Frequently Asked Questions about Water Pressure

The water pressure inside a home, business or office building should never exceed 500 kilopascals, or the equivalent of 72 PSI.

If the pressure does exceed 500kpa, a pressure limiting valve must be installed to meet Australian standards and regulations.

However, many houses do exceed the limit as many old homes were never initially tested. For some household appliances, this could void warranties.

High water pressure certainly can damage your pipes and plumbing fixtures.

One of the most common problems is water hammer. What is water hammer? It’s when a tap or valve is suddenly closed and hydraulic shock waves reverberate throughout your pipes. Essentially, when you suddenly turn off the tap the sudden jolt is like a bull running into a door.

You’ll hear loud banging and vibrating, and if left alone you may be faced with burst pipes, leaking pipes and leaking taps.

Low water pressure will reveal itself through leaking taps and showerheads, plus slow fill times for your washing machine and dishwasher.

Leaking pipes are often the common cause. This is because the water is being diverted through any cracks or holes in the pipes. By the time it reaches the faucet, you have lost much of the initial pressure. Blocked pipes can also be to blame.

Any signs of low water pressure should be investigated by a licensed plumber promptly.

If you have a water pressure regulator it is typically located where the main water line comes into the house, just after the main shut off valve.

However, if you do not have a regulator valve, it can be installed anywhere which is an easily accessible location. Check with a professional plumber if you ever have any queries for proper placement.