Poonam Bir Kasturi built Daily Dump and turned home composting from a fringe idea into an ordinary Indian habit

Most Indian households throw away more than half their daily garbage as wet kitchen waste, the peels and scraps and leftovers that rot in a landfill and leak methane. Poonam Bir Kasturi looked at that and saw something a designer sees before an engineer does: not a technology gap, but a habit nobody had made easy or appealing. Her answer was Daily Dump, a company built around a stack of terracotta pots that let an ordinary family turn its kitchen waste into compost on a balcony. It sounds small. It helped change how a whole city thought about its own trash.

Poonam died in May 2024, at sixty-one. By then India had a nickname for her, the Compostwali, the compost woman, and Daily Dump had grown from one designer’s experiment into a brand, a movement and an idea that other people were free to steal. This is the story of how she did it, and of why she wanted so badly for others to copy her that she handed out the plans.

The designer before the composter

Poonam was an industrial designer, trained at the National Institute of Design in Ahmedabad, India’s most important design school. Design was not a label she picked up later for a pitch; it was how she saw problems. She went on to help found Srishti, the Bengaluru school of art, design and technology, and spent years teaching, which matters because Daily Dump grew partly out of that teaching. She set her students the problem of urban waste, and the prototypes that came out of those studios, tested at the campus and at her own home, were the seeds of what became the Khamba.

That background shaped everything about the company. A waste expert might have started with the chemistry of decomposition. Poonam started with the human being who had to live with the thing: would they keep an ugly plastic bin on a small balcony, would they understand it without a manual, would they feel a little proud of it rather than embarrassed. She was solving for desire and habit as much as for biology, which is exactly the lens most waste solutions were missing.

The problem she chose

She set up Daily Dump in Bengaluru in April 2006. The timing was not accidental. The city was growing faster than its civic systems could cope with, garbage collection was straining, and the landfills on the edge of town were becoming a visible, smelly crisis. Poonam’s argument was that the problem could not be fixed only at the landfill end. It had to be fixed at the kitchen, by getting households to deal with their own wet waste rather than ship it off to become someone else’s.

This was a hard sell in the mid-2000s. Composting carried an image of being smelly, complicated and faintly eccentric, the preserve of the very committed. Poonam decided the job was less about inventing a machine and more about dismantling that belief. The product had to prove, by being used, that composting at home could be clean, simple and even good-looking. If she could change the picture in people’s heads, the behaviour would follow.

The Khamba, and design as persuasion

The product that carried all of this was the Khamba, a set of stacked terracotta pots whose name means pillar. Kitchen waste goes into the top tier and moves down through the stack as it breaks down, so that by the time it reaches the bottom it has become usable compost. Terracotta was a deliberate choice. It breathes, it manages moisture, it looks warm rather than clinical, and it could be made by India’s potters rather than a factory. The object was designed to sit on a balcony without apology.

Around the pot, Daily Dump built the rest of the experience with the same care: clear instructions, remedies for when things went wrong, microbe mixes and accessories, and a tone that treated the customer as a capable adult rather than a hobbyist. The company expanded the range over time, from the home Khamba to larger systems like the Gobble composters for housing societies and communities. The through-line never changed. The design was the argument, and the argument was that this is easy, and you can do it.

The radical part: please copy us

Here is where Poonam did something most founders would find unthinkable. She released Daily Dump’s designs under a Creative Commons licence and openly encouraged people to copy them. The drawings for the terracotta composters were made freely available, and she was glad when potters and makers elsewhere used them to build and sell their own versions. By one account the open approach spawned around a dozen clones in India and a couple abroad, from a maker in Dharavi to a DIY version sold in the United States.

Her logic was that she was not really in the business of selling pots. She was in the business of getting India to compost, and if a hundred copies of her idea did that faster than one protected brand could, that was a win, not a theft. She wanted potters to earn from it and the habit to spread. It is a rare thing to watch a founder measure success by how widely she could be imitated, and it tells you her mission genuinely sat above her margins. She later admitted the openness had a cost, that some people simply equated open source with free, but she had made her trade knowingly.

The business, and a turn on Shark Tank

Idealism aside, Daily Dump was a real company that had to sell things. It did, largely by word of mouth and conviction rather than heavy marketing. By the time it appeared on Shark Tank India’s second season, broadcast in early 2023, the business had served on the order of eighty thousand customers and reported annual sales of roughly 3.75 crore rupees for the 2021-22 financial year. For a bootstrapped, mission-led brand selling terracotta composters, that was a genuine achievement.

