# COMAR Title 10 — Maryland Department of Health

## Subtitle 17 — Swimming Pools and Spas

### Chapter 01 — Public Swimming Pools and Spas

#### Regulation .31 Filter Backwash Water and Deck Drainage Disposal.

*COMAR 10.17.01.31*

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.