In a country where water scarcity and industrial pollution are major concerns, one father-daughter duo is making a significant dent in the problem—one data point at a time. Meet Mansi Jain, a Stanford graduate in Environmental Economics, and her father Rajesh Jain, an IIT-Delhi alumnus. Together, they founded Digital Paani, a startup that's helping big brands like Tata, Britannia, and Coca-Cola treat and manage over 90 million litres of wastewater every single day.

It all began with a shared concern for India’s water crisis. While Mansi was exploring sustainable systems abroad, her father had decades of experience in Indian industries and technology. The glaring inefficiency in how factories and housing societies treated wastewater became the spark for their venture.

Launched in 2021, Digital Paani combines IoT (Internet of Things), AI, and automation to transform the way wastewater treatment plants operate. Most plants in India are either underused or poorly maintained. The result? Contaminated water ends up polluting rivers and groundwater sources. Mansi and Rajesh decided to bridge that gap with real-time monitoring, automation tools, and predictive maintenance systems that are both cost-effective and environmentally sound.

Their innovation isn’t just tech for tech’s sake. Digital Paani empowers industries and housing societies to reduce operational costs, improve compliance with pollution norms, and even reuse up to 70% of treated water. From textile factories in Gujarat to residential complexes in Delhi NCR, their software and sensor-based systems are redefining wastewater management across sectors.

One of their biggest wins has been getting industry giants like Tata and Britannia onboard. These partnerships not only validate their solution at scale but also ensure that millions of litres of water are reclaimed daily, reducing the burden on freshwater sources.

In just a few years, Digital Paani has grown into a trusted water-tech partner, with over 150 installations across India and plans to expand globally. Their mission is clear: to make every drop count, especially the dirty ones.

But beyond the numbers lies a powerful story of intergenerational collaboration. While Mansi brings global environmental perspective and product thinking, Rajesh adds technical depth and a deep understanding of India’s on-ground challenges. Together, they prove that combining modern education with lived experience can create scalable impact.

As the world braces for a water-scarce future, startups like Digital Paani remind us that clean water isn’t a privilege—it’s a responsibility. And sometimes, the solution lies not in reinventing the wheel, but in optimizing how we use what we already have.