Cook's Plumbing Supplies is a family-owned business that has been serving Sydney's plumbing trade since 1969. It has become one of the largest independent suppliers of plumbing and bathroom supplies in Australia, with a significant presence in New South Wales and Queensland. The company operates thirteen trade stores, four retail showrooms, and has divisions dedicated to home builders and commercial projects.

The company specializes in a wide range of plumbing products for the trade, home builders, and commercial sectors, including items for HVAC and civil markets. Cook's Plumbing Supplies is a founding member of Plumbing Plus, a national buying group, which allows them to offer competitive pricing and a diverse product range. With a team of over 200 skilled staff, they provide expert advice on product design and requirements.

Cook's Plumbing Supplies has embraced digital transformation to enhance operational efficiency and customer experience. This commitment to innovation has led to significant cost savings and improved service delivery. In 2025, the company generated approximately $210 million in revenue and continues to be a key player in the Australian plumbing industry.