Turning on the shower and being met with a weak dribble in place of a gushing flow is as frustrating as it is relatable.
Low water pressure is a common problem that can occur for several reasons. But the good news is that there are some simple steps you can take to resolve it.
In this guide, we'll explore some of the reasons why your shower pressure might be low, offer step-by-step solutions to fix it, and explain when it's best to contact a qualified plumber.
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Why is my shower pressure low?
How to increase shower pressure: Step-by-step guide
When to call in a JustFix professional
FAQs about low shower pressure
Why is my shower pressure low?
Low shower pressure can occur for a number of reasons, including issues with the shower head, the pipes, the source of the water, and the water valve. Here are some of the reasons why you might be experiencing low water pressure:
1. A blocked shower head
A common cause of low shower pressure is a blocked shower head. Over time, limescale and sediment can build up inside the shower head, decreasing the water flow. This problem is especially likely in areas with hard water. If you’re not sure whether this applies to your home, read our hard water vs soft water guide.
If your shower pressure is low but the water flow to your bathroom/kitchen taps and other showers is fine, there's a good chance a blocked shower head is the culprit.
2. Water valve or regulator issues
If the main water valve or your home's internal water valves aren't fully open, this can restrict water flow. Sometimes, valves are only partially turned on after plumbing repairs, limiting the pressure. Furthermore, some shower heads have water-restrictive valves designed to save water. If you already have low water pressure, the valve could be limiting the water flow too much.
Some homes are equipped with a pressure regulator. If the regulator is faulty or set too low, it can cause reduced water pressure in your shower and throughout your home.
3. Old or faulty pipes
Some homes, especially older ones, may have narrow pipes or worn internal plumbing restricting water flow.
Steel or iron pipes are subject to corrosion and rusting, and sometimes, rust can build up to make blockages. As they do in a shower head, limescale and sediment can also collect on the inside of pipes. These blockages can restrict the flow of water, leading to low pressure.
4. Water supplier issues
If your entire house is experiencing low water pressure, the problem might be coming from the source itself. A problem with your water source or local water supplier can reduce the flow rate.
If you suspect this is the case, check with your neighbours to see if they are experiencing similar issues.
5. Leaks in the pipes
Low water pressure can be a sign of leaky pipes. When water escapes through one or more leaks, less water reaches your shower, making the pressure weaker.
Identifying the cause of low water pressure can be the first step towards resolving it. If you think you know the problem, keep reading to find out how to solve it. If you're struggling to understand the issue, you can troubleshoot by trying the next steps.
How to increase shower pressure: A step-by-step guide
Step 1: Clean the shower head
If you suspect a blocked shower head could cause low pressure, or you're unsure what the problem is, start by cleaning your shower head. Follow these steps:
- Remove the shower head: Unscrew the shower head from the shower arm or hose.
- Soak in vinegar: Submerge the shower head in a container filled with white vinegar. Let it soak for at least 30 minutes, or overnight for tougher clogs.
- Scrub the shower head: Use a toothbrush to gently scrub the shower head and remove any remaining deposits, making sure to get into the nozzles and crevices.
- Rinse and reattach: Rinse the shower head with clean water and screw it back onto the shower arm or hose.
Make sure to check out our comprehensive how to clean a shower head guide for more detailed instructions. If a clog is the reason for low shower pressure, your water flow should have resumed after taking these steps.
Step 2: Open the valves
Ensure that both your main and internal water valves are fully open.
The main water valve is typically located near your water meter, whilst internal valves are usually found near where water enters your home. Ensure both of these valves are turned counter-clockwise to the fully open position.
Step 3: Inspect the pressure regulator
If your home has a pressure regulator, it may be responsible for limiting water pressure.
To check this, first locate the pressure regulator. It's usually found near the main water shut-off valve. Use a pressure gauge to test your water pressure. Adjust the regulator to increase pressure if it's below 40-60 psi.
If adjusting the pressure doesn't help, you may need to replace the regulator. This is often a job best left to a professional. With JustFix, you can find and book a reliable, qualified tradesperson in minutes. Our accredited plumbers can inspect your pressure regulator, determine if you need a new one, and, if necessary, replace it for you.
Step 4: Check for leaks
Check for visible signs of leaks in your plumbing system and look for signs of disguised leaks such as:
- Moisture or water stains on walls, ceilings, or floors
- Unusual water bills, being charged for more water than you’re using could indicate a hidden leak
- Dripping sounds or sounds of running water even when taps are turned off
If you suspect a leak, getting it fixed as soon as possible is crucial. When you book a local plumber using JustFix, a trusted tradesperson can come to your rescue in as little as 30 minutes. Our accredited plumbers are experts in fixing leaky pipes, so if that's what's obstructing your water flow, your shower pressure will be back to normal in no time!
Step 5: Install a new shower head, shower pump, or power shower
If your home is suffering from low water pressure and these solutions haven't resolved the water flow, consider installing a new shower head, shower pump, or switching to a power shower.
A shower pump can boost water flow to your shower, even in homes with low pressure due to old plumbing systems. A power shower combines water from both hot and cold supplies, using an internal pump to increase flow. Specialist high-pressure shower heads could also solve this problem.
Many of these systems are suitable for home installation. However, if the product you purchase advises enlisting a professional or you don't feel confident installing it yourself, our JustFix plumbers are just a few clicks away.
When to call in a JustFix professional
Sometimes, low shower pressure requires more than a DIY solution. If you've tried the above steps and your shower pressure isn't increasing, it might be time to hire a professional. Contact a plumber if:
- You’ve ruled out clogs, valve, and pressure regulator issues
- You suspect a leak and need help fixing it
- You suspect the issue is related to your home’s plumbing system
- You want to install a new piece of equipment, replace old pipes, or replace a pressure regulator
- You’re experiencing low pressure in multiple areas of your home
Our network of accredited plumbers is experienced in diagnosing and resolving all types of plumbing issues, including low water pressure. Simply fill in some details about the job at hand and we'll match you to one of our Fixers, quoting a fixed hourly rate for their services.
With tradespeople located across the country, it's never been quicker or easier to find and book a trusted Fixer. Plus, all work comes with a 12-month guarantee, so you can relax knowing that whatever we fix stays fixed.
FAQs about low shower pressure
Can a shower head cause low shower pressure?
Low-flow and water-saving shower heads can cause low water pressure. They’re designed to restrict flow to reduce water waste and heating costs. shower heads that are specially designed with features to improve low water pressure can increase flow and solve the problem.
Can you remove the flow restrictor from a shower head?
Yes, you can remove the flow restrictor from a shower head, but it's generally not recommended. Doing so can cause the shower head to surpass the national standard for maximum flow rate, and you could damage your shower head in the process of removal.
However, if your shower head is designed with a removable flow restrictor, it shouldn’t cause problems when removed. Make sure to check the manual for instructions and be wary of the impact this will have on water consumption.
