draft public utilities water supply amendment regulations 2016 2 pages in english . notice will be published in the republic of singapores government gazette when adopted. public utilities water supply regulations will be amended to introduce minimum water efficiency standards for taps amp mixers. from 31 march 2017 all taps and mixers to be supplied or for sale for potable water use in singapore must be of at least 1-tick water efficiency rating. comparison showing the existing regulations and proposed draft amendments to the regulations existing regulations second schedule part ii requirements relating to water efficiency 1. every flushing cistern or flush valve shall be of such a design as to use not more than the amount of water specified in paragraph18 1 2 or 5 of the first schedule as the case may be. 2. every clothes washing machine intended for household use shall be of such a design as to use not more than 12 litres of water per kilogram of wash load for the washing programme recommended by the manufacturer for a normally soiled load at the rated capacity of the washing machine. proposed draft amendments to regulations alignleft second schedule part ii requirements relating to water efficiency 1. every flushing cistern or flush valve shall be of such a design as to use not more than the amount of water specified in paragraph18 1 2 or 5 of the first schedule as the case may be. 2. every clothes washing machine intended for household use shall be of such a design as to use not more than 12 litres of water per kilogram of wash load for the washing programme recommended by the manufacturer for a normally soiled load at the rated capacity of the washing machine. 3. every shower ta and mixer must have a flow rate of not more than 9 litres per minute. 4. every basin ta and mixer must have a flow rate of not more than 6 litres per minute. 5. every sink ta and mixer or bib ta and mixer must have a flow rate of not more than 8 litres per minute. remarks proposed draft clauses 3 4 and 5 to effect the minimum water efficiency standards for sale and supply of shower basin sink bib taps and mixers in potable water service installations in singapore to promote water conservation. singapores mandatory water efficiency labelling scheme mwels for shower basin sink taps and mixers was introduced in 2009. under the scheme all shower basin sink taps and mixers must be registered and labelled to provide information on their water efficiency level before they can be sold or supplied in singapore. a rating system of 0 1 2 3 ticks is used to reflect the water efficiency level of such shower basin sink taps and mixers.pub regularly reviews the water efficiency standard of water fittings and appliances. since the introduction of mandatory water efficiency labelling for taps and mixers in 2009 the market has shifted towards more water efficient products. to improve water efficiency pub intends to introduce minimum water efficiency standards for taps mixers from 31 march 2017 i.e. only taps mixers with at least a 1-tick rating are allowed to be sold supplied.