- (Video)Installation work of Factory-produced johkasou［YouTube］
- (Video)Operation and Maintenance, and Desludging of Johkasou［YouTube］
- Night Soil Treatment and Decentralized Wastewater Treatment Systems in Japan
- Disaster Countermeasures for Johkasou
- Johkasou Act (Tentative Translation)
- Asia Wastewater Management Partnership (AWaP)
- (Video)Japan's Johkasou system ［YouTube］
- Protection of People’s Health and the Water Environment (English Brochure)［PDF 2.89MB］
- Characteristic of Johkasou (English Brochure)［PDF 5.0MB］
- Specification on the Institutional System and Technologies Related to Johkasou Operation and Maintenance (draft)［PDF 844KB］
- Japan’s Challenge for the Environmental Sanitation［PDF 1,298KB］
