L2 Cold Water Quzzizz

Type your answer. What is the name of the process when water molecules become excited and enter the atmosphere?

(a)  

Identify number 2 on this picture.

• Trunk main

• Principle main

• Local main

• Water Undertakers main

Type your answer. A (a)   is used as the initial treatment process for raw water, allowing for sedimentation of larger particles to occur.

Type your answer. The (a)   stage consists of granular activated carbon and sand filters. These trap any fine suspended matter and organic matter including pesticides.

This is water that contains calcium sulphates or (limestone). The hardness of this water cannot be removed by boiling.

• Permanent hard water

• Hard water

• Temporary hard water

• Soft water

This water causes problems to plumbing systems through electrolytic corrosion.

• Soft water

• Hard water

• Permanently hard water

• Temporary hard water

Identify number 3 in this image.

• Principle main

• Trunk main

• Local main

• Service pipe

What kind of fittings should be used to avoid contamination?

• WRAS approved fittings

• Corrosion resistant fittings

• Contamination resistant fittings

• Compression fittings

Which two tests are key for a cold water system?

• Pressure

• Flow rate

• Temperature gain

• pH levels

• Bacterial growth levels

Select two advantages of an indirect system.

• Unaffected by peak demand.

• Potable water at every draw off point.

• Stored supply of water should interruption occur to the main.

• No concerns about storage cisterns in loft.

• Good pressure at all outlets.