Some properties are outside our standard pressure zone and don’t receive standard water pressure. For example when your water pressure is below 15 metres head (mH) or above 100 mH in metro areas, and below 13 mH or above 100mH in regional areas, your water pressure is non-standard under our operating licence.

If your property is one of these, you will need to manage the water pressure in your home. Find out what you need to do if your water pressure is high or low.

High water pressure

Due to the topography of the land and design of the scheme some properties receive have high water pressure.

We strongly recommend properties with high water pressure install pressure reduction valves (PRV) to minimise damage to internal plumbing. The PRV will reduce the pressure to align with plumbing and appliance standards.

You will need to replace the PRV approximately every 5 years. You may notice an increase in your water pressure as your PRV begins to decline.

A waterwise plumber can help you reduce the water pressure in your home. You can search for a waterwise plumber via our waterwise specialists tool.

Frequently asked questions

The effects of low pressure are fairly obvious when you turn on your tap. The biggest effect is the flow rate of your water supply. Simply put, it will take you longer to fill up your bath compared to someone with higher pressure.

Receiving non standard water pressure does not change your current water bill costs.

However, high water pressure may result in higher water usage and a larger usage bill. For example, the higher the water pressure, the more litres per minute the shower will use.

High water pressure may also increase the risk of leaks and breaks. Undetected leaks will increase your water usage.

Having low pressure typically means you may use less water. For example, the lower the water pressure, the fewer litres per minute the shower will use.

Low water pressure

Due to the topography of the land and design of the scheme some properties receive have low water pressure.

To increase the water pressure inside your home, we recommend discussing your options with a certified plumber. You can search for a waterwise plumber via our waterwise specialists tool.

Frequently asked questions

Plumbing fixtures and household appliances are designed to operate within particular water pressure specifications. Damage can be caused to pipes and appliances where water pressure specifications are exceeded.

High water pressure can also increase the occurrence of leaks and bursts and could potentially shorten the life of appliances and plumbing fixtures.

High water pressure may also cause excessive noise in your water pipes.