This Policy Position Statement (PPS) considers the issues of the applicability of water reuse in the home from a water quality perspective, and sets out the position of the Chartered Institution of Water and Environmental Management on how best to progress this sensitive issue.
For the purpose of this PPS, greywater is a term used to describe the used water coming from washbasins, baths, showers and clothes washing machines. CIWEM does not advise that toilet, kitchen sink, or dish-washing machine effluent be included in this definition of grey water - these effluents are not suitable for the recycling applications referred to in this PPS due to their composition.
This PPS does not consider the quantitative impact of water reuse relating to conservation of potable water supplies or water reuse as a tool for demand management, (i.e. reducing per capita consumption).