Last edited 13 Sep 2021

Types of water


Approved Document G (Sanitation, hot water safety and water efficiency), 2015 edition, defines a number of classifications of water.

  • Harvested rainwater: rainwater harvested from roofs or other suitable surfaces and collected and stored. When appropriately treated this may replace the use of wholesome water in WCs, urinals irrigation or washing machines.

The document also refers to:

Other definitions of water types might include:

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