Sakae Public Works Office Sewage does not flow

Water in the kitchen and bath does not flow
Only the toilet is clogged
In such a case, the drainage system in the residential land may be clogged. The drainage facilities in the residential land will be managed by the resident. Please consult with the contractor at the time of construction. If you are unsure, please consult the Yokohama City Pipe Works Cooperative Association (telephone 045-681-6631), which is a business group in Yokohama.
If all sewers in the residential land do not flow, please contact Public Works Office as the public sewer may be clogged.

Construction cannot be done unless it is a designated construction shop in Yokohama City. Look at list of Yokohama-shi drainage designation construction shops (outside site) (we link to Yokohama-shi sewer River Bureau) or please talk with Yokohama-shi pipe construction cooperative (telephone 045-681-6631).

Yokohama Drainage Equipment Designated Construction Shop
In Yokohama City, construction shops that can perform drainage construction and flushing work are designated as "Yokohama City Drainage Designated Construction Shops" (hereinafter referred to as "designated construction shops").
Drainage equipment construction: Construction of drainage facilities for draining sewage from toilets, kitchens, bathrooms, etc. and rainwater into the sewer
Washing work: Remodeling the toilet into a flush toilet
In Yokohama-shi sewer regulations Article 32 (outside site), "we cannot perform construction such as new construction of drainage facilities and remodeling work of Kumitori toilet to flush toilet in treatment area unless it is person designated by the mayor. " As it is stipulated, be sure to ask designated construction shop for drainage construction.

[Reference] About the sewer