Water Quality and Plumbing

What are the purposes of a ferrule in cold water distribution?

• Tapping into the main

• Point of isolation

• Feed to property

• All of the above

What is the minimum diameter required for a rising main?

• 15mm

• 25mm

• 20mm

• 30mm

What is the minimum diameter required for a communication pipe?

• 15mm

• 25mm

• 20mm

• 30mm

What is the minimum diameter for the rising main in millimeters?

• 15mm

• 25mm

• 20mm

• 30mm

What type of meter is shown in the image?

• Internal water meter

• Gas meter

• Electric meter

• External water meter

What is a boundary meter box used for?

• To house an external water meter

• To store tools

• To measure electricity

• To control gas flow

What is the main requirement mentioned for internal meters?

• Cross bonding for safety

• Increased water pressure

• Temperature regulation

• Flow control

Why should MDPE not be placed more than 150mm above floor level?

• It is more expensive

• It degrades in sunlight

• It is difficult to install

• It is not durable

What is the main function of the stop valve?

• To filter water

• To create a watertight seal

• To heat water

• To cool water

Who has produced the guide to the Water Regulations?

• National Plumbing Association

• WRAS

• Government Health Department

• Environmental Agency