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Toilets and sewage services(廁所和下水道)

Last updated date:2020/9/10

Clogging of drain pipes/repair work

- The cleaning and upkeep of drain pipes on residential land is the responsibility of the land owner.
- Drain pipes rarely become blocked or damaged if they are used correctly.
- For more details, please ask your apartment building owner or caretaker.

Beware of fraudsters posing as sewage inspectors!

There have been incidents of fraudsters posing as sewage inspectors to carry out unnecessary inspections of drain pipes on residential land, and charging people unfair sums of money and pressuring them into buying pharmaceuticals or electronic devices.
If someone recommends that you have your drain pipes inspected or repaired, refuse if there is no need for such work.
If you are suspicious about a person's credentials, ask to see a form of identification and for his or her company name and boss' name and contact details, and get in touch with your ward's Public Works Office. (*Inquiries in Japanese only)

Sewage charge

Anyone who uses running water at home or at work and discharges waste water into the public sewage system has their meter read once every 2 months, and is billed for the use of the sewage system.

The sewage charge is included in your water bill, so please check it on the statement you receive after your water meter has been read. If you pay your water bill through payment slips, please ensure to pay by the stated deadline.

Also, anyone who does not use running water (for example, well water) but discharges waste water into the public sewage system is still required to pay the sewage charge. In such cases, please contact the Accounting and Management Division, Environmental Planning Bureau (contact details provided below).

Rates for sewage charges

Rates for sewage charges (2 months)
Discharge volume (2 months) Rate Remarks (Reference) Water bill
0-16㎥ 1,260yen Basic charge 1,580yen
17-20㎥ 20yen Rate per 1㎥ 43yen
21-40㎥ 118yen Rate per 1㎥ 158yen
41-60㎥ 173yen Rate per 1㎥ 226yen

61-100㎥

234yen Rate per 1㎥ 269yen

*These prices do not include tax.
*Please contact the Accounting and Management Division, Environmental Planning Bureau concerning units of 100m3 or more (contact details provided below).

Examples of charges by discharge volume

The sewage charge is to be paid every 2 months, when your water meter is read.
The following is an example using the above table of rates for sewage charges (2 months) to calculate the charge for each actual discharge volume (2 months).

<Example calculation>
In the event that the discharge volume(2 months)is 30㎥(excluding tax)
Sewage charge: 1,260 yen(basic charge)+20 yen(unit of 17-20㎥)×4㎥+118 yen(unit of 21-30㎥)×10㎥=2,520 yen

Rates for sewage charges (2 months) by discharge volume
Discharge volume (2 months) Price (Reference) Water bill
~16㎥ 1,260yen 1,580yen
20㎥ 1,340yen 1,752yen
30㎥ 2,520yen 3,332yen
40㎥ 3,700yen 4,912yen
50㎥ 5,430yen 7,172yen
100㎥ 16,520yen 20,192yen

*These prices do not include tax.

In the event you do not use the public sewage system (waste pipes, junction pipes)

If you use running water but do not discharge any waste water into the public sewage system, you may be exempt from paying the sewage charge. For more details, please contact the Accounting and Management Division, Environmental Planning Bureau (contact details provided below).

Notifications/consultations concerning septic tanks

- For those in areas that are not connected to the public sewage system, please complete the necessary procedures for having a septic tank installed when installing a septic tank to use a flush toilet.
- Please submit notification in the event the manager changes due to moving house, etc., or if discontinuing use of the septic tank.
- It is the obligation of those managing the septic tank to have maintenance inspections, cleaning and legal inspections carried out on the septic tank.

Where to inquire
Content Contact details
About the clogging of drain pipes/repair work and fraudsters posing as sewage inspectors Sewer Management Division, Environmental Planning Bureau (*Inquiries in Japanese only)
Tel: 045-671-2830
Fax: 045-641-5330
Email: [email protected]
Sewage charge Accounting and Management Division, Environmental Planning Bureau (*Inquiries in Japanese only)
Tel: 045-671-2826
Fax: 045-663-0132
Email: [email protected]
Notifications/consultations concerning septic tanks General Waste Disposal Division, Resources and Waste Recycling Bureau (*Inquiries in Japanese only)
Tel: 045-671-2547
Fax: 045-663-0125
Email: [email protected]

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