(1) The WELS standard must set out:
(a) criteria for rating the products in relation to either or both of the following:
(i) water efficiency;
(ii) general performance; and
(b) requirements in relation to communicating such ratings on product labels.
(2) The WELS standard must require the products to be registered for the purposes of specified supplies of the product.
(3) The WELS standard may require one or more of the following:
(a) that the products comply with specified minimum water efficiency requirements for the purposes of specified supplies of the product;
(b) that the products comply with specified minimum general performance requirements for the purposes of specified supplies of the product;
(c) that the products comply with one or more requirements relating to plumbing imposed by or under a law of a State or Territory, as in force from time to time;
(d) that a specified type of person or body certifies that the products comply with one or more requirements relating to plumbing imposed by or under a law of a State or Territory, as in force from time to time;
(e) that the products be WELS - labelled for the purposes of specified supplies of the product.