With Masters

With Masters Inc. is a South Korean company specializing in sanitation innovation through the development of eco-friendly, sewage-free toilets. Led by CEO Kim Jong-ho, the company focuses on creating Household Reinvented Toilets (HRTs) that function without traditional sewage infrastructure, addressing critical sanitation needs in underserved regions and developing countries.

The company has gained international recognition through a significant partnership with the Bill & Melinda Gates Foundation, which has committed US$8.55 million to the project. This funding, part of a 15-month project announced in June 2025, aims to enhance the affordability, reliability, and scalability of the HRT technology to combat waterborne diseases. The HRT system incorporates technologies such as sedimentation, oxygen aeration, microbial decomposition, and filtration. CEO Kim Jong-ho brings extensive experience from his tenure at Samsung Electronics, where he was a president and head of the Global Quality Innovation Office and developed a 100% wastewater recycling technology that was later adapted for public health programs by the Gates Foundation.

With Masters is comprised of a team of experts, including innovation and manufacturing technologists, designers, and social scientists, with deep industry knowledge in IT, electronics, and biotech. The business operates in the professional, scientific, and technical services sector, with a focus on R&D for wastewater purification systems.

Keywords: sanitation technology, sewage-free toilets, Household Reinvented Toilet, HRT, water purification, eco-friendly sanitation, global public health, wastewater recycling, sanitation innovation, waterborne disease prevention, Bill & Melinda Gates Foundation, sustainable sanitation, off-grid toilets, developing countries sanitation, water treatment, microbial decomposition, filtration systems, Kim Jong-ho, water, hygiene