Clean water is essential for life to exist, but in many countries such as in India, access to wastewater treatment facilities is limited, and untreated wastewater is released to rivers, lakes and the ocean causing pollution. Johkasou in Japanese language means, purification tank. A Johkasou is a machine which sanitizes impurities contained within wastewater, using the power of microorganisms that occur naturally within the apparatus. Johkasasou has been developed in Japan as a decentralized domestic wastewater treatment facility. It remains one of the best alternatives to wastewater treatment in areas where sewage infrastructure has not yet been improved worldwide. The key highlights of this technology include Long Product Life, high efficiency, modular design, no requirement for a full-time operator, low energy consumption, low maintenance requirement and faster execution without any issues of noise and no foul smell at sites. The system is an integrated septic tank-anaerobic filter-contact aeration-final settling tank and effluent disinfection facility. Daiki Axis Johkasou products have been approved by the government of Japan and are extensively deployed across Japan as a part of the government policy.