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Application for confirmation of drainage facilities

Last Updated February 15, 2019

Outline of application for confirmation of drainage equipment plan

Drainage equipment is a facility for drainage that you maintain and manage.
If you look at the ground around the building (easy to find in a newly built house for sale), there are lids made of concrete or vinyl chloride (it may be a square iron lattice lid for rainwater only). Is called "masu" of drainage equipment. Basically, it is connected by a pipe, and at the end it is connected (made of concrete) to the public sewer.

It is your duty to provide drainage facilities, and before the maintenance of the drainage system requires The Mayor of Yokohama to confirm that the plan complies with laws and regulations concerning the installation and structure of drainage facilities.
What you create to obtain confirmation is the "Drainage Equipment (wash toilet remodeling) plan confirmation application".
In the case of detached houses, the application will be submitted to Public Works Office.
The application form includes "original" and "duplicate", and after confirmation, the "duplicate" stamped with the confirmed seal will be returned to the applicant.
Construction of drainage facilities can only be performed by a designated construction shop for drainage facilities. (The designated construction shop posts a “Drainage Designated Construction Shop Certificate” in an easy-to-see place of the sales office.)

When preparing the application documents for confirmation of drainage facilities, please read the "Yokohama City Drainage Equipment Manual" carefully and contact Public Works Office or Environmental Planning Bureau Sewer Management Division.

Legal basis for “Application for Confirmation of Drainage Equipment Plan (Execute)”

When public notice (notification) of service start is made, there is duty to install drainage equipment according to Article 10 of the Sewerage Law and connect to public sewage.
Next, those who intend to install drainage facilities must receive confirmation as to whether the plan complies with the provisions of laws and regulations concerning the installation and structure of drainage facilities. (Sewerage Ordinance, Article 4)

Confirmation application procedure for confirmation of drainage equipment plan (exclusion confirmation)

Please refer to the following link from application to completion of examination.
(The submitted “exclusive” documents will be generally reviewed in accordance with this procedure.)

Procedure to change the confirmation of drainage facility plan

Person who is going to perform new construction such as drainage facilities must receive confirmation of "exclusion" according to rule of regulations Article 4. If you want to change the confirmed matter, please get the same confirmation.

If you want to change the drainage area or drainage system after receiving "exclusion", create a new "exclusion" and fill in the remarks column with the original confirmation number and the reason for the change in the remarks column. Please receive confirmation again with a duplicate of "exclusion".
However, other minor changes may be substituted by correcting the duplicate item of "exclusion".

Completion procedure for confirmation of drainage facility plan

Please submit a “Completion Notification” within 5 days from the date on which the construction is completed (submit to each Public Works Office).

Inspection of drainage equipment plan

Anyone who intends to construct a new drainage system, etc. should receive confirmation as to whether the plan conforms to the provisions of laws and ordinances related to the installation and structure of drainage facilities according to Article 4 of the Ordinance. There is no provision for the inspection.
However, this will be done if the inspection is stipulated by law or regulations.

Types of Inspection and Legal Basis
Construction nameTarget personLegal basis for inspection
Remodeling of flush toilets
(Construction of human waste septic tank)
Those who have received subsidies and loansYokohama Toilet Equipment Fund
Grant loan rules
Article 9
Article 22
Self-financed construction
When an inspection is requested
Mutatis mutandis of the above rules
Inspection of other drainage facilities
(Including specific facilities and abatement facilities)
Installers or owners of drainage facilitiesArticle 13 of the Sewerage Law
In order to preserve the functions and structures of public sewers, or to make the quality of the effluent a technical standard, it is possible to on-site inspections of other people's land or buildings to the extent necessary (excerpt).

Precautions associated with submitting a plan confirmation application for drainage facilities

Regarding the connection and mounting pipes, consult with Public Works Office in advance before applying for confirmation of drainage equipment plan.

  1. When the connection masu on public roads is required.
  2. When the existing mounting pipe is repaired or insufficient diameter.
  3. When installing a connection masu on a public road.
  4. When connecting and mounting pipe is newly installed.

attached documents of the application for confirmation of drainage facilities

The books attached to the drainage system (wash toilet remodeling) plan confirmation application (hereinafter referred to as “plan confirmation application”) to be submitted to the Public Works Office of each ward are generally as follows. In addition, please read Yokohama-shi drainage equipment handbook (P37) well for details.

(1) Based on drainage area and drainage population

Table
AttachmentsScaleClassification
Drainage population of less than 1,000Drainage population of 1,000 or more
Drainage area of less than 400 square metersDrainage area of 400 square meters or more
Drainage area less than 1500 square meters
Drainage area of 1500 square meters or more
Schematic diagram (guide map)Appropriate (Specify directions from bus stop, bridge, "Koban" (police box), school, etc.))
Layout plan (plan)In principle, 1/400 or more
Longitudinal ViewThe side is the same as the layout drawing. The length is more than 10 times the width.
Floor plan for drainage area divisionAccording to the layout drawing.---
Calculation table for area etc.---------
Flow flow table---------

(2) In the case of installation of underground drainage tanks

(1) Detailed view of the underground drainage tank (floor plan, longitudinal view)

(3) When the installation location is related to development activities

(1) A copy of the drainage area division plan attached at the time of discussions on development activities, etc.

Application download

Application form for confirmation of drainage equipment plan

For inquiries to this page

Midori Ward Green Public Works Office

Phone: 045-981-2100

Phone: 045-981-2100

Fax: 045-981-2112

Email address: md-doboku@city.yokohama.jp

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Page ID: 280-582-054

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