Cronulla sewage treatment plant:
Bundeena, Caringbah South, Burraneer, Dolans Bay, Lilli Pilli, Maianbar, Port Hacking, Greenhills Beach, Woolooware, Cronulla, Caringbah, Kurnell, Botany Bay, Miranda, Royal National Park, Clifton, Coalcliff, Stanwell Park, Otford, Waterfall, Lilyvale, Helensburgh, Woronora Dam, Stanwell Tops, Caringbah South, Yarrawarrah, Grays Point, Kirrawee, Woronora Heights, Barden Ridge, Gymea Bay, Sutherland, Loftus, Bangor, Yowie Bay, Woronora, Engadine, Heathcote, Maddens Plains, Taren Point, Sylvania Waters, Caringbah, Kangaroo Point, Como, Bonnet Bay, Kirrawee, Jannali, Oyster Bay, Kareela, Woronora Heights, Barden Ridge, Gymea, Sutherland, Loftus, Bangor, Woronora, Alfords Point, Lucas Heights, Menai, Illawong, Miranda, Sylvania, and Holsworthy.
Bellambi catchment area:
Keiraville, Balgownie, Mount Pleasant, Mount Keira, Mount Ousley, West Wollongong, Gwynneville, East Corrimal, Fernhill, North Wollongong, Fairy Meadow, Towradgi, Wollongong, Woonona, Bellambi, Russell Vale, Thirroul, Bulli, Austinmer, Coledale, Corrimal, Wombarra, Scarborough, and Tarrawanna.
Source: NSW Health