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Water for All

Affordable, electricity-free and zero waste water purifiers

August 2021

Water for All

Affordable, electricity-free and zero waste water purifiers

  • World Alliance Member
  • Featured Solution
  • Labelled Solution
Label Date August 2, 2021
From India
Maturity stage TRL 9 / CRI 5-6 - Market competition driving widespread deployment &/"Bankable" grade asset class

Watsan Water Purifier aims to use technology as a fulcrum for providing the most affordable and effective drinking water and sanitary solutions. It works on nano-filtration, thus need no electricity, no maintenance, nor change of parts. They retain 100% of the input water and convert them into potable water, hence there is no wastage of water.

The Environmental Benefits

  • The filtration happens through nano-percolation
  • Long lasting nano-filter medium (more than 11 years) compared to other purifiers which lasts 1 or 2 years.
  • Zero water wastage purifier which saves almost 28,000 litres of water
  • Zero electricity needed to run the purifier, so saves 50 KW per year per purifier
  • Does not discharge any residues in the environment

The Financial Benefits

Target client profile


Activity Region

  • Headquarters
  • Activity

Company Profile

Watsan Envirotech Pvt Ltd

Watsan makes and distributes affordable, electricity free, maintenance free, zero water wastage water purifier targeting the BPL families and rural villages across globe who do not have access to clean drinking water. We make arsenic and fluoride removal add-ons as well. We also provide ready to fit toilets as a turnkey solutions, which were built completely using glass fibre waste, devoid of sand , water and cement to build it.

Headquarters Chennai, Tamil Nadu 600003, India
Type Startup or self-employed
View company profile Solution website

Networking Partner


Waterpreneurs is a global “for-impact organisation”, supporting the scaling-up of impact investments financing the growth of WASH enterprises operating in developing countries, and respecting human rights. Waterpreneurs brings extensive knowledge of the water and sanitation entrepreneurial sector, impact investing and facilitation of marketplaces.

Solutions Associated 29
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The Green Startups Accelerator

The Green Startups Accelerator is a Beijing-based environmental NGO and WRI, a U.S. based environmental think tank to promote green entrepreneurship in China

Solutions Associated 8
View partner profile

New Energy Nexus

New Energy Nexus (NEX) is a global nonprofit that supports diverse climate & energy entrepreneurs to accelerate the transition to 100% clean energy for 100% of the population.

Solutions Associated 9
View partner profile

Cleantech Group

The Cleantech Group is a company that supports the development and marketability of clean technologies. The Cleantech Group provides members of its Cleantech network access to capital, investors, research and promotional opportunities. The group also provides advisory services for large corporations and governments. Founded in 2002, the Cleantech Group owns the term "cleantech" as a registered trademark.

Solutions Associated 49
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The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator Watsan Envirotech Pvt Ltd has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.