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Leadership Team

WaterSpark is made up of a unique mix of entrepeneurial, financial, technical and commercial expertise. We leverage the diverse background to add maximum value.

Management team

For more than a decade Annelies has leveraged her passion to build initiatves & strategies to accelerate the water innovation ecosystem. Annelies has held strategic management positions in an international landscape within the water industry and startup ecosystem. Most recently, Techleap.NL, PureTerra, Isle Utilities, WaterAlliance & Aquatech


Annelies Schenk

Partner WaterSpark

Mirjam is a pragmatic and result driven marketing communications specialist. She has a long track record working in brand management for large corporates. She travelled the world to organizing conferences, exhibitions pavilions & virtual events for IWA & NWP


Mirjam Van Buchem

Partner WaterSpark

Anchor Friends

Will is an internationally recognized thought leader on water strategy and innovation. He has been a sustainability & water strategy advisor to multinationals, water technology companies and NGOs for his entire career. Will works with multinationals on corporate water strategies, water technology innovation and water market entry strategies.


Will Sarni

Water foundry

Alex is Managing Director of PureTerra Ventures. He has over 25 years’ experience in commercial and technical roles in a wide range of technologies and markets in the global water and wastewater sector. Alexander has held executive positions leading commercialisation for PE backed water technology start-ups such as Voltea and NewTerra


Alexander Crowell

PureTerra Ventures

Piers Clark is the founder and chairman of Isle Utilities. Piers was previously the MD for the PE fund Global Water Development Partners (GWDP). From 2010-14 he was the Commercial Director at Thames Water. Prior to joining Thames Water, Piers was MD for Mouchel. Piers is a board director for Modern Water plc and OzoInnovations.


Piers Clark

Isle Utilities

Gijs developed several businesses since 1998 in China most outstanding the largest water Environmental (water&waste) B2B platform (Aquatech China/WieTec). Gijs maintains an extensive network in the water industry. He is the purebred entrepreneur, with a constant drive to bring unique business models to the next level.


Gijs de Bruin

98 Sparks

Our latest involvement

The Future is Water – Use the power of sport to make impact

The Future is Water (TFIW) is an initiative of the Royal Dutch Water Sports Association and sports marketing agency TIG
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Isle’s Water Action Platform – Learning and best practices

The Water Action Platform is an initiative launched by Isle. Isle’s Water Action Platform provides a forum for the sharing
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Rabobank Masterclass – Value of Water

Together with our alliance partner PureTerra, we have organized a masterclass for executives & relationship managers within Rabobank. They want
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