Geographers’ design to provide water for residents in India wins Cambridge award

Year 13 students Ishaan Bhandari and Laksh Aggarwal enter their final few months at QE bolstered by a win in a Cambridge competition.

The pair triumphed in the Most impactful category in the Homerton College Design Programme 2025, which challenged entrants to “design a sustainable solution to any environmental or health problem that we are facing”.

Ishaan and Laksh’s entry looked at the provision of water in informal settlements such as Mumbai’s Dharavi, sometimes known as the biggest slum in Asia.

Deputy Head (Academic) Anne Macdonald said both Ishaan and Laksh are “excellent and keen geographers”, adding “Ishaan is an aspiring engineer and Laksh an economist – both brought their expertise from those areas to the design.

“Their design was judged to be ‘most impactful’ because – as excellent geographers and holistic thinkers – they considered carefully the design context.  The water solution needed to work for people living in crowded, informal settlements, where government provision of basic infrastructure including water and electricity is often lacking.

“In designing a low-tech solution that: could be used and maintained by individuals; was distributed by NGOs [non-governmental organisations]; and was low-cost and sustainable in its material and energy use, they successfully (and impressively) hit the ‘impactful’ brief.”

The pair intended their solution to be provided to individuals via NGOs, rather than to governments.

The competition rules stipulated that each entry should:

• Have a hypothetical budget of no more than £20,000
• Take up no more than 10m x 10m of space
• Follow a four-stage structure – identifying the problem; looking at possible solutions; choosing the best solution; and explaining how it could be implemented.

To assist entrants, a series of webinars led by Homerton College staff and fellows was held.

After creating a presentation and video, Ishaan and Laksh were shortlisted and invited to a celebration event along with about 100 other shortlisted entrants.

At the event, students were invited to a panel discussion of experts titled Building a Sustainable World whilst maintaining the Health and Wellbeing of global citizens, chaired by Homerton Principal Lord Simon Woolley (pictured top taking a group selfie at the event), who was the guest speaker at QE’s 2024 Valediction ceremony.

Ishaan and Laksh individually received certificates and, together, a wooden plaque.