Water Supply and Regulations Quiz

What is the maximum depth a water main service pipe should be laid at?

• 750mm

• 1250mm

• 1,350mm

• 1,750mm

Fluid category 1 represents:

• a serious health risk

• a significant health risk

• a slight health risk

• no health risk

Which one of the following water pipes connects the local main to the water undertaker’s stop valve?

• The distribution pipe

• The communication pipe

• The feed pipe

• The service pipe

A cold water storage cistern base must be supported:

• over the whole of its base

• over at least three bearers

• by using chipboard

• over the majority of its base

Which one of the following backflow prevention devices must be installed on a supply to a hose union bib tap, according to the Water Regulations?

• AUK 2 air gap

• Single check valve

• Full-way gate valve

• Double check valve

Plastic medium density supply pipe, which is coloured blue, is manufactured from which one of the following materials?

• Polyethylene

• Polystyrene

• Polypropylene

• Polybutylene

The Water Regulations state that a mixer tap that allows the hot and cold water to mix in the body of the tap with unbalanced pressures must have:

• a double check valve on both hot and cold supplies

• a single check valve on both hot and cold supplies

• an AUK 2 air gap

• an AUK 3 air gap

Which one of the following is the minimum depth at which a water main service should be laid?

• 1,350mm

• 1,150mm

• 950mm

• 750mm

If a hand basin has submerged taps, which one of the following backflow prevention devices does the Water Regulations say must be installed?

• Overflow

• Single check valve

• Double check valve

• AUK 3 air gap

Which one of the following connections to the CWSC must be screened?

• Cold supply pipe

• Cold feed pipe

• Warning pipe

• Cold distribution pipe