Kanagawa Public Works Office "Frequently Asked Questions - About Sewerage and Waterways"

In the case of "only the toilet is clogged" or "water does not flow only in the kitchen or bath", the drainage system in the residential land may be clogged. The drainage system in the residential land will be managed by the owner.

If you cannot solve it due to cleaning and need repair, etc., please consult a Yokohama City Drainage Equipment Designated Construction Shop.
You can search for designated construction shops at Yokohama City Drainage Equipment Designated Construction Shops (lists).
In addition, "Yokohama-shi plumbing cooperative (outside site)" which is business group in Yokohama-shi introduces union members (Yokohama-shi drainage designation construction shop).
Yokohama City Pipe Works Cooperative Telephone: 045-681-6631
Reception hours from 8:30 to 17:30 (except Saturdays, Sundays and public holidays, December 29 to January 4) However, the union will only introduce it. Please consult directly with the designated drainage facility construction shop for consultation on the contents and costs of the construction.

If all sewers in the residential area do not flow, please contact Public Works Office as public sewers may be clogged.
Kanagawa Public Works Office Telephone: 045-491-3363

Sewage pipe flushing work must be a designated construction shop in Yokohama City.
You can search for designated construction shops at Yokohama City Drainage Equipment Designated Construction Shops (lists).
In addition, "Yokohama-shi plumbing cooperative (outside site)" which is business group in Yokohama-shi introduces union members (Yokohama-shi drainage designation construction shop).
Yokohama City Pipe Works Cooperative Telephone: 045-681-6631

Reception hours from 8:30 to 17:30 (except Saturdays, Sundays and public holidays, December 29 to January 4) However, the union will only introduce it. Please consult directly with the designated drainage facility construction shop for consultation on the contents and costs of the construction.

It may cause road flooding or flooding during heavy rains. Please contact Public Works Office.
Kanagawa Public Works Office Telephone: 045-491-3363

Please contact Public Works Office.
Kanagawa Public Works Office Telephone: 045-491-3363

In principle, it is necessary to put sewer pipes in private roads at the expense of the user, but if certain conditions are met, use the system of "private road measures contracted sewerage construction" or "subsidy for joint drainage construction". If you use it, Yokohama City will install a sewer pipe on behalf of the user or grant a subsidy for the construction performed by the user.
　For an overview of the system, please refer to "Private Road Measures Contract Sewerage Work" and "Subsidies for Joint Drainage Work".

Inspection and commercial law has been issued to inspect drainage facilities in residential lands that are not needed, request unreasonable prices, and sell chemicals and equipment. If you feel suspicious, please contact the Sewerage River Bureau Sewer Management Division or Public Works Office.
Sewerage River Bureau Sewer Management Division Phone: 045-671-2830
Kanagawa Public Works Office Telephone: 045-491-3363
"Is it necessary to request inspection and cleaning of drainage facilities?" (Sewerage River Bureau)

"Please be careful about the" inspection and commercial law "of sewage and drainage facilities" (Sewer River Bureau)

The waterways in the ward are managed by Public Works Office. Please inform Public Works Office of the location and situation.
Kanagawa Public Works Office Telephone: 045-491-3363

The waterways in the ward are managed by Public Works Office. Please inform Public Works Office of the location and situation.
Kanagawa Public Works Office Telephone: 045-491-3363

At present, if it is a waterway that does not function as a waterway and cannot be used alone, and there is no possibility that it will be used for public purposes such as public roads in the future, it can be paid off.

If you wish to pay, you will be required to submit a request for a preliminary survey of waterway renovation and abolition and a drawing such as a public map or guide map to the section in charge, but the situation of nearby land etc. The required range and type of drawings will vary depending on individual cases, as it will affect the situation. Please refer to sewer River Bureau river management section beforehand.
River Management Division, Sewerage River Bureau Telephone: 045-671-2856