Low Water Pressure? Here Are 8 Causes and How to Fix Them
Low water pressure is one of the most common—and frustrating—plumbing problems homeowners deal with. It’s more than just a minor annoyance; it can throw off your entire routine, from doing the dishes to getting through your morning shower.
If you've noticed a change in pressure around the house, there’s usually a reason behind it. Let’s walk through some of the most common causes and what you can do about them.
High Household Water Demand
If all of your water-dependent appliances—such as the dishwasher, washing machine, and shower—are all running at the same time it can strain your home's water supply, leading to reduced pressure. To avoid this, try spacing out your water-heavy tasks, especially during peak times like mornings or evenings.
Fixture and Appliance Issues
Mineral buildup in faucets, showerheads, and even your water heater is a common culprit behind low water pressure—especially if you live in a hard water area. Over time, these deposits can clog fixtures and reduce flow. Cleaning or replacing them is usually a quick fix, and it’s also a good idea to flush your water heater regularly to prevent sediment from slowing things down. Curious how hard the water in your area is? Check out this Water Hardness Map from HydroFlow.
Partially Closed Shutoff Valves
The main water shutoff valve controls the flow of water into your home. If this valve is not fully open, it can restrict water pressure throughout the house. Similarly, individual shutoff valves located near sinks and toilets should be checked to ensure they are fully open if you're experiencing localized pressure issues.
Malfunctioning Pressure Regulator
A pressure regulator is designed to maintain consistent water pressure entering your home. If this device fails, it can cause pressure to be too high or too low. Testing the pressure with a gauge can help determine if the regulator is functioning correctly. If a malfunction is detected, replacing the pressure regulator may be necessary.
Pipe Corrosion and Blockages
Older pipes, especially those made of galvanized steel, are susceptible to corrosion over time. This corrosion can lead to blockages that impede water flow, resulting in decreased pressure. In such cases, inspecting the plumbing system and replacing corroded pipes with newer materials like copper or PEX can resolve the issue.
Leaks in the Plumbing System
Undetected leaks can divert water away from your fixtures, causing a noticeable drop in pressure. Signs of leaks include unexplained increases in water bills, damp spots on walls or ceilings, and the sound of running water when all fixtures are turned off. Addressing leaks promptly not only restores water pressure but also prevents potential water damage to your home.
Municipal Water Supply Issues
Sometimes, the problem lies beyond your property. Municipal water supply issues, such as main breaks or maintenance work, can lead to temporary reductions in water pressure. If you notice a sudden drop in pressure, it's advisable to check with your local water provider to see if there are known issues in your area. You can also find out who supplies water to your property and get more details about your local water source through the Texas Commission on Environmental Quality (TCEQ).
Professional Help for Stubborn Water Pressure Problems
Addressing low water pressure involves identifying the underlying cause and implementing appropriate solutions. Regular maintenance of your plumbing system, timely repairs, and consulting with professional plumbers when necessary can help ensure a steady and reliable water flow in your home.
Still not sure what’s causing your low water pressure? The pros at Pilot Plumbing are here to help. Contact us today to schedule an inspection and get your water flowing the way it should.