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Sustainability is about whether or not WASH services and good hygiene practices continue to work over time. No time limit is set on those continued services and accompanying behaviour changes. In other words, sustainability is about permanent beneficial change in WASH services and hygiene practices. <ref>Richard C Carter, Erik Harvey, Vincent Casey (WaterAid, UK), [http://www.ircwash.org/resources/user-financing-rural-handpump-water-services-paper-presented-irc-symposium-%E2%80%98-pumps-pipes User financing of rural handpump water services]. IRC Symposium 2010. Pumps, Pipes and Promises. IRC.</ref>
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Several [[Sustainability Frameworks and Tools|sustainability frameworks]] show how to move from failing systems to reliable and lasting water and sanitation services.
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Sustainability approaches for the WASH sector began in response to recurring project problems over time, which wasted billions of US dollars invested and resulted in failures such as pump breakdowns or sanitation systems overflowing as toxic pollution into the surrounding environment. With projects abandoned, communities were left, lacking proper fresh water access or hygienic sanitation solutions. This led to the realisation that sustainable service delivery required a sector-wide process of change. <ref>Schouten, T and Moriarty, P. , 2013. [http://www.waterservicesthatlast.org/media/publications/working_paper_3_theory_of_change The Triple-S theory of change. (Triple-S working paper ; 3)]. The Hague, The Netherlands: IRC International Water and Sanitation Centre. </ref>}}{{Accordion-section | title=F.I.E.T.S Model | text=
This portal uses the basic structure of the [http://www.washalliance.nl/sustainability-portal/ five sustainability elements of FIETS], as developed by the Dutch WASH Alliance, to categorise many different frameworks, approaches and tools of sustainable WASH methods:
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| align="center" valign="top" | {{Icon|file=f-sust icon.png|alt=Urine Makes Money - Productive sanitation story from China|width=85|link=Urine Makes Money - Productive sanitation story from China}}<br/>[[Urine Makes Money - Productive sanitation story from China|Urine Makes <br>Money - Productive <br>sanitation story <br>from China]]
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| align="center" valign="top" | {{Icon|file=i-sust icon.png|alt= Planning of Sustainable Sanitation for Cities|width=85|link= Planning of Sustainable Sanitation for Cities}}<br/>[[ Planning of Sustainable Sanitation for Cities| Planning of Sustainable <br>Sanitation for Cities]]
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| align="center" valign="top" | {{Icon|file=i-sust icon.png|alt= SFD - An excreta flow diagram|width=85|link= SFD - An excreta flow diagram}}<br/>[[SFD - An excreta flow diagram| SFD - An excreta <br>flow diagram]]
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| align="center" valign="top" | {{Icon|file=e-sust icon.png|alt=Ecological Sanitation (EcoSan)|width=85|link=Ecological Sanitation (EcoSan)}}<br/>[[Ecological Sanitation (EcoSan)|Ecological Sanitation <br>(EcoSan)]]
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| align="center" valign="top" | {{Icon|file=e-sust icon.png|alt=Piloting ECOSAN in a rural school - School sanitation story from Colombia|width=85|link=Piloting ECOSAN in a rural school - School sanitation story from Colombia}}<br/>[[Piloting ECOSAN in a rural school - School sanitation story from Colombia | Piloting ECOSAN<br> in a rural school<br> - Colombia]]
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| align="center" valign="top" | {{Icon|file=water security icon.png|alt=Water security|width=80|link=Water security}}<br/>[[Water security|Water security]]
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| align="center" valign="top" | {{Icon|file=e-sust icon.png|alt=Ecological Sanitation for Rural Areas - School sanitation story from Kyrgyzstan|width=80|link=Ecological Sanitation for Rural Areas - School sanitation story from Kyrgyzstan}}<br/>[[Ecological Sanitation for Rural Areas - School sanitation story from Kyrgyzstan | Ecological Sanitation <br>for Rural Areas <br>- Kyrgyzstan]]
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| align="center" valign="top" | {{Icon|file=s-sust icon.png|alt=Public Awareness Raising & Sanitation Marketing |width=85|link=Public Awareness Raising & Sanitation Marketing }}<br/>[[Public Awareness Raising & Sanitation Marketing|Public Awareness<br> Raising & <br>Sanitation Marketing]]
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| align="center" valign="top" | {{Icon|file=s-sust icon.png|alt=School competition "Toiletten machen Schule" - Awareness raising story from Germany |width=85|link=School competition "Toiletten machen Schule" - Awareness raising story from Germany }}<br/>[[School competition "Toiletten machen Schule" - Awareness raising story from Germany | School sanitation <br>competition - Germany]]
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| align="center" valign="top" | {{Icon|file=s-sust icon.png|alt=Water and Sanitation Safety Plan program - Awareness raising story from Moldova |width=85|link=Water and Sanitation Safety Plan program - Awareness raising story from Moldova }}<br/>[[Water and Sanitation Safety Plan program - Awareness raising story from Moldova | WASH Safety Plan program - Moldova]]
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| align="center" valign="top" | {{Icon|file=child_schools icon.png|alt=Sustainable Sanitation for Schools |width=80|link=Sustainable Sanitation for Schools }}<br/>[[Sustainable Sanitation for Schools|Sustainable Sanitation <br>for Schools]]
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| align="center" valign="top" | {{Icon|file=child_schools icon.png|alt=Putting sanitation first - School sanitation story from India |width=80|link=Putting sanitation first - School sanitation story from India }}<br/>[[Putting sanitation first - School sanitation story from India | Improved sanitation <br>facilities keep girls<br> in school - India]]
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| align="center" valign="top" | {{Icon|file=child_schools icon.png|alt=Sarar Transformación - School sanitation story from Mexico |width=80|link=Sarar Transformación - School sanitation story from Mexico }}<br/>[[Sarar Transformación - School sanitation story from Mexico | Sarar Transformación <br>sanitation - Mexico]]
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| align="center" valign="top" | {{Icon|file=child_schools icon.png|alt=Peepoo school program - Kenya |width=80|link=Peepoo school program - Kenya }}<br/>[[Peepoo school program - Kenya|Peepoo school <br>program - Kenya]]
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| align="center" valign="top" | {{Icon|file=s-sust icon.png|alt=Hygiene and Health focused promotion |width=85|link=Hygiene and Health focused promotion }}<br/>[[Hygiene and Health focused promotion|Hygiene and Health <br>focused promotion]]
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| align="center" valign="top" | {{Icon|file=s-sust icon.png|alt=Promotion of healthy practices - Education project in Bolivia |width=85|link=Promotion of healthy practices - Education project in Bolivia }}<br/>[[Promotion of healthy practices - Education project in Bolivia | Promotion of healthy <br>practices - Bolivia]]
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