Phase 1 Cold water PP3

What is the minimum requirement for a potable water supply outlet in a dwelling?

• No specific requirement

• At least two in the kitchen

• Only in the bathroom

• At least one, normally the kitchen sink

Which type of cold water system is most common in modern domestic properties?

• Direct cold water systems

• Gravity-fed systems

• Boosted cold water systems

• Indirect cold water systems

What is the typical storage requirement for supplying cold water to a hot water cylinder in a direct system?

• No storage required

• 100-litre cistern

• 150-litre cistern

• 200-litre cistern

In an indirect cold water system, where is the cold water storage cistern typically located?

• In the roof space

• In the basement

• Under the kitchen sink

• Outside the building

Why are direct boosting systems often not allowed by water undertakers?

• They are too expensive

• They can reduce mains pressure for other consumers

• They are not effective

• They require too much maintenance

What triggers the pumps in a direct boosted cold water system?

• A timer

• A float switch device

• Manual activation

• A pressure sensor

What is the main advantage of using submersible pumps in boreholes?

• They prevent water cavitation

• They are cheaper

• They require less energy

• They are easier to install

What is the purpose of a break cistern in an indirect boosted cold water system?

• To measure water consumption

• To heat the water

• To store the water before pumping

• To filter the water

What is the typical diameter of boreholes used for private water supplies?

• 200–250mm

• 300–350mm

• 50–75mm

• 100–150mm

How is the water level controlled in an indirect boosted cold water system?

• By a manual valve

• By a thermostat

• By water level switches

• By a timer