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  • What we do
  1. About us
  2. What we do

What we do

Sand Dams Worldwide (formerly Excellent Development) is a registered charitable company that supports some of the world’s poorest people to transform their own lives through water and soil conservation in drylands. We do this in three ways:

  • By working with local partners, we support rural communities to gain access to clean water close to their homes and to invest in sustainable agriculture.
  • By pioneering sand dams, we promote and support the application of sand dam technology by key stakeholders in drylands.
  • By influencing and educating those who can help achieve our vision including – but not limited to – policy makers, international NGOs, government departments and civil engineering firms. 

Our charitable objects

  • To promote the conservation, protection and improvement of the physical and natural environment for the public benefit; and
  • To relieve poverty, in particular but not exclusively, by supporting sustainable development* projects; and
  • To advance the education of the public in the subjects of sustainable development, conservation and the relief of poverty, in particular but not exclusively by the undertaking and dissemination of research.

*Sustainable development is development that meets the needs of the present without compromising the ability of future generations to meet their own needs.

Our purpose

  • To support rural communities in dryland areas to gain access to clean water and grow enough food to eat and sell.
  • To pioneer the application of sand dam technology as part of an integrated approach to water security, sustainable development and infrastructure development.
  • To influence and educate via research, development of manuals and proofs, lobbying and partnerships such that Sand Dams Worldwide becomes the acknowledged source of expertise in this area.

Strategic objectives and public benefit statement

In setting our objectives and planning our activities our Trustees have given careful consideration to the Charity Commission’s general guidance on public benefit.

  • Support communities in drylands worldwide to achieve water and food security through soil and water conservation and improved farming techniques, as enabled by sand dams.
  • Promote community self-help as the critical factor in creating sustainable development.
  • Establish sand dams as a key water supply option alongside the more common water solutions.
  • Engage with organisations at the local, national and international level to influence and support wider adoption of sand dam technology.
  • Promote sand dams and soil and water conservation as a means of combating desertification, mitigating and adapting to the impacts of climate change, conserving biodiversity and enabling green economic growth.
  • Promote the use of sand dam technology as an alternative method of road crossings for seasonal rivers – both for public works and in wildlife reserves.
  • Enhance development education and awareness worldwide.
1 million sand dams for 0.5 billion people by 2050

1 million sand dams for 0.5 billion people by 2050

Read about our plan to directly support other organisations to build sand dams, in turn, realising our vision to support millions of the world’s poorest people by helping them to transform their own lives through water and soil conservation in drylands. Read more

Published: 11th May, 2018

Updated: 14th July, 2025

Author:

Our philosophy and values

Our philosophy and values

Our philosophy and values define who we are, every action we take and how we behave towards others. They are our most profound convictions. Each of us is called to respect, experience, enact and promote them. Read more

Published: 11th May, 2018

Updated: 21st March, 2022

Author:

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Latest

  • How Sand Dams Are Solving Water Scarcity: Podcast with fundsforNGOs

    How Sand Dams Are Solving Water Scarcity: Podcast with fundsforNGOs

    In an episode of the fundsforNGOs Podcast, Jon Lobb interviews Dwain Lucktung, Communications Manager at Sand Dams Worldwide, about how sand dams work and the impact of sand dam projects in drylands.

  • February 2026 sand dam expedition with Koy Clothing

    February 2026 sand dam expedition with Koy Clothing

    In February 2026, a group of volunteers teamed up with Sand Dams Worldwide, Koy Clothing and our local partner, Africa Sand Dam Foundation to support a community in Kenya to build a sand dam. The sand dam was funded by Koy Clothing and their wonderful customers, and will go on to provide the community with a local lifelong supply of clean water.

  • £22,304.97 raised in our 2026 Big Give Earth Raise campaign. Thank you!

    £22,304.97 raised in our 2026 Big Give Earth Raise campaign. Thank you!

    Sand Dams Worldwide is took part in the Big Give’s 2026 Earth Raise campaign (formerly the Green Match Fund), which offered supporters of participating charities the opportunity to have their donations doubled for just seven days. Over £22,000 was raised which will go towards a sand dam project in Tanzania.

  • Sand dams: empowering women and girls

    Sand dams: empowering women and girls

    Please donate what you can to help empower more vulnerable women and girls living in drylands (like Kenyan farmer Martha and her daughter, Faith) to access clean water with sand dams and transform their own lives.

Most read

  • We support communities to build sustainable sand dams in some of the poorest, drought-stricken regions across our world.

    We support communities to build sustainable sand dams in some of the poorest, drought-stricken regions across our world.

  • What is a sand dam?

    What is a sand dam?

  • Donate

    Donate

    Please click here to donate what you can to transform lives and land with sand dams and clean water.

  • Watch how sand dams work

    Watch how sand dams work

    Film explaining how sand dams work and their potential impact in the world's drylands

  • Reversing land degradation and desertification

    Reversing land degradation and desertification

    Conservation of the environment is critical to the economic development of people living in drylands.

  • 1 million sand dams for 0.5 billion people by 2050

    1 million sand dams for 0.5 billion people by 2050

    Read about our plan to directly support other organisations to build sand dams, in turn, realising our vision to support millions of the world’s poorest people by helping them to transform their own lives through water and soil conservation in drylands.

  • The challenge

    The challenge

    Find out what are drylands, why they are they are such harsh regions to live, how sand dams are applicable in drylands and what difference they can make to over 40% of the world's land surface.

  • Act Now: Tackle Food Crisis With Sand Dams

    Act Now: Tackle Food Crisis With Sand Dams

    Support dryland communities to overcome food shortages, and ensure they can grow enough food to eat and sell. It all starts with ensuring they have access to water. That’s where sand dams come in.

  • Sand dam manual

    Sand dam manual

    For everything you need to know about building sand dams, click here to read (and download for free!), Sand Dams: A Practical & Technical Manual.

  • Our approach

    Our approach

    Find out more about Excellent's approach, from working with self-help groups to why we partner we on-ground, local organisations.

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Registered in England & Wales No. 4432166. Registered charity No. 1094478

Sand Dams Worldwide, 82 Tanner Street, London SE1 3GN, United Kingdom

Registered Isle of Man charity No. 1147. Registered Isle of Man company No. 128231C

Sand Dams Worldwide IOM, Isle of Man, 1 Windsor Road, Douglas, Isle of Man IM1 3JX

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