February 2026
If you have ever heard loud banging, knocking or thudding noises in your pipes when turning a tap off, you have likely experienced water hammer. While it might seem like a minor annoyance, water hammer is a sign that your plumbing system is under stress.
In Brisbane homes, especially during late summer when water usage is high and pressure fluctuates, water hammer is more common than many homeowners realise. At Turbo Plumbing Solutions, we regularly diagnose and fix water hammer issues before they lead to serious damage.
Here is what water hammer is, why it happens and why it should never be ignored.
What Is Water Hammer
Water hammer occurs when there is a sudden change in water flow within your plumbing system. When a tap, washing machine or dishwasher valve shuts off quickly, the moving water has nowhere to go. The sudden stop creates a shock wave through the pipes. That shock wave is what causes the banging noise.
Even though the water flow stops, the pressure continues travelling through the pipe. Over time, repeated pressure surges can strain your plumbing system.
Is Water Hammer Dangerous
Water hammer is not always an emergency, but it is not harmless either. If left unresolved, it can lead to:
Burst pipes
Loose or damaged pipe connections
Reduced lifespan of hot water systems
Damage to washing machines and dishwashers
Increased stress on valves and fittings
The louder and more frequent the noise, the greater the risk. In some cases, water hammer may not be loud at all, but the pressure damage still occurs silently behind walls or underground.
Why Water Hammer Seems More Common Today
Modern tapware and appliances contribute to the increase in water hammer issues. Many newer installations use quarter turn taps, single lever mixers and solenoid valves found in washing machines and dishwashers. These components shut off water flow quickly, which increases the likelihood of pressure shock.
High water pressure in certain Brisbane suburbs can also make water hammer worse. When pressure levels are already elevated, the impact of sudden shut offs becomes more severe.
Common Causes of Water Hammer
Several issues can trigger or worsen water hammer in your home.
High Water Pressure
Excessive pressure places constant strain on your system. When water is forced through pipes at high pressure, the shock from sudden valve closure becomes more aggressive.
Defective or Worn Control Valves
Valves that are worn or poorly fitted can create tapping or knocking sounds as water pressure shifts. These noises can travel through pipework and be difficult to pinpoint without professional inspection.
Blocked Pipes
Obstructions inside your plumbing restrict water flow. When water forces its way through a narrow passage and is suddenly stopped, pressure shock increases.
Incorrect Pipe Size
If pipes are too small for the volume of water flowing through them, pressure builds quickly. Without adequate space to absorb that force, hammering becomes more likely.
Loose or Poorly Installed Pipe Connections
If pipes were not properly secured during installation, they may move when pressure surges occur. This movement can cause banging sounds and increase the risk of joint failure or leaks.
Water Hammer and Your Hot Water System
Water hammer can place additional strain on your hot water system. When a new hot water unit is installed, a licensed plumber should test water pressure to ensure it meets Australian standards. Excessive pressure can void manufacturer warranties and shorten the lifespan of your system.
The same applies to washing machines, dishwashers and tapware. If your water pressure is too high, you may be risking both damage and warranty complications.
How to Fix Water Hammer
Fixing water hammer starts with proper diagnosis. A professional plumber may:
Test your water pressure
Install or adjust pressure limiting valves
Secure loose pipework
Replace worn valves
Clear blockages
Recommend pipe upgrades where necessary
In some cases, installing water hammer arrestors may be appropriate to absorb pressure shock.
The key is identifying the real cause rather than treating the symptom.
Do Not Ignore the Warning Signs
Water hammer is your plumbing system telling you something is not right. While it may start as a minor noise, repeated pressure shock can weaken your entire system over time.
If you hear banging pipes, notice fluctuating water pressure or suspect excessive pressure in your home, it is best to address it early.
Servicing Brisbane Northside
Turbo Plumbing Solutions supports homeowners across Albany Creek, Brendale, Eatons Hill, Strathpine, Warner, North Lakes, Bridgeman Downs, Griffin, Aspley, Everton Park and surrounding suburbs. We understand local water pressure conditions and how they impact residential plumbing systems.
Protect Your Plumbing Before It Becomes an Emergency
Water hammer is preventable and manageable when addressed early. Do not wait until a pipe bursts or a hot water system fails.
Book a professional inspection with Turbo Plumbing Solutions. Make sure you only hire professionals when booking so your plumbing stays reliable all summer long. https://www.turboplumbingsolutions.com.au/book
