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supply potable water
The Plumbing system with your house has the role of transporting the water in the water supply system or the hot water from the heating system into your home. It is a set of well connected pipes and heating bodies that play the key role in heating up your home. I hope this helps. Bibika
A watershed is not a building, it is an area of land that contributes run off to a given lake, stream, river or other body of water. It's purpose is to supply water to the water body. (From Ask.com)
Irrigation systems such as irrigation ditches, channels and canals artificially supply dry land with water.A river is a system which supplies dry land with water naturally, not artificially.
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supply potable water
If you are referring to a regular building, the cold water feed pipe goes directly to all cold faucets, toilets and hot water tank. The purpose seems obvious.
The Plumbing system with your house has the role of transporting the water in the water supply system or the hot water from the heating system into your home. It is a set of well connected pipes and heating bodies that play the key role in heating up your home. I hope this helps. Bibika
A qanat is a water supply system used to supply a reliable amount of water to human settlements
Sydney Water Management System.
If you are referring to a regular building, the cold water feed pipe goes directly to all cold faucets, toilets and hot water tank. The purpose seems obvious.
Vent - Cold Water Supply - Drainage - hot water supply /return
Simply to provide a backup supply should the main supply from the water company be cut off
Water, especially in the ocean, is in abundant supply and it can be recycled easily, too.
to clean the people
the drainage basin
Transportation