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Terms & Synonyms

Official WHO Definition

Any pipe or series of pipes used to transport waste water, sewage, effluent, storm water, or other waste liquids away from a building (ASSE 2007). A conduit or channel constructed to carry off stormwater runoff, wastewater or other surplus water. Drains can be open ditches or lined, unlined or buried pipes (WHO 2006).  

Other Definitions


Interpretations and Explanations

A drain relies on gravity to work and is mainly used to remove waste water from a building, or from an industrial process in a commercial industrial installation. It is usually below ground. A drain can also be a small pipe used for example, for the removal of condensation from air-conditioning equipment (World Plumbing Council Working Group 2008).


 American Society of Sanitary Engineering (ASSE) (2007) Plumbing Dictionary, 6th ed. Standards Australia/Standards New Zealand (2003) Plumbing and Drainage. Part 2. Sanitary Plumbing and Drainage. AS/NZS 3500WHO (2006) Guidelines for the safe use of wastewater, excreta and greywater   

WHO (2006) http://www.who.int/water_sanitation_health/publications/plumbinghealthasp/en/index.html">Health aspects of plumbing

WHO Lexicon page (translations and examples)

See also

External Resources


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