To enhance the detection of water loss of inside service and fire service , the Water Supplies Department (WSD) has reviewed the Master Meter Requirements further to the WSD Circular Letter No. 5/2005. The enhanced requirements are stipulated at Enclosure.
The above requirements are applicable to new plumbing proposal applications (Form WWO 542) submitted on or after 1 March 2018. Such requirements will also be subsumed in “Technical Requirements for Plumbing in Hong Kong “ to be promulgated soon.