(a) In this section, “reusable diverted water” means water that:
(1) Is generated by:
(i) Backwashing an on–site potable water treatment system; or
(ii) Using an ice maker;
(2) Is collected for reuse instead of discharged to a residential on–site sewage disposal system; and
(3) Contains no constituents that are detrimental to public health or the environment.
(b) (1) Subject to paragraph (2) of this subsection, a person may use reusable diverted water for beneficial purposes, including:
(i) Gardening;
(ii) Composting;
(iii) Lawn watering; and
(iv) Irrigation.
(2) A person may use reusable diverted water only:
(i) On the site on which the reusable diverted water originates; and
(ii) In accordance with any applicable State and local laws or regulations, including State and local plumbing codes.