See below notice from the ABCB
The WaterMark Administration wishes to advise that the following WaterMark Technical Specification has been approved for publication and adoption into the WaterMark Scheme:
Revised WMTS-051:2021 – Toilet douche seats
The objective of this revision was to align the product specification with the PCA in relation to backflow prevention requirements for toilet douche seats
The 2016 version of this Specification is listed in the WaterMark Product Database and will remain for 12 months from the date of this correspondence to provide sufficient time for products to be re-evaluated to the new 2021 version
WMTS-051:2021 has now been published on the ABCB Website, and will be included in the next revision of the Schedule of Products.
If you require any further clarification regarding the publication of this WMTS please do not hesitate to contact the WaterMark Administration.