Eddy Water Descalers

Cold Water Systems Including Indirect and Direct Systems Found in Your Home

This project is sponsored by Eddy Water Descalers

Summary: This DIY guide looks at the various cold water systems found within a home that include direct cold water systems and indirect cold water systems and how each of these systems works to supply water to a variety of appliances.

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Domestic water system

Domestic water system

Indirect Cold Water System

In the indirect cold water system, water comes into house via rising main. It is then branched off to feed at least one tap (in the image above, this is the kitchen and outside tap and the boiler next to the sink) and then continues to a storage tank in the loft. From here it is distributed to the other taps in the house. Overflow pipes are marked O. The position of stopcocks etc is marked on the diagram below which also shows the hot water path.

Domestic indirect water system

Domestic indirect water system

Direct Cold Water System

The picture below shows a direct cold water system where cold water is distributed all over the house at mains pressure.

Domestic direct water system

Domestic direct water system

You can also watch videos on domestic cold water feed in to the kitchen and cold water supply to a downstairs clockroom over on YouTube.

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