[[Image:Deep_well_pump_icon.png|right|80px]]
[[Image:elevated plastic tanks.png|thumb|right|200px|Photo: [http://www.samsamwater.com/library/Book7_Water_from_roofs.pdf SamSam Water]]]
[[Image:plastic elev tank.png|thumb|right|200px|Photo: [http://www.new-ag.info/en/research/innovationItem.php?a=2706 Water harvesting technologies increase productivity in Jamaica].]]
One option for plastic tanks is cylindrical tanks that are made of two seamless layers of [http://www.essentialchemicalindustry.org/polymers/polyethene.html polyethene]; the inner layer being white and the outer being black. The tanks are UV stabilized and will not break down under harsh outdoor weather conditions.
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===Costs===
[[File:plastic tanks costs.png|thumb|none|500px|Chart: [http://www.samsamwater.com/library/Book7_Water_from_roofs.pdf SamSam Water]]]
===Manuals, videos and links===
* [http://www.rainharvest.co.za/2010/09/water-tank-platforms-guidelines/ Water Tank Platforms: Guidelines]. Rainharvest.co.za.
* [http://www.neltanks.co.za/ Nel Tanks cc]. Blackheath Cape Town.
* [http://www.polytankskenya.com/index.php?option=com_content&view=article&id=Costs==64&Itemid=59 Polytanks Limited]. Kenya. * [[Filehttp:plastic tanks costs//www.jojotanks.co.ke/ JoJo Tanks].png|thumb|none|500px|Chart: Kenya. * [http://www.samsamwaterjojotanks.comco.za/library/Book7_Water_from_roofsJoJo Tanks]. South Africa.pdf SamSam Water]]]
* [http://www.rotoplc.com/ Roto PLC]. Plastic tanks in Ethiopia. (English and Amharic).
* ARTICLE: [http://www.2merkato.com/tenders/view/38780 UNICEF Ethiopia invites bidders for Supply of Plastic Water Tanks].
===Acknowledgements===
* SamSam Water - [http://www.samsamwater.com/library/Book7_Water_from_roofs.pdf Book7: Water from roofs].