.31 Filter Backwash Water and Deck Drainage Disposal.

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 26.08.01—26.08.04; 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.