Q3-4 What should I do with the end of the drainage facility?

As a general rule, it is necessary to discharge directly to existing public sewers or rivers outside the application area, but if it is difficult, you may go through private drainage facilities. In this case, be sure to obtain the consent of the owner of the neighboring land before applying for permission (note that the city cannot take responsibility, not the conditions of permission.) 。

Summary of Guides, etc. on this answer

• About end treatment of surface water
  “Guide to Residential Land Development” Part 3, Chapter 5, 3

Contact for inquiries regarding this answer

• Examination of standards for drainage facilities
  Environmental Planning Bureau Development Coordinating Section Drainage Facility Consultation Section
• About permission of construction about residential land development
  Housing and Architecture Bureau Residential Land Examination Department

For specific details in a specific location, please contact the person in charge of each area.