Editing Permaculture (section)

=== Rainwater harvesting ===

{{further|Rainwater harvesting}}

[[File:Rainwater Collection.JPG|thumb|Rainwater collection is a common practice of permaculture.]]

[[Rainwater harvesting]] is the accumulation and storage of rainwater for reuse before it runs off or reaches the [[aquifer]].<ref name="Rainwater harvesting">{{Cite web |year=2012 |title=Rainwater harvesting |url=http://aramo.de/rain.html |url-status=dead |archive-url=https://archive.today/20130606063516/http://aramo.de/rain.html |archive-date=6 June 2013 |access-date=19 August 2015 |publisher=Aramo |place=Germany }}</ref> It has been used to provide [[drinking water]], water for livestock, and water for [[irrigation]], as well as other typical uses. Rainwater collected from the roofs of houses<ref>{{Cite web |title=Rainwater harvesting: regulatory position statement |url=https://www.gov.uk/government/publications/rainwater-harvesting-regulatory-position-statement/rainwater-harvesting-regulatory-position-statement |access-date=2022-12-27 |website=GOV.UK }}</ref> and local institutions can make an important contribution to the availability of drinking water. It can supplement the water table and increase urban greenery. Water collected from the ground, sometimes from areas which are specially prepared for this purpose, is called [[stormwater harvesting]].<ref>{{Cite web |title=Stormwater harvesting {{!}} Melbourne Water |url=https://www.melbournewater.com.au/building-and-works/stormwater-management/stormwater-harvesting#:~:text=Stormwater%20harvesting%20involves%20collecting,%20treating,from%20drains%20rather%20than%20roofs. |access-date=2022-12-27 |website=www.melbournewater.com.au}}</ref>

[[Greywater]] is [[wastewater]] generated from domestic activities such as laundry, dishwashing, and bathing, which can be recycled for uses such as landscape irrigation and [[constructed wetland]]s. Greywater is largely sterile, but not [[potable]] (drinkable).<ref>{{Cite web |title=Greywater Recycling |url=https://www.thegreenage.co.uk/tech/greywater-recycling/ |access-date=2022-12-27 |website=TheGreenAge|date=14 April 2013 }}</ref>

[[Keyline design]] is a technique for maximizing the beneficial use of water resources. It was developed in Australia by farmer and engineer [[P. A. Yeomans]]. ''Keyline'' refers to a [[contour line]] extending in both directions from a keypoint. Plowing above and below the keyline provides a watercourse that directs water away from a purely downhill course to reduce erosion and encourage infiltration.<ref>{{Cite book |last=Yeomas |first=P.A |title=The Keyline plan |publisher=Authour |year=1954 |location=Australia |pages=120}}</ref> It is used in designing drainage systems.<ref>{{Cite news |last=Tipping |first=Don |date=4 January 2013 |title=Creating Permaculture Keyline Water Systems |publisher=Beaver State Permaculture |location=UK |type=video |url=http://www.permaculture.co.uk/videos/creating-permaculture-keyline-water-systems-don-tipping}}</ref>