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Water Portal / Rainwater Harvesting / Groundwater recharge / Wells, shafts, and boreholes

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====Maintenance====

Some chemical pretreatment of the water may be required to prevent flocculation of iron, CaCO3, etc. and chlorination of other disinfection may be needed to prevent microbial growth. Clogged wells may need to be recovered at regular intervals using surging and pumping to remove fines and bacterial growth physically and the use of a wetting agent to remove air in an air-clogged well. Carbonate aquifers exhibit the least amount of clogging due to the gradual dissolution of calcite by a slightly acidic injectant, if periodic backflushing is observed.

===Field experiences===

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|'''Akvo RSR Project:''' [http://wandelenvoorwater2014.akvoapp.org/en/project/467/ Community Water and Sanitation Project]

The aim of this project is to help improve water, sanitation & hygiene in three primary schools & the Ukpo hospital & provide hygiene education to the school/hospital management. In each of the project sites, one borehole, two compartments of 3 toilets (3 male/3 female) linked to one VIP toilet and a set of hand washing stations will be put in place. Positive changes expected from the project include constant water supply, cleaner environment for the children, improved health & hygiene education.

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===Manuals, videos and links===

Winona

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