Low Water Pressure, Its Causes, And Potential Fixes

14 December 2021
 Categories: , Blog

As a homeowner, you're bound to face problems with your domestic plumbing system from time to time. Each of these problems is caused by different factors and will require different repair methods. One of the most common plumbing issues to watch out for is a drop in your water pressure.

If your taps start taking too long to fill up a bathtub or washing machine, chances are high that your water pressure is low. Highlighted below are some common culprits behind reduced water pressure in homes, as well as recommendations on potential corrective actions.

Main Water Shutoff Valve Not Fully Open

Usually located in the ground in the front yard or near the curb in front of your house, the water meter is used to measure how much water you've used over a certain length of time. It is a valve that is used to control water flow into your home. This valve is known as the water meter valve.

After the water travels through the water meter valve and water meter, it enters your home via the main shutoff valve. If the water pressure throughout your house seems to have dropped after you completed some work on your domestic plumbing, it's likely that this valve isn't fully open.

Check the valve to confirm that it is fully open. If it's partially closed, open it fully by turning it counterclockwise as far as it will go.

Individual Fixture Valves Not Fully Open

If the water pressure issue is unique to particular water fixtures and doesn't affect all fixtures within your house, then only the affected fixtures will need to be checked.

Begin the troubleshooting process by checking if the individual plumbing valves connected to these water fixtures are fully open. If not, open them fully by turning them in the counterclockwise direction — just like you would with a partially closed main water shutoff valve.

Corroded Pipes

If the pipes used to supply water to your home are made of cast iron, galvanized steel, or copper pipes, you may experience low water pressure due to corroded pipes. 

All metal pipes are susceptible to corrosion, which weakens the pipes and causes them to develop leaks. These leaks reduce the amount of water that gets delivered to your taps, showerheads, and other water fixtures.

If you live in an older house and suspect that your water supply lines may be corroded, you should have the pipes inspected and replaced if necessary.

Understanding the various causes of low water pressure and its potential fixes can help you know where to look and what to do if you experience the problem in your home. But if you need professional assistance with getting your water pressure back to normal, never hesitate to contact a local plumber.