness in water are? - CORRECT ANSWERSCalcium and magnesium
Water-bearing formations below the earth's surface are called? - CORRECT ANSWERSAquifers
All public water well may not have any source of contamination within? - CORRECT ANSWERS50 feet
Before putting a well into service,it must be disinfected by chlorination to a level of? - CORRECT ANSWERS50mg/L for 6hours
The particles formed after coagulation are called? - CORRECT ANSWERSFloc
The particles that settle to the bottom of a clarifier firm into? - CORRECT ANSWERSSludge
The final step in removing solids in surface water treatment is? - CORRECT ANSWERSFiltration
Waterborne disease causing organisms are called? - CORRECT ANSWERSPathogens
According to the rules and regulations for public water systems, a public water supply using chlorine as the distribution disinfectant
must maintain a free chlorine residual of what in the far reaches of the system? - CORRECT ANSWERS0.2 mg/L
The most superior chemical in oxidizing taste, odor, color, iron,manganese, or organics in water is? - CORRECT ANSWERSOzone
Water systems are required to have a storage capacity of how many gallons per connection? - CORRECT ANSWERS200
What psi is created by 1 foot column of water? - CORRECT ANSWERS0.433
Which pump type is the most commonly used by the water utilities industry? - CORRECT ANSWERSCentrifugal
What is the percentage of oxygen in normal air? - CORRECT ANSWERS20.9
What is the number 1 cause of death in confined spaces? - CORRECT ANSWERSLack of oxygen
All excavations deeper that how many feet require cave-in protection? - CORRECT ANSWERS5
A rectangular storage tank is 40 feet long,25 feet wide, and 10 feet deep. What is the volume in cubic feet? And how many gallons
the tank will hold when full? - CORRECT ANSWERS10000/74800
A clarifier is 60 feet in diameter and 12 feet deep.
What is the volume in cubic feet? And what is volume in gallons when full? - CORRECT ANSWERS33912/253661
A sedimentation tank is 75 feet long,35 feet wide and 15 feet deep.
What is the detention time in hours at a flow rate of 2 mgd? - CORRECT ANSWERS3.5
