The new standards will help households and businesses use less water, reduce water and energy bills, and support the sustainable management of Victoria's water resources. Regulatory impact analysis estimated the changes could save the average household around $170 to $190 per year, depending on how water is heated.
Under the Plumbing Amendment (Water Efficiency) Regulations 2026, new minimum water-efficiency ratings will apply to plumbing fixtures installed as part of regulated plumbing work. In homes, basin taps will be required to meet a minimum 5-star WELS water-efficiency rating, while kitchen and laundry taps, toilets and showers must meet a minimum 4-star WELS rating.
The changes form part of our broader work to improve water efficiency and prepare for a drier climate. Alongside permanent water-saving rules, investment in recycled water and integrated water management projects, water-saving education programs, and long-term planning to secure supplies for growing communities, the new standards will help ensure Victoria gets more value from every drop of water.
The regulations are expected to deliver lasting benefits by conserving precious water supplies, reducing energy use and greenhouse gas emissions associated with hot water use, and creating more sustainable homes and businesses.
The new requirements will apply to regulated plumbing work in both new and existing buildings, with some exemptions applying in certain circumstances.
By improving the efficiency of everyday water fixtures, Victoria is taking another step towards securing water supplies for the future while helping households and businesses save money and use water more efficiently.
Page last updated: 22/10/26