On the show, Poonam asked for 80 lakh rupees in exchange for 4% of the company. She left with an offer from Namita Thapar of the Emcure pharma family: 30 lakh rupees for that 4% stake, along with a 50 lakh rupee loan at interest. The deal, and the national television audience, brought fresh attention to a company that had spent close to two decades proving its point quietly. It also surfaced an honest tension Poonam herself acknowledged, that she had led with mission and design and had sometimes wished she had paid more attention to the money, or brought in a partner better suited to scaling it.

Poonam Bir Kasturi’s net worth, and the better measure

People search for her net worth, so let us be straight about it. There is no credible public figure. Daily Dump was a privately held, bootstrapped company, its ownership was never disclosed in any way that allows a real estimate, and the numbers that float around attached to her name are guesses. After the Shark Tank round her stake in the business was clearly worth something, but putting a rupee value on a private founder’s holding is speculation, and for someone who has passed away it is also beside the point.

The measure that actually fits her is a different one. Tens of thousands of households composting their own waste. A city that started talking seriously about segregation and home composting partly because she kept insisting it was possible. A generation of designers and entrepreneurs who saw, in Daily Dump, that you could build a business around doing good without pretending wealth was the scoreboard. She was recognised for it in her lifetime, including as a Social Entrepreneur of the Year by the World Economic Forum’s Schwab Foundation and with a Lexus Design Award for design thinking. That is the ledger that counts for the Compostwali.

What Poonam Bir Kasturi’s story teaches founders

The first lesson is that behaviour change is a design problem, not only an engineering one. Poonam’s insight was that India did not lack composting technology; it lacked a version of it that ordinary people wanted to live with. Plenty of hard problems, in health, in money, in the environment, are stuck not because the solution does not exist but because nobody has made it easy and appealing enough to adopt. That gap is where a designer-founder can do unusual good.

The second is about holding your mission above your moat. Giving away your designs is not advice that works for every company, and Poonam was clear-eyed that it cost her something. But her willingness to be copied, so the habit would spread, is a powerful reminder to be honest about what you are really trying to achieve. If the goal is genuinely impact, sometimes the fastest route is to let go of control and let the idea run.

The last lesson is the one she named herself, and it is generous of her to have said it out loud. Mission and money are not enemies, and a founder who cares about the first still has to respect the second. She wished she had brought more financial discipline and the right scaling partner to the work sooner. For every mission-led founder who assumes the numbers will sort themselves out because the cause is good, that is a hard-won piece of wisdom worth keeping.

Frequently asked questions about Poonam Bir Kasturi and Daily Dump

Who was Poonam Bir Kasturi?

Poonam Bir Kasturi was an Indian industrial designer and social entrepreneur, trained at the National Institute of Design, who founded Daily Dump in Bengaluru in 2006 to make home composting mainstream. Widely called India’s “Compostwali,” she also helped found the Srishti design school. She died in May 2024, aged 61.

What is Daily Dump?

Daily Dump is a Bengaluru-based design-led composting company. Its signature product is the Khamba, a stacked terracotta home composter that turns kitchen waste into compost, and its range extends to community and bulk composters, microbes and accessories. Its mission has always been to make composting at home easy, clean and ordinary.

What is the Khamba?

The Khamba (meaning “pillar”) is Daily Dump’s stacked terracotta home composter. Kitchen waste is added to the top tier and moves down through the stack as it decomposes, producing usable compost at the bottom. Terracotta was chosen because it breathes, manages moisture, can be made by local potters and looks good enough to keep on a balcony.

Why did Daily Dump let people copy its designs?

Poonam Bir Kasturi released the composter designs under a Creative Commons licence and encouraged people to copy them, because her real goal was to get India composting, not to protect a product. The open approach reportedly inspired around a dozen clones in India and a couple abroad. She acknowledged it had costs, since some people equated open source with free.

What happened on Shark Tank India?

Daily Dump appeared on Shark Tank India season 2 (2023). Poonam asked for ₹80 lakh for 4% equity and secured an investment from Namita Thapar: ₹30 lakh for 4%, plus a ₹50 lakh loan. At the time the company reported around 80,000 customers and roughly ₹3.75 crore in FY22 sales.

What is Poonam Bir Kasturi’s net worth?

There is no verified public net-worth figure. Daily Dump is a privately held, bootstrapped company with undisclosed ownership, so any number online is a guess. Her real legacy is measured in the tens of thousands of households composting at home and the shift she helped drive in how Indian cities think about their waste.