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Yashi Gautam
Assistant program Lead

JalKalp Biosand Filter Training Workshop in Feb 2023, Gurgaon, India

Sehgal Foundation and CAWST are committed to building access to safe drinking water at the point of use through Capacity Building. 

"JalKalp" Biosand Filter is a low-cost sustainable household water treatment technology that addresses arsenic, iron, manganese, turbidity and microbial contamination. 

Interested in learning about JalKalp Biosand Filter? Join the three days training workshop including hands-on experience. 

                                                      Date: Feb 7-9, 2023

                                                   Venue: Gurugram, Haryana

Click here to register for the workshop:

For more details, click here:

If you find this interesting, feel free to share within your contacts, team and network to help the people in need of safe drinking water.

JalKalp to mitigate the risk of life threatening cancer


S M Sehgal Foundation conducted one day training on JalKalp Biosand Filter (a stainless steel innovated model) for Water Aid team and community leaders in Buxar. 42 Water Aid team and community leaders participated in the training.

Many community leaders shared their views about Arsenic prevalence in the area and shared their experience on JalKalp safe drinking water. 

The training aimed towards sustained correct, continuous and consistence use of JalKalp through building the capacity of users and local people about the technology and its operation and maintenance


Eva Manzano
Senior Manager, WASH Services, LAC, CAWST

September 20th: Webinar "Thirty years of the household slow sand filter"

Over the last thirty years, the household slow sand filter has undergone many changes to improve its performance. It’s been used by over 5 million people in 55 low- and middle- income countries to treat their drinking water. How have modifications to the design since the 1990’s made it easier to operate, and increased the likelihood of correct, consistent and continued use in homes?

In this live webinar, postdoctoral researcher @Bárbara Freitas will present a comprehensive overview of the earliest to most recent publications on the slow sand filter design. She’ll be joined by @robert wiens , an expert in the field of household water treatment, with over twenty years of experience with the biosand filter, from design and implementation to addressing factors that keep families using them.

Register to expand your knowledge of the various models currently available, gain insights on design evolutions from peer-reviewed literature, and learn lessons from decades of experience and innovation in the field.

Thirty years of the household slow sand filter

Tuesday, September 20, 2022 | 8 - 9 a.m. MT

Delivered in English, with live translation in Spanish

Register now

Can’t attend live? The webinar will be available on demand. If you register, we’ll send you a link to view the recording. You can also explore the biosand filter in this free resources library hosted by the Centre for Affordable Water and Sanitation Technology (CAWST). In this collection, you’ll find instructional information on how to build, use and maintain a biosand filter,... (More)