The Ontario Building Code | Combustible Components in Public Pools and Public Spas
3.1.5.22. Combustible Components in Public Pools and Public Spas
(1) Combustiblefittings and components in a public pool or public spa, including main drains, piping, skimmers, return inlets, steps, ladder rungs and liners, are permitted in a building required to be of noncombustible construction.