Calculation of usage fees

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Page ID 1005202 Update Date Reiwa 6, December 16

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Sewerage fees are calculated based on the table below.

  • Note 1: When calculating the usage fee for one month, please refer to Table 1, and when calculating the usage fee for two months, please refer to Table 2.
  • Note 2: Normally, calculations are made for a two-month period, so please use Table 2.
  • Note 3: Due to the increase in the consumption tax rate and local consumption tax rate that took effect on October 1, 2019, the portion of the sewerage usage fee that includes consumption tax will change from 8% to 10%. A consumption tax rate of 10% will be applied to the sewerage usage fee calculated for December 2019.

Table 1 Sewerage Usage Fee Table per Month

Type of wastewater: General wastewater
Category Emissions Rate
Basic Usage Fee For 8 cubic meters or less 560 yen
Excessive Use More than 8 and less than or equal to 20 cubic meters 110 yen per cubic meter
Excessive Use For amounts exceeding 20 and up to 30 cubic meters 140 yen per cubic meter
Excessive Use For amounts exceeding 30 and up to 50 cubic meters 170 yen per cubic meter
Excessive Use For amounts exceeding 50 and up to 100 cubic meters 200 yen per cubic meter
Excessive Use For amounts exceeding 100 and up to 200 cubic meters 230 yen per cubic meter
Excessive Use More than 200 and less than or equal to 500 cubic meters 270 yen per cubic meter
Excessive Use For amounts exceeding 500 and up to 1,000 cubic meters 310 yen per cubic meter
Excessive Use More than 1,000 cubic meters 345 yen per cubic meter
Type of wastewater: Bathhouse wastewater
Category Emissions Rate
Basic Usage Fee For 8 cubic meters or less 280 yen
Excess Usage Fee More than 8 cubic meters 26 yen per cubic meter

Example 1: For a typical household with a monthly water usage of 20 cubic meters

(When calculated as 10% equivalent to consumption tax)

  • 8 cubic meters or less
    560 yen
  • From over 8 square meters to up to 20 cubic meters
    12 cubic meters × 110 yen = 1,320 yen
  • Total
    560 yen + 1,320 yen = 1,880 yen

Monthly Usage Fee
1,880 yen × 1.10 (Equivalent of Consumption Tax) = 2,068 yen.

Table 2 Sewerage Usage Fee Table per 2 Months

Type of wastewater: General wastewater
Category Emissions Rate
Basic Usage Fee For 16 cubic meters or less 1,120 yen
Excess Usage Fee More than 16 and less than or equal to 40 cubic meters 110 yen per cubic meter
Excess Usage Fee For amounts exceeding 40 and up to 60 cubic meters 140 yen per cubic meter
Excess Usage Fee For amounts exceeding 60 and up to 100 cubic meters 170 yen per cubic meter
Excess Usage Fee For amounts exceeding 100 and up to 200 cubic meters 200 yen per cubic meter
Excess Usage Fee For amounts exceeding 200 and up to 400 cubic meters 230 yen per cubic meter
Excess Usage Fee For amounts exceeding 400 and up to 1,000 cubic meters 270 yen per cubic meter
Excess Usage Fee For amounts exceeding 1,000 and up to 2,000 cubic meters 310 yen per cubic meter
Excess Usage Fee More than 2,000 cubic meters 345 yen per cubic meter
Type of wastewater: Bathhouse wastewater
Category Emissions Rate
Basic Usage Fee For 16 cubic meters or less 560 yen
Excess Usage Fee More than 16 cubic meters 26 yen per cubic meter

Example 2: For a typical household with a water usage of 40 cubic meters over 2 months

(When calculated at a consumption tax rate of 10%)

  • For 16 cubic meters or less = 1,120 yen
  • For amounts exceeding 16 cubic meters and up to 40 cubic meters = 24 cubic meters × 110 yen = 2,640 yen
  • Total
    1,120 yen + 2,640 yen = 3,760 yen

2 Months Usage Fee
3,760 yen × 1.10 (Equivalent of Consumption Tax) = 4,136 yen.

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Inagi City Urban Environment Management Department Sewerage Division
〒206-8601 Tokyo, Inagi City, Higashi-Naganuma 2111
Phone number: 042-378-2111 Fax number: 042-378-9719
Contact the Inagi City Urban Environment Management Department Sewerage Division