Glossary


At the end of each definition in this Glossary there is a number in brackets. This indicates the number of the Study Session where the term is first used in this OpenWASH module.

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I

impervious material

material that does not let any liquid pass through it (11)


improved sources (of water)

water sources that are protected from contamination (1)


incident (water supply)

an emergency situation such as a burst pipe (8)


indicator

biological species that gives information about the environment (2)


infectious agents

micro-organisms and viruses that can invade the human body and cause disease (2)


inorganic material

material that does not originate from living organisms (4)


internally displaced people (IDP)

people who have been forced to flee to another part of their own country due to factors beyond their control (14)



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