The sanitation crisis isn’t waiting.
Today, 3.5 billion people — nearly half the world — still lack access to safe sanitation. This threatens their health, dignity, and future.

WithMasters aims to bring safe, regenerative sanitation anywhere. We transform wastewater into clean, reusable water without sewers, sludge hauling, or chemicals, using an onsite system that redefines what sanitation can be.

WithMasters was founded in 2022 by Jongho Kim, former President and CMO at Samsung, with a mission to solve long-standing global challenges.

In 2024, we asked a bold question: What if sanitation could work anywhere — off-grid, chemical-free, and future-ready? That question inspired us to design and prove the world’s first onsite regenerative sanitation system, built to meet international standards and ready for real-world deployment.

Our technology combines biological treatment, advanced membrane filtration, and solid processing. The result is over 95% water reuse, while sludge is converted into harmless, odorless ash. We’ve already installed and operated OLO in a real household, and we’re just getting started. Next, we’re scaling our impact from individual homes to remote communities, and even to water-intensive industries.

Access to safe water and sanitation is not a privilege. It is a human right.
And we're building the technology to make that right a reality anywhere in the world.

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WithMasters Official

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