Waste water and sewage arising from uses other than the three above, including stations, railway premises, depots and ancillary uses, shall be conveyed to public sewer after any pre-treatment.

• 除上述3处以外，其他用地(包括车站、铁路范围、车厂及辅助用途)所排出的废水及污水，须经预处理后引入公共污水渠。