Water Mains and Water Supply Systems Quiz

What is the primary function of a toby?

• To add chlorine to the water

• To measure water flow

• To filter water

• To isolate the home plumbing system

Which of the following is NOT a function of a hydrant?

• Flushing

• Chlorination

• Measuring water pressure

• Releasing air during charging

What is the main difference between a thrust block and an anchor block?

• Thrust blocks are made of metal, anchor blocks are made of concrete

• Thrust blocks are used in vertical pipes, anchor blocks in horizontal pipes

• Thrust blocks are used for external forces, anchor blocks for internal forces

• Thrust blocks are used for internal forces, anchor blocks for external forces

What is the role of the Network Utility Operator (NUO)?

• To manage the quantity and quality of the public water supply

• To install water meters inside homes

• To install rainwater tanks

• To maintain private plumbing systems

What is the role of a plumber in a water supply system?

• To manage the public water supply

• To provide water to every outlet within the property

• To install water meters at the property boundary

• To treat and test the water supply

What should be done after completing the commissioning checks of a water supply system?

• Install the isolation valve

• Flush the system until the water runs clear

• Install the water meter

• Test the water pressure

Which of the following is a backflow prevention device?

• Water meter

• Double check valve

• Isolation valve

• Pressure gauge

What is the purpose of a first flush diverter in a rainwater collection system?

• To ensure the suction of water is just below the surface

• To improve water quality by preventing the first contaminated rainwater from entering the tank

• To discharge oxygenated water into the lower part of the tank

• To prevent leaves from entering the downpipe

What is the minimum requirement for polyethylene tanks?

• Certified to AS/NZS 4766

• Certified to AS/NZS 2180

• Certified to AS/NZS 3500.1

• Certified to AS/NZS 3735

What is the purpose of a calmed inlet in a water tank?

• To prevent leaves from entering the downpipe

• To ensure the suction of water is just below the surface

• To discharge oxygenated water into the lower part of the tank without disturbing the settlement

• To improve water quality by preventing the first contaminated rainwater from entering the tank