Water quality regulations of the ordinance concerning the conservation of Living Environment

In the ordinance on conservation of Yokohama living environment, there are the following main regulations related to water quality.

Businesses in the city must comply with regulatory standards (drainage) at drainage outlets (Ordinance Article 28).
Businesses with a certain amount of wastewater of a certain size or larger are obliged to measure, record, and preserve the amount of wastewater and water quality (Ordinance Article 30).

Businesses must not discharge liquids containing prohibited substances so that they can penetrate underground infiltrate them so that they can penetrate underground infiltrate underground (Ordinance Article 29, Paragraph 1) .
In addition, the floor and surroundings of the facility where the work is performed must comply with the structural standards to prevent infiltration underground (Ordinance, Article 29, Paragraph 2).

When draining wastewater generated by construction work directly into public water bodies, it is necessary to comply with the regulations regulation standards (drainage) of the regulations (Ordinance Article 28).
In addition, procedure of report is necessary when we meet the next requirements (the regulations Article 105).
①Wastewater generated by construction work is discharged directly into public water bodies.
②Wastewater volume of 10 m3 or more per day (including domestic wastewater and rainwater required for wastewater treatment during construction period)

Businesses must immediately take emergency measures and notify Yokohama City when pollution of water pollution occurs due to an accident or vehicle accident that occurred at the business establishment or vehicle accident, it is necessary to immediately report it to Yokohama City (Ordinance Article 149 Paragraph 1).
In addition, the business operator that caused the above situation must promptly report the situation of the accident and the outline of the measures taken (Ordinance, Article 149, Paragraph 2).