GD Watermark are a proudly owned Australian company, who offer solutions for the plumbing and irrigation industry. We specialise in the manufacturing and supply of irrigation risers, as well as distributing threaded fittings and PVC fittings, valves, hydroponic products, stormwater & DWV Pipe fittings, and insulation materials. We are proud to say that we have the widest range of plastic irrigation risers in Australia. As a manufacturer, distributor, wholesaler and importer, we believe in building exceptional relationships with our customers in a way that exceeds their expectations. We endeavour to operate with integrity,honesty and dignity in all aspects of our business.