Mechanism of water charges

In Yokohama City, we have adopted an increasing rate structure by caliber.
The increasing rate system by caliber is a fee system in which a basic fee is different depending on the caliber of the meter, and the unit price increases as the amount of water used increases based on the idea that daily water used is low. You.

Used for purposes other than public baths

Used for public baths subject to the control amount of bathing fees specified by the Governor of Kanagawa Prefecture based on the provisions of Article 4 of the Price Control Ordinance (Edict No. 118 of 1946).

A basic fee will be charged for each caliber (see price list).
If the water after use does not flow to the public sewer pipe, or for details on sewerage usage fees, such as weight loss certification, use of wells, please contact the Sewerage River Bureau website or the Sewerage River Bureau Accounting Section Usage Fee TEL045-671-2826 Please give me.

Applicable as of July 1, 2021
＊The billed amount is the calculated amount x 1.1 (rounded down to the nearest 1 yen).

Effective April 1, 2001
＊+ (plus) and - (minus) of the formula are the cumulative difference in unit price for each water level.
＊The billed amount is the amount calculated in the calculation table x 1.1 (rounded down to the nearest 1 yen).

You can calculate water charges with a simple calculation tool.
"Simple Water Charge Calculation Tool" (outside site)
※This is a calculation tool dedicated to the fee structure by caliber.

Quick reference table for water and sewerage usage fees

Since the special calculation is applied to the caliber of 13mm to 25mm, the basic fee is calculated in units of 0.5, 1.0, 1.5, and 2.0 months. In addition, since the caliber of 40mm or more is not subject to special calculation, the caliber of 40mm or more will be calculated in 1.0 or 2.0 months. The calculation of the pay-as-you-go fee is calculated in units of 1.0 months.
※However, about the sewerage fee, it is calculated in 0.5 months and 1.5 months.

Applicable as of July 1, 2021
＊The billed amount is the calculated amount x 1.1 (rounded down to the nearest 1 yen).

Effective April 1, 2001
＊+ (plus) and - (minus) of the formula are the cumulative difference in unit price for each water level.
＊The billed amount is the amount calculated in the calculation table x 1.1 (rounded down to the nearest 1 yen).

The fee when the number of days of use is less than 15 days is obtained by multiplying the sum of one-half of the basic fee listed in the table for one month according to the meter diameter and the metered fee by 1.1.1 If there is a fraction less than 1 yen, this will be rounded down.
If the number of days of use is between 16 days and 30 days, the period of use is considered as one month.
However, if the caliber is 40mm or more, even if the usage period is less than one month, it will be calculated as a monthly fee.

When the number of days of use is 31 days to 45 days, the fee is 1.1 multiplied by the sum of three-half of the amount of the basic fee listed in the table of one month according to the meter diameter and the metered fee. If there is a fraction less than 1 yen, it will be rounded down.
If the number of days of use is between 46 days and 60 days, the fee is calculated assuming the period of use as 2 months.
However, if the caliber is 40mm or more, even if it is less than the two-month usage period, it will be calculated as a two-month fee.

Normally, the meter reading period is two months, but if the use start period exceeds two months, the fee is the amount obtained from the same day two months before the meter reading date as the temporary meter reading date (deemed meter reading date) (The amount obtained by multiplying the amount obtained by multiplying by 1.1 by the sum of the amount obtained from the deemed meter reading date to the start date of use (the amount of time). However, if there is a fraction less than 1 yen, this will be rounded down.

If the following family members come, there is a system to reduce or exempt the basic charge of water and sewerage usage fees upon request.

1. Physical disability (Grade 1 or 2)
2. Intellectual disability (Intelligence Index 35 or less)
3. Single-parent households, etc. medical expenses subsidized households
4. Households receiving special Child Raising Allowance
5. Mental disorder (Grade 1)
6. Duplicate disability (Persons who fall under two or more of physical disability grade 3, intelligence index 75 or less, mental disorder grade 2) This includes cases where two people meet the requirements.
7. Insured persons under the Nursing Care Insurance Law need nursing care 4 or 5
8. Single-parent households receiving welfare

• ※Please note that if the person eligible for reduction is admitted to a facility for more than 3 months, it will not be eligible for reduction.

• Handling summary about welfare reduction of taxes such as City of Yokohama, Water Works Bureau water rate (PDF: 521KB)

For more information, please contact the Water Works Bureau Customer Service Center or the ward office Health and Welfare Center.
※Due to the revision of the fee, the reduction of taxes equivalent to the basic water volume (8m3 per month) has been abolished.

• If turbid water comes out at a customer's home due to construction or accidents caused by Water Works Bureau, the amount may be reduced.
• Support for survivors in the Great East Japan Earthquake (reduction of water charges, etc.) ※The reception was closed in April 2014. We will continue to provide support to those who are currently registered.
• Support for the survivors after the Great East Japan Earthquake (press release at that time) (PDF: 125KB)
• For those affected by heavy rain and typhoon between September 3, 2019 and October 25, 2019 (PDF: 93KB)

• If one meter is used for general living in two or more households, this system calculates the water rate for each household as well as apartment houses at the request of the customer.
• The calculation method is based on the amount of water used divided by the number of households, and the amount obtained by multiplying the total amount by the consumption tax equivalent is the water charge.
• If the diameter of the water meter is 20 mm or more, calculate at a rate of 20 mm in diameter.

Water Works Bureau will send you a complete set of required documents, so please return the application form and a copy of each household's resident certificate or a certificate of entry on the resident certificate (within three months from the issuance of the head of the household, not copying your personal number) in a reply envelope sent from Water Works Bureau. Please note that copies of resident certificate with no name of the head of the household, no relationship, and personal number (My Number) cannot be accepted.
For more information, please contact the Water Works Bureau Customer Service Center.
※The department in charge (045-337-0473) may contact you to confirm the contents of the application form.

１．When using 70m3 (diameter 20mm) in 2 households for 2 months
（1） If the system is not applied, the fee will be 14,911 yen and will be calculated as follows.
　　If you apply to the water rate calculation table (for 2 months) and calculate it,
　　(301 yen x 70m3 (water consumption)-7,514 yen) x 1.1 = 14,911 yen.
　　(rounded down to less than 1 yen)
（2） If the system is applied, the fee will be 10,122 yen and will be calculated as follows.
　A. First, the amount of water used is divided by the number of households.
　　70m3 / 2 households = 35m3/ Households
　B. Apply the amount of water obtained in a to the water rate calculation table (for two months) and calculate it.
　　{(177 yen x 35m3 (water consumption)-1,594 yen) x 2 households} x 1.1 = 10,122 yen.
　　(rounded down to less than 1 yen)
２．When using 28m3 (diameter 20mm) for 2 months in 2 households
（1） If the system is not applied, the fee will be 3,698 yen and will be calculated as follows.
　　If you apply to the water rate calculation table (for 2 months) and calculate it,
　　(177 yen x 28m3 (water consumption)-1,594 yen) x 1.1 = 3,698 yen.
　　(rounded down to less than 1 yen)
（2） If applied, the fee will be 3,841 yen and will be calculated as follows.
　A. First, the amount of water used is divided by the number of households.
　　28m3 / 2 households = 14m3/ Households
　B. Apply the amount of water obtained in a to the water rate calculation table (for two months) and calculate it.
　{(4 yen x 14m3 (water consumption) + 1,690 yen) x 2 households} x 1.1 = 3,841 yen. (rounded down to less than 1 yen)
３．When using 440m3 (diameter 20mm) for 2 months in 10 households
（1） If the system is not applied, the fee will be 155,326 yen and will be calculated as follows.
　　If you apply to the water rate calculation table (for 2 months) and calculate it,
　　(358 yen x 440m3 (water consumption)-16,314 yen) x 1.1 = 155,326 yen.
　　(rounded down to less than 1 yen)
（2） If the system is applied, the fee will be 71,478 yen and will be calculated as follows.
　A. First, the amount of water used is divided by the number of households.
　　440m3 / 10 households = 44m3/ Households
　B. Apply the amount of water obtained in a to the water rate calculation table (for two months) and calculate it.
　　{(253 yen x 44m3 (water consumption)-4,634 yen) x 10 households} x 1.1 = 71,478 yen.
　　(rounded down to less than 1 yen)

If the use falls under any of the following items among welfare facilities, the basic number of units can be applied to the home part by application.

1. Facilities for conducting dementia-response elderly cohabitation support projects prescribed in Article 5-2, Paragraph 6 of the Elderly Welfare Act (Act No. 133 of 1963)
2. Light-paying nursing homes stipulated in Article 20-6 of the Elderly Welfare Law
3. Paid nursing homes stipulated in Article 29 of the Welfare Law for the Elderly
4. Facilities for providing cohabitation support prescribed in Article 5, Paragraph 17 of the Act for Comprehensive Support of Daily and Social Life of Disabled Persons
5. Yokohama-shi person with a disability group home setting operation summary (facilities corresponding to Article 3 second to fifth of the director's approval on August 1, 1985)