Why is the Water Pressure Low?

There are numerous potential causes for low water pressure, and with some troubleshooting, it may be possible to identify the issue independently.

Attempting to enjoy a nice, hot shower can become frustrating when the water merely trickles out. Low water pressure not only disrupts daily activities but may also signal more serious plumbing issues. There are numerous potential causes for low water pressure, and with some troubleshooting, it may be possible to identify the issue independently. Here is how to troubleshoot low water pressure.

Step One: Identify Where the Low Water Pressure Is

Is the low water pressure isolated to the shower, or is it a problem throughout the home? Inspect various water outlets, from the showerhead to the kitchen sink to the outdoor faucet. This will help determine whether the issue is localized or affects overall water pressure. Also, test both hot and cold water; if the problem only occurs with hot water, this may indicate an issue with the hot water heater.

Step Two: Address Problem Areas

If low water pressure is confined to one or two areas, it's likely due to a clogged faucet or aerator. To resolve this, remove the faucet's end and check the aerator for buildup. Clean the aerator by soaking it in a mixture of vinegar and water or replace it if necessary. Before installing a new aerator, run the water to see if the pressure improves; if not, this may point to a more extensive problem with the plumbing.

Step Three: Address Overall Issues

The problem might be more generalized within the plumbing system. Here are some simple, common issues that could be causing low water pressure.

PRV or Water Shut Off Valves

Check the Pressure Reducing Valve (PRV), which is typically found where the main water line enters the home. This bell-shaped valve can be adjusted by turning the screw on the valve clockwise to increase water pressure or counter-clockwise to decrease it. If the valve is damaged, it might need replacement.

Next, inspect the water shut-off valve near the water meter. Even a slight adjustment can affect water pressure. Ensure this valve is fully open, and then test the faucets to see if the pressure returns to normal, which would suggest that one of these valves was the problem.

Leaks

Inspect the home for leaks, starting with the toilets. Add some food coloring to each toilet tank and wait an hour. If the color can be found in the toilet bowl, it indicates a leak.

If you need a licensed, bonded, insured plumber for your Phoenix area leak or your next plumbing project, call MNS Plumbing today at 602-362-4524.