Post By Admin
April 24, 2026One day, all of sudden your shower feels more like a weak trickle than a proper spray and that’s when you realise there’s a low water pressure problem going on.
But don’t worry, we will guide you through 7 simple repairs that can help restore strong water flow fast. We’ll cover something simple like valve checks and something more complex like booster pumps. If the problem seems limited to one bathroom, check out our guide on low water pressure in your shower
Let’s get into it.
The Common Causes of Low Water Pressure
No hot water pressure is such a mood killer, isn’t it? Before we get into how to improve water pressure, let’s explore the common causes of low water pressure.
1. Leaking Pipes
Even a small leak can reduce water pressure significantly. Instead of flowing to your taps, the water escapes through cracks or gaps.
To detect leaks yourself, check for damp spots on walls, ceilings, or floors, and listen for the sound of running water when all taps are off.
You can also monitor your water meter—if it keeps running even when no water is being used, there’s likely a leak that needs fixing.
2. Clogged Pipes
Over time, mineral deposits and debris can build up in your pipes, blocking water flow. It’s like trying to suck a thick milkshake through a tiny straw—not much is getting through.
Clearing out the buildup or replacing the affected pipes can make a big difference.
3. Air in Water Pipes
Hearing gurgling sounds when you turn on the tap? That’s likely air in water pipes, which blocks water flow and reduces pressure. Flushing the system or bleeding the pipes can solve this issue quickly.
4. Issues with the Main Water Supply
Sometimes, the culprit isn’t even in your home. Maintenance work, construction, or issues with the local water supply can cause low pressure. If this happens often, it’s worth contacting your water provider for updates.
5. Old or Corroded Pipes
Ageing pipes can corrode or become too narrow over time, choking off water flow. If your home has older plumbing, upgrading to modern, wider pipes can instantly increase water pressure at home.
6. Misadjusted or Broken Pressure Reducing Valve (PRV)
You may be familiar with the shape of it (a bell-shaped body with an adjustment screw on top), but don’t know what it is. Many houses usually have a Pressure Reducing Valve (PRV) installed near the water meter.
A faulty PRV often causes sudden whole-house pressure loss.
Basically, this valve controls how much mains pressure enters the house and if it’s set too low, worn out, or failing internally, it’s likely that you’ll start dealing with weak pressure across multiple taps at once. In plenty of cases, adjusting or replacing it restores pressure straight away.
How to Increase Water Pressure in Your Home
Now let’s get into the main guide: how to fix low water pressure. Follow these steps!
1. Check Your Main Water Valve
Start with the simplest fix—your main water valve. If it’s not fully open, it can restrict water flow throughout your home. Locate the valve (usually near your water meter) and turn it fully counterclockwise to ensure it’s open. Sometimes, this small adjustment is all you need to fix water pressure.
2. Inspect and Clean Faucets and Showerheads
Mineral deposits and debris often clog faucets and showerheads, reducing water pressure. Unscrew the fixtures, soak them in vinegar overnight to dissolve buildup, and scrub them clean. Reattach and test the water flow—your pressure might already feel noticeably better!
3. Check and Adjust Your Pressure Reducing Valve (PRV)
As mentioned, you can usually find a PRV near your main water meter. If it has been set too low, pressure throughout the house can suffer. Typical household pressure sits within 150–850 kPa, though most homes perform best around 300–500 kPa.
To adjust it:
- Loosen the locknut
- Turn the screw clockwise to increase pressure
- Turn anti-clockwise to reduce pressure
- Test pressure gradually as you go
Avoid pushing pressure too high, so anything above roughly 500 kPa is not advised. There’s simply no need to place unnecessary strain on taps, appliances, flexi hoses, and pipework. Replace your current PRV with a new one if what you’re holding is older than 10–15 years or won’t respond to adjustment
4. Pressure Test Your Plumbing System
Performing a pressure test can help pinpoint whether the issue lies with your pipes or the water supply. Use a pressure gauge (available at hardware stores) to check the pressure at an outdoor faucet.
A healthy reading should be between 40 and 60 psi. If it’s below this, you may need to look deeper into your plumbing system or contact a professional.
5. Flush Out Your Pipes
Sometimes, trapped air or sediment in your pipes can cause blockages. To flush the system:
- Turn off the main water supply.
- Open all taps, starting with the highest point in your home and working down.
- Let the water drain completely, then turn the supply back on and close the taps.
This simple process can clear out blockages and fix water pressure issues caused by air or debris.
6. Install a Pressure Booster Pump
A water pressure booster can be reliable for long-term fix in properties that consistently receive weak supply pressure. The way this pump works is by increasing pressure as water enters the home. So, all your showers, taps, and appliances can have stronger and more steady flow.
As a rough guide, a pump unit only may cost around $800–$900 AUD with full supplies and installation commonly cost $1,200–$1,500 AUD, depending on setup.
Note that booster pumps should only be installed by a licensed plumber to meet plumbing regulations in Australia. Before installing one, plumbers will perform a leak detection service to make sure there will be no hidden leaks.
7. Replace Old or Narrow Pipes
If your home has outdated or corroded pipes, upgrading to wider, modern materials can significantly improve water flow. This step requires more effort and expense but can provide a long-term solution for better water pressure throughout your home.
Now you know how to fix water pressure. Good luck enjoying smoother, faster water flow for all your daily activities!
Also Read: How to Increase Water Pressure in a House with Well?
When Should You Call a Plumber to Fix Low Water Pressure?
There are certain pressure problems that may point to faults deeper in the plumbing system that need professional tools and repairs, such as:
Low pressure across the whole house
Weak flow in every tap, shower, and appliance could most likely be due to a failing PRV, a supply fault, or restricted main pipework.
The DIY Methods Changed Nothing
Still having poor water flow even after you’ve checked the valve, cleaned fixtures and tested pressure? It’s worth calling a plumber to perform a thorough check inside the plumbing system.
Possibilities of a Hidden Leak
The usual suspects for homes with leak issues are damp patches, mould smells, or rising water bills. For accurate diagnosis, get a plumber to check any leaks behind walls, under concrete, or underground that could be the cause of low pressure while wasting water at the same time.
Existing Galvanised Pipes
The main characteristic of older galvanised steel pipes is that it can corrode internally and become narrow. Once that happens, we advise that you won’t rely on cleaning taps or adjusting valves as a fixed solution.
Random Pressure Fluctuations
Water pressure that randomly rises and drops can be caused by the supply line, PRV failure, shared demand, or pipe restrictions that require inspection.
How Neighbourhood Plumbing Can Help You
That is by getting the cause sorted properly! y calling our team, we can diagnose the real cause of low pressure and carry out:
- Water pressure testing
- PRV adjustment or replacement
- Leak detection and repairs
- Pipe repair or full repiping
- Booster pump installation
FAQ about Increasing Water Pressure
How do you increase water pressure in a low pressure system?
Start by checking the main water valve—make sure it’s fully open. Clean any clogged faucets or showerheads, and do a pressure test to spot any hidden issues. If these don’t work, upgrading to a booster pump might be the solution.
How can you increase water pressure without a pressure pump?
Simple fixes like cleaning fixtures, flushing your pipes to remove air or debris, and ensuring your main valve is fully open can help. If the issue is external, contact your water supplier to see if they can increase the supply pressure.
How do you make your water pressure stronger in your tank?
Check your tank’s outlet pipes for blockages, clean them thoroughly, and make sure the tank is filled to an appropriate level. Installing a higher outlet or relocating the tank to a higher elevation can also naturally boost pressure.
When should you call a plumber to solve this issue?
Call a plumber if you’ve tried everything and the problem persists. Professionals can help with more complex issues like pipe replacements or evaluating how to increase water pressure in Australia with local regulations in mind.
Conclusion
Fixing low water pressure is not quite daunting when you start with the right checks.
The solution can be something as simple as opening the main valve fully, cleaning blocked fixtures, or adjusting the PRV. Major fixes such as booster pumps or pipe upgrades usually come later once the your plumbers have ruled out all the basics.
But in the event you have worked through all 7 fixes and the pressure is still poor, the issue is likely deeper in the plumbing system. So, look no further than Neighbourhood Plumbing for fast and reliable help in Melbourne!
About the Author
From unclogging the toughest drains to repairing leaking toilets, Ricky is a seasoned plumber who has brought his craftmanship to homes across Melbourne. He is passionate about sharing plumbing tips just as much as he is about fixing your plumbing issues. So, when your taps or pipes begin leaking, you know who to call.
