Beach water quality inspection standards
Referring to the beach water quality monitoring methods of Hong Kong and the United States, we took the A-level coastal environment quality standard with the number coliform group below 1000 CFU/100mL as the assessment basis (hereinafter referred to as “A-level equivalents”). The A-level equivalents are then classified with enterococci into good or fair as the classification for recreational water. The classification is summarized as follows:
  Water Quality Classification Reference limit value (selecting the water sampling located to the left, center, and right of the monitoring point and computed as a geometric mean)  
  Good Coliform group ≦1000 CFU/100mL and Enterococci group ≦ 50 MPN/100mL  
  Fair Coliform group ≦1000 CFU/100mL and Enterococci group > 50 MPN/100mL  
  Unsuitable for water activities Coliform group >1000 CFU/100mL  
**The unit of coliform group is “CFU/100mL”, which means the number of colonies in each 100mL water sampling.
**The unit of enterococci group is “MPN/100mL”, which means the possible maximum number of colonies in each 100mL water sampling.
Release of beach water quality inspection results
To provide the public with instant and effective beach water quality analysis results, the EPA’s inspection results of beach water quality are uploaded to the EPA electronic data exchange platform within 48 hours after the predetermined sampling time by our monitoring contractors pursuant to the EPA sampling regulations. The uploaded data is audited preliminarily within 24 hours and approved to be released on the EPA “Beach Water Quality” website. However, in order to provide instant reference of beach water quality, the data is not approved by a complete quality assurance (QA) procedure. If you need inspection data with complete QA, please refer to the data advanced inquiry of the this website.
UPDATE:2019/09/27