9 Tips for Maintaining Good Water Pressure

Higher pressure can push more water through fixtures such as showers, which can increase water use and your water bill. Understanding the damage caused by high water pressure is also important, as excessive pressure can put extra strain on your plumbing and contribute to leaks, bursts and premature wear on fixtures and appliances. 

More water doesn’t automatically give you better performance either. 

Australia’s WELS scheme shows this with water-efficient showers. Higher-rated models undergo additional testing for spray coverage and force, while a 5-star shower can use up to 50% less water than a 3-star model. 

So, maintaining good water pressure isn’t about getting the strongest possible stream from every tap. You want steady, reliable water delivery without wasting water or putting unnecessary pressure on your plumbing. These nine tips will help you keep it that way. 

#1 Know Your Normal Water Pressure 

Good water pressure should give you a steady flow from your taps and showers without putting too much strain on your plumbing. For cold water services in Australia, working pressure at an outlet should be at least 50 kPa. Static pressure inside the building should not exceed 500 kPa, unless a particular fixture or appliance requires something different.

You don’t need to chase the highest number within that range. In fact, consistently high pressure can put more stress on taps, valves, flexible hoses and appliances. At the other end, low pressure can leave you waiting longer to fill a sink or struggling with a weak shower. Don’t confuse pressure with flow. A tap can have poor flow because of a blocked aerator or another restriction even when the water pressure entering your property is fine.

#2 Compare the Flow Around Your Home

If your shower suddenly feels weaker, check a few other fixtures before assuming you have a pressure problem.

Try different taps and compare the hot and cold water. If only one fixture has weak flow, the problem could be at that fixture. If several have changed, the issue could sit further back in your plumbing or water supply.

You can also run a simple flow test using a bucket of a known size and a tap close to your water meter. Time how long it takes to fill, then compare the result with your local water supplier’s guidance.

Remember, this checks flow in litres per minute, not water pressure in kPa. If you need an actual pressure reading, you’ll need the right pressure-testing equipment.

#3 Keep the Main Water Valve Fully Open 

If your water pressure changed after the supply was shut off, check the main water valve.

This valve controls the water entering your property. It may have been closed during plumbing work, maintenance or an emergency. If it wasn’t fully opened afterwards, it can restrict water flow into your home.

If the valve is safe to access, check that it’s fully open. Don’t force it if it feels stuck, looks damaged or starts leaking. Have the valve checked if you notice any of these problems.

#4 Clean Tap Aerators and Filters 

If one tap has weaker flow than the others, check the aerator or filter. These small parts can collect sediment, scale and debris that restrict the water coming through. Remove the aerator if it’s designed to come off, then clean away any visible build-up before putting it back. If the flow improves, you’ve found the restriction.

If several taps have weak flow, the problem probably sits elsewhere in the plumbing.

#5 Check for Water Leaks 

A drop in water pressure can point to a leak somewhere in your plumbing. Water escaping before it reaches your fixtures can reduce the flow around the home. Look for damp areas, dripping fixtures, unexplained increases in water use or a water meter that keeps moving when everything is turned off.

Don’t try to compensate for a leak by increasing the pressure. Find the source of the water loss and have the damaged plumbing repaired.

#6 Check for Restrictions Inside Your Pipes

If the valve is open, the fixtures are clear and you still have poor flow across the house, the restriction could be inside the pipework.Corrosion, mineral deposits and other build-up can reduce the space available for water to move through a pipe. Older pipework can also develop internal restrictions over time.

Increasing the pressure won’t clear a restricted pipe. A plumber can inspect the system, locate the restriction and determine what part of the pipework needs attention.

#7 Keep Your Pressure-Limiting Valve Working

A pressure-limiting valve helps control the pressure entering your home. If it stops working properly, you could notice pressure that’s too high, too low or inconsistent.

If your water pressure has changed across several fixtures and the other common causes have been ruled out, have the valve checked. Don’t adjust the valve just to get a stronger shower. It needs to control the pressure at a suitable level for your plumbing and fixtures.

#8 Keep High Water Pressure Under Control

Pay attention if your water pressure suddenly becomes much stronger than normal, especially after maintenance or an interruption to the local water supply. You might also hear banging or hammering in the pipes when taps or appliances shut off. A sudden pressure change can contribute to this type of plumbing noise.

It’s worth understanding how high water pressure can affect your plumbing, as excessive pressure can place extra strain on pipes, flexible hoses, valves, fixtures and appliances over time.

If the stronger pressure continues after the local supply has returned to normal, have it checked. Don’t start adjusting pressure controls yourself just to bring the flow down. The right setting needs to work with your home’s plumbing, fixtures and other water uses, including garden irrigation.

#9 Rule Out Problems With the Water Supply

Water main work, local faults and periods of high demand can affect the supply reaching your property. If several fixtures lose pressure at the same time, check your water supplier for outages or planned works. You can also check if nearby properties are experiencing the same problem.

Do this before changing your plumbing. If the problem sits within the water network, adjusting anything inside your home won’t fix the cause.

What Good Water Pressure Does for Your Home 

Good water pressure gives you enough flow for everyday use without putting unnecessary stress on your plumbing. Keeping your water pressure under control can give you:

• Steadier water delivery around your home

• Less unnecessary strain on pipes, valves and fixtures

• Lower risk of pressure-related leaks and bursts

• Better control over unnecessary water use

• Less pressure-related noise from your plumbing

You don’t need the strongest possible pressure to get good performance. When the pressure is right for your home, taps and showers deliver the water you expect without putting extra pressure on the plumbing every time you turn them on. 

Good Water Pressure Requires Proper Maintenance 

Following these tips can help you maintain steadier water pressure across your home and catch changes before they turn into bigger plumbing problems. Regular checks can also help you spot leaks, restrictions, blocked fixtures or pressure-control issues earlier, while keeping excessive pressure from putting unnecessary strain on your plumbing.

You should have a better idea of what normal water pressure feels like in your home. If a shower suddenly loses flow, several taps start running weaker or the pressure becomes unusually strong, you’ll know there’s been a change worth investigating instead of simply putting up with it.