About exemption of drainage installation obligation, permission of drainage connection exception

In Yokohama City, permission based on the proviso of Article 10 of the Sewerage Law (exemption of drainage installation obligations) and Article 3 of the Yokohama City Sewerage Ordinance
About permission (permission of drainage system connection exception) based on Clause 1 second proviso, other than Yokohama-shi sewer regulations enforcement regulations, the point
It has been decided.
For more information, please refer to the following link.
[From April 1, 2025] The water quality standards of the "Office Administration Guidelines for Exemption of Drainage Equipment Installation Obligation" and the "Office Administration Guidelines for Permission of Drainage Equipment Connection Special" will change.

[Until March 31, 2025]
Office work handling guidelines (PDF: 287KB) regarding exemption of drainage installation obligations
[From April 1, 2025]
Administrative procedures related to the exemption of drainage installation obligations (PDF: 290KB)

[Until March 31, 2025]
Office work handling point (PDF: 288KB) about permission of drainage connection exception
[From April 1, 2025]
Office work handling guidelines (PDF: 290KB) regarding permission for drainage connection exceptions