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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A

abstraction

taking water from a source such as groundwater or a river (1)


acoustic logger

device attached to a pipe that can indicate a leak when the noise in the pipe changes (7)


active leakage control

searching for leaks and repairing them (7)


aerated

supplied with air (5)


aerobic

containing oxygen (4)


algal bloom

rapid increase in the population of microscopic algae in water (4)


anaerobic

without oxygen (4)


aquaculture

farming of aquatic (water-living) organisms (1)


aquifers

layers of underground rock that hold water (3)


asset management

systematic process of deploying, operating, maintaining and upgrading assets to ensure continuous water supply at minimal cost (9)


asset register

list of all the fixed assets of an organisation  with information pertaining to the assets (6)


assets

components of a water supply system, such as the treatment plants, process units and all the equipment and facilities (6)


audit trail

documentation of the sequence of activities that led to a given decision (8)



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