Story: Sewage, water and waste

Sanitary landfill

Click the arrows to see a cross-section of an empty, partially full and full sanitary landfill. The base of a new landfill is above groundwater level and lined with a protective layer. A drain diverts leachate to a storage facility, with landfill gas vented or flared. Underground wells and above ground systems monitor the condition of groundwater and landfill gas levels. Once full, the top layer of a landfill is covered in grass.

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How to cite this page:

Christine Dann, 'Sewage, water and waste - Cleaning up dumps', Te Ara - the Encyclopedia of New Zealand, http://www.TeAra.govt.nz/en/interactive/24458/sanitary-landfill (accessed 14 April 2021)

Story by Christine Dann, published 11 Mar 2010