Plaza Water Treatment Services is an Australian owned and operated family business with a combined industry experience of 32 years specialising in spray booth water treatment and maintenance. Plaza has grown to be the market leader in Australia for spray booth water treatment and the services we provide. Looking for a trusted and effective water treatment company? Plaza Water Treatment Services (Plaza WTS) has been the leading spray booth water treatment solutions company for over 21 years. Starting as spray booth servicing and water treatment services experts, we have long since become manufacturers of a wide range of specialised products.