Cross connection


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Terms & Synonyms

Official WHO Definition

Any connection, physical or otherwise between a drinking water system and non drinking water, where contamination can enter the drinking water supply lines by, back pressure, back-syphonage, and back flow occurring in the water supply system (American Society of Sanitary Engineering 2007). Any physical connection or arrangement between two other-wise separate piping systems or containment means, one of which contains potable water, and the other water or fluid of unknown or questionable safety (WHO 2006).

Other Definitions


Interpretations and Explanations

A drinking water supply system and a non potable water source should not be deliberately connected (World Plumbing Council Working Group 2008).


American Society of Sanitary Engineering (2007) Plumbing Dictionary. Sixth Edition WHO (2006) Health aspects of plumbing

WHO Lexicon page (translations and examples)

See also

External Resources


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