Low Water Pressure

Why Is My Water Pressure So Low?

Big B's Plumbing - Your Plumber for Life!

What could be worse than expecting a long steamy shower that’s met with an unsatisfying trickle of water? Or perhaps you’re trying to wash dishes, and you can’t get enough water pressure to rinse them effectively. Low water pressure can creep up on you over many years, or it could happen overnight. Whatever the problem, you’ll want to get to the bottom of it fast. When you think about it, good water pressure is part of our quality of life. Your plumbing technician will troubleshoot different areas of your plumbing system. Before you pick up the phone to call your plumber, you might be able to complete some troubleshooting of your own. Below are some of the general areas that low water pressure will affect and will most often require expert assistance from a plumber.

Did You Wake Up One Morning To Low Water Pressure?

If you woke up one morning to low water pressure, then it’s time to start asking neighbors if they have the same problem. If they do have the same issue, you may not need a plumber. First, you’ll need to call your municipal water district to update you about malfunctions with your municipal water supply. In some cases, a water main may break, causing everyone in the neighborhood to have low water pressure. You could also contribute it to construction in the area, especially if it’s only affected during specific times.  

Your Home’s Pressure Regulator Is Failing

A pressure regulator is a device that attaches to a home’s main incoming water supply. Its purpose is to regulate incoming water to a manageable level for appliances and fixtures. The normal water pressure of a home is between 45-65 psi. If your pressure exceeds 80 psi, state law requires you have one. High water pressure may seem like a luxury, but over time it could wreak havoc on pipes. The life expectancy of your water regulator is 10-15 years before it needs replacing. Most homes have a pressure regulator. If the regulator fails, you might notice a sudden spike or decrease in your home’s water pressure. Your plumbing professional will test for a broken water pressure regulator.

Low Water Pressure Regulator

A Shut Off Valve Is Partially