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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H

hazard

anything that can cause harm or damage (8)

hazardous event

an event that can introduce a hazard to a water supply (8)

helminths

worms that live as parasites in humans and other animals (2)

household sand filter

device for purifying water using gravel, coarse sand and fine sand (10)

hydroelectric power

power produced by harnessing the energy of moving water (1)

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