There was a solicitation from a contractor. Do I need to request inspection and cleaning of the drainage system?

The drainage facilities (drain pipes, masu, etc.) in the residential land are cleaned and managed at the owner's responsibility, but as long as they are used normally, they are unlikely to clog or break.

Drainage outlets in kitchens, washrooms, bathrooms, washing machines, etc. regularly, and open the lid on the outdoor “masu” and regularly clean clogged garbage and fallen leaves. By doing so, drainage flows smoothly.

In the unlikely event that a problem occurs, please consult the "Yokohama City Drainage Designated Construction Shop" designated by Yokohama City.

In addition, please note that there is an inspection commercial law that inspects drainage facilities in residential land that is not necessary, charge an unreasonable price, and sells chemicals and equipment.

For sewer construction that Yokohama-shi performs, when the staff and contractor of city asks for inspection and investigation in residential land, we show identification card.
When you feel suspicious, please refer to sewer River Bureau Sewer Management Division (telephone 671-2830) or each ward Public Works Office (outside site).

In addition, "Yokohama-shi pipe construction cooperative (telephone 681-6631)" which is business group in Yokohama-shi introduces member of the union (Yokohama-shi drainage designation construction shop) of the union. (Reception hours 8:30-17:00) However, the union will only introduce you. Please consult directly with the designated drainage facility designated construction shop for consultation on the contents and costs of construction.