Ontario Society of Artists - http://ontariosocietyofartists.org/
Society of Canadian Artists - http://www.societyofcanadianartists.com/
Canadian Society of Painters in Watercolour - http://www.cspwc.com/
The Colour and Form Society - http://www.colourandformsociety.org/
Toronto Watercolour Society - http://www.torontowatercoloursociety.com/
The Etobicoke Art Group - http://etobicokeartgroup.com/
American Watercolor Society - http://www.americanwatercolorsociety.org/