Government office
| Ministry of the Environment |
| Ministry of the Environment johkasou site |
| Ministry of the Environment Children's Page |
| Environmental learning station |
| Verification of Environmental Technology |
| Ministry of Land, Infrastructure, Transport and Tourism |
| Ministry of Agriculture |
| Ministry of Internal Affairs and Communications |
| Ministry of Health, Labor and Welfare |
Government institutions and academic societies
| National Institute for Environmental Studies |
| National Research and Development Corporation Building Research Institute |
| Public Works Research Institute, National Research and Development Corporation |
| Saitama Environmental Science International Center |
| Kanagawa Prefectural Institute of Public Health |
| Local Incorporated Administrative Agency Osaka Institute of Public Health |
| Japan Society on Water Environment |
| Japan Society of Waste Management and Recycling |
| United Nations Industrial Development Organization Tokyo Investment and Technology Promotion Office |
| Japan Sanitation Consortium |
Corporate organizations, etc.
| johkasou system association |
| National johkasou Promotion Municipal Council |
| National Federation of Environmental Improvement Business Cooperative Associations |
| National Federation of Municipal Solid Waste Environmental Improvement Cooperative Associations |
| National Federation of Johkasou Organizations |
| Regional Environmental Resources Center |
| Japan Environmental Sanitation Center |
| Building Center of Japan |
| Japan Industrial Waste Promotion Center |
| Japan Environmental Conservation Association |
| General Incorporated Association Waste Treatment Facility Technology Management Association |
| Waste and 3R Research Foundation |
| Public Interest Incorporated Foundation Japan Building Hygiene Management Education Center |
