A. An owner shall ensure that:
(1) The disposal of filter backwash water and pool or spa wastewater conforms with:
(a) COMAR 09.20.01;
(b) Local sanitary code requirements; and
(c) Discharge requirements of COMAR 26.08.0126.08.04; and
(2) Deck drainage disposal conforms with:
(a) COMAR 09.20.01; and
(b) Local plumbing code requirements.
B. An owner may not return filter backwash water or other wastewater to a pool or spa, except for filter backwash water that has been filtered to remove particulates and treated to eliminate coliform bacteria and waterborne pathogens.