About declaration of water reduction amount of sewage discharge

About calculation method of the sewerage system usage fee, based on the Inagi-shi sewerage regulations, we regard consumption of tap water and well water and the same quantity as discharge of sewage and calculate.
However, if there is a significant difference between the amount of water used and the amount of wastewater discharged to the public sewage system due to evaporation of cooling towers, watering of grounds, etc., this can be reported (declaration of water reduction).

Only the amount of water used in the sewage system is subject to water reduction certification. The user (customer) is responsible for the installation cost of the private water meter (meter), the maintenance cost after installation, and the replacement cost (according to the Measurement Law, the water meter must be replaced once every eight years). Therefore, please be sure to consider in advance whether the effect can be expected to be enough to recover the cost.

1) Water used in the ice-making industry and other business activities.
2) Significant difference between the amount of water used for business activities and the amount of water discharged into the public sewage system.
3) The private water meter that measures the amount of water loss must be an approved product and within the expiration date.
4) The private water meter shall be installed in the water supply pipe in front of the water reduction target (equipment, faucet, etc.) and directly measure the amount of water reduction (the amount that is not discharged into the public sewer) .
Note: Declaring water reduction by measuring at the drainage part is not accepted.
5) Appropriate construction work for water supply and drainage equipment, etc. shall be carried out.

• At the time of application for drainage facilities (before construction starts), please consult with the Sewerage Division that you wish to report the amount of water reduction. We will check the following submission materials and explain the precautions.

<Documents to be submitted>
1) About water reduction of public sewage wastewater discharge (application)
2) Site map
3) Piping diagram (Piping diagram of the water supply and drainage system, all piping after the meter is clear)
4) Meter specifications
5) In the case of water reduction application for cooling towers and boilers, the specifications

• Install the meter after confirming the "Conditions for Receiving Water Reduction" and submit a private water meter (use, change, or abolition) notification to the Sewerage Division.
• After the Sewerage Division staff confirms the site based on the submitted materials, we will send a reply to the water reduction application to the customer.
• Please submit a water reduction report (filthy water discharge report) to the Sewerage Division within 3 days from the date of reading the water meter.