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Toilet and Sewer

Last Updated November 6, 2024

Clogging and repair of drainage pipes

  • Cleaning and management of drainage pipes in residential lands is to be performed by the owner.
  • As long as you use it normally, it rarely gets clogged or broken.
  • Ask the landlord or caretaker about apartments and apartments.

Beware of the Commercial Code of Sewage Inspection

An inspection commercial law has been issued to perform unnecessary inspections of drainage pipes in residential lands, claim unfair prices, and sell chemicals and equipment.
If you are advised to check or repair drainage pipes, refuse if not necessary.
If you feel suspicious, please check the name of the trader, the name of the person in charge, and contact information, such as by showing your employee ID card, etc., and consult with the Public Works Office of each ward. (Japanese only)

Sewerage usage fee

For those who use tap water at home or office and drain to the public sewer, we request a sewerage usage fee for each meter reading of the water meter to be performed once every two months.

As billing is done with sum added to water rate, you have you confirm "meter reading vote" to hand at the time of water meter reading, and "payment notice payment" please pay within deadline I will.

In addition, when draining to the public sewer without using tap water (wells, etc.), it is necessary to pay the sewerage fee, so please contact the Sewerage River Bureau Accounting Section (see the following reference) .

Sewerage fee calculation table

<Example of calculation>
Sewerage usage fee (excluding tax) in case of discharge (2 months) 30m3
118 yen (amount per 1m3 of 21 to 40m3) x 30m3-1,020 yen = 2,520 yen

General sewage sewerage system usage fee calculation table (2 months)
Emissions (2 months) Per 1m3 Calculation formula
0~16㎥ - 1,260 yen (basic amount)

17~20㎥

20 yen 20 yen x water volume +940 yen
21~40㎥ 118 yen 118 yen x water volume -1,020 yen
41~60㎥ 173 yen 173 yen x water volume -3,220 yen
61~100㎥ 234 yen 234 yen x water volume -6,880 yen

※This is the amount excluding tax.
※Please contact the Sewerage River Bureau Accounting Section (see the following reference) for unit price of 100m3 or more.
※Please see "Revised water rates" for water rates.

When not using public sewers (sewage pipes, confluence pipes)

If you use tap water and do not discharge it to the public sewer at all, you may not be eligible for collection of sewerage usage fees. Specifically, please contact sewer River Bureau accounting section (refer to the following reference).

Notification and consultation of septic tanks

  • When we install flush toilets in area where public sewer is not maintained, setting procedure of septic tank is necessary.
  • Please submit registration form when the manager changes due to moving or when the septic tank is abolished.
  • Those who manage septic tanks are required to undergo maintenance and inspection, septic tank cleaning, and legal inspections.
Contact information
Contents Contact information
Pay attention to the commercial law of clogging / repair of drainage pipes / inspection of sewage

Sewerage River Bureau Sewer Management Division (* Japanese only)

Telephone: 045-671-2830

Fax: 045-641-5330

Email address: gk-kanrohozen@city.yokohama.lg.jp

Sewerage usage fee

Accounting Section of the Sewerage River Bureau (* Japanese only)

Telephone: 045-671-2826

Fax: 045-663-0132

Email address: gk-shiyou@city.yokohama.lg.jp

Notification and consultation of septic tanks

Resources and Waste Recycling Bureau Business Waste Management Section (*Japanese only)

Telephone: 045-671-2547

Fax: 045-663-0125

Email address: sj-jokaso@city.yokohama.lg.jp


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