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Will has been providing environmental and sustainability consulting services to private- and public-
sector enterprises for more than three decades, with a
focus on developing and implementing corporate
wide sustainability strategies, as well as broad based climate and water programs. Sarni’s diverse client 
list includes Fortune 500 companies, multinational  corporations and non- governmental organizations (NGOs). He has managed complex projects throughout the United States, Europe and Asia, working with some of the world’s most recognizable companies.


An internationally recognized thought leader on 

sustainability and corporate water strategies, Sarni is a frequent speaker for corporations, conferences and universities, as well as a columnist on sustainability and water strategies for GreenBiz. He is the author of Corporate Water Strategies (Earthscan 2011,) and Water Tech - A Guide to Innovation, Investment and Business Opportunities in the Water Sector (Routledge 2013). He is currently working on a DoShorts book book on the energy – water – food nexus.


Sarni is a Board Member of the Rainforest Alliance,

an Advisor to, on the Water Leadership group for the WBCSD, on the Water Group for the Business and Industry Advisory Committee (BIAC) for OECD and a member of the Stockholm World Water Week Scientific Program Committee. 


Tamin is CEO of Banyan Water, a private-equity funded company using information technology to reduce water costs and risks for large commercial and institutional customers. He is also Chairman and Co-Founder of Imagine H2O, a global non-profit spurring water entrepreneurship through innovation prizes and a water business accelerator program.


He is a member of the board of directors of Lux

Research, a leading provider of research and

analytics on water and other science-based

innovation markets.


Tamin previously worked as a venture capitalist

at Catamount Ventures, where he invested in tech-

nology and sustainability companies, and as an investor at Goldman Sachs, where he helped launch a new energy subsidiary.


He is a frequent speaker on water business issues. Tamin holds an AB from Harvard University and an MBA from Harvard Business School, where he was

featured in two recent case studies taught on water.

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