What should I do about human waste treatment?

For the treatment of night soil, information is provided at each contact information, such as temporary toilet, septic tanks, and flush toilets that flow into public sewers.

temporary toilet is installed at the Northern Resources and Waste Recycling Bureau Office for construction, construction sites, outdoor events (event-related companies) and local events.
The processing fee is 3,000 yen per toilet bowl.
For details on procedures, please contact the Northern Resources and Waste Recycling Bureau Office.

Northern Resources and Waste Recycling Bureau Office
TEL 045-953-0941

About temporary toilet collection of human waste

（１） General inquiries regarding the installation and maintenance of septic tanks
　Resources and Waste Recycling Bureau Business Waste Management Section
　TEL 045-671-2547

（２） Introduction of septic tank maintenance and inspection contractors
　(Public Corporation) Kanagawa Prefectural Lifestyle Mizuho Zenkai
　TEL 045-830-5720

（３） Septic tank cleaning request
　List of licensed septic tank cleaning business

（４） Application for septic tank statutory inspection
　・Those who live in Tsurumi, Kohoku, Green, Aoba or Tsuzuki Ward  
　(one good fortune) Japan Environmental Sanitation Center
　TEL 044-288-5225

　・If you live in a ward other than the above, please.
　(Public Corporation) Kanagawa Prefectural Lifestyle Mizuho Zenkai
　TEL 045-830-5721

https://translate-en.city.yokohama.lg.jp/kurashi/sumai-kurashi/gomi-recycle/shinyo/jokaso/

Public sewerage is carried out in Public Works Office of each ward.

List of Public Works Office in each ward

・I would like to ask you to collect the temporary toilet (construction site and event venue).
・I'd like to clean the septic tank. Could you tell me?
・I would like to abolish the toilets and septic tanks and wash them with water.