WRAS stands for?

• Water Regulations Application Service

• Water Regulations Advisory Service

• Water Regulations Advisory Scheme

• Water Regulations Arbitration Site

When the treated water leaves the treatment plant the diameter of pipe is 600mm. But what size diameter is the MDPE pipe at the "local mains"?

• 15mm

• 22mm

• 25mm

• 28mm

The Water Regulations 1999 were introduced to encourage the; waste, undue consumption, misuse, contamination and erroneous measurement of water

• True

• False

What is a ferrule?

• An iron measuring device

• A fitting used to connect to a water main

• A metal containing iron

From the following, select the option that is not a source of surface water.

• Artisan wells

• Lakes

• Reserviors

• Streams

Who has responsibility for repairing and maintaining the Service pipe?

• Local authority

• Property owner

• Water undertaker

• Government

Very soft water has CO₂ added to it

• True

• False

In the water treatment process, what is filtration?

• Where the water flows over a graded sand bed

• Where water flows through a paper screen

• Where water flows over marble

• Where water is allowed to fill a cistern to the top

At what temperature does temporary hard water begin to form limescale?

• 55°C

• 65°C

• 85°C

• 100°C

The chemical compound for calcium carbonate is CaCO_3.

• True

• False