Any functional test conducted by an enterprise or sewage system in accordance with the preceding Article shall meet the following requirements:I. Tests conducted on wastewater or sewage treatment/pre-treatment or sludge treatment facilities shall be based on the maximum amount of daily wastewater or sewage production approved by the issuing authorities. In the event that the operating conditions are not based on the approved maximum amount of daily wastewater or sewage production, the test shall be conducted based on the reported or actual maximum amount in a regular test.II. The period of a functional test shall be at least five working days. The competent authority shall be notified three days before the testing date to participate in the functional test.The functional test conducted on the testing date as defined in Subparagraph 2 of the preceding paragraph shall meet the following requirements:I. The volume of the wastewater or sewage before and after treatment shall be respectively tested once. The water quality of the wastewater or sewage before treatment shall be tested once. The operating parameters of each facilities unit shall be tested once.II. Methods for the test of water quality after treatment:(I) In the event that wastewater or sewage is discharged continuously for 24 hours, sampling shall be conducted once every four hours for a total of six times. The samples taken twice consecutively shall be combined into a single one. A total of three samples created through the combination will be tested, and the average of the three samples is calculated.(II) In the event that wastewater or sewage is not discharged continuously for 24 hours, sampling shall be conducted 4 times in accordance with the daily discharge time. The samples taken twice consecutively shall be combined into a single one. A total of two samples created through the combination will be tested, and the average of the two samples is calculated.III. The test of water quality shall be conducted on the items submitted under each type of industry listed in Table 1, except in the event that the competent authority have specified the testing items.IV. An environmental testing agency with a permit issued by the central competent authority shall be commissioned to conduct the sampling and test of water volume and quality.V. Units participating in the functional test shall include the process operating unit, treatment process operating unit, sampling unit, and testing unit. In the event the functional test report requires the signature of a technician, the technician shall jointly participate in the test.VI. In case of an enterprise or sewage system with at least two sources of wastewater or sewage and at least two wastewater or sewage treatment/pre-treatment facilities, measurements and tests shall be conducted separately on each of the sources and facilities.Table 1：Enterprise or Sewage System Test Report Items.pdf