Water Supply Regulations phase 2 1.11pt 1 Quiz

What is backflow in the context of water supply?

• The normal flow of water in a pipe

• The reversing of the normal direction of water flow

• The increase of water pressure upstream

• The purification of water supply

What can cause backflow in a water system?

• Increased water temperature

• Backpressure or back syphonage

• Decreased water temperature

• Water filtration

What is backpressure in the context of backflow?

• When water pressure upstream is greater than downstream

• When water pressure downstream is greater than upstream

• When water temperature is higher than normal

• When water flow is faster than usual

What is back syphonage?

• Water flowing faster than normal

• Water being sucked backwards due to sudden loss of pressure

• Water being heated to a high temperature

• Water being filtered through a system

What causes backflow by back pressure in a water system?

• High pressure in the main

• Zero pressure in the main

• Increased water temperature

• Decreased water temperature

What is the result of a sudden loss of pressure due to a burst on the water undertaker's main?

• Water flows downstream

• Water flows upstream

• Water temperature increases

• Water temperature decreases

What is the main cause of backflow by back syphonage?

• High pressure in the water main

• Gravity and zero pressure in the main

• Increased water temperature

• Blockage in the pipes

What happens to the water in the bath during back syphonage?

• It remains in the bath

• It is pushed towards the drain

• It is sucked out towards the water main

• It evaporates

What can cause a sudden loss of pressure in the water main, leading to back syphonage?

• A leak in the shower

• A burst on the water undertaker's main

• A clogged drain

• High water usage

What is the most effective method of preventing contamination between water undertakers' mains cold water supply and unwholesome sources?

• Chemical treatment

• Filtration

• Air gaps

• Boiling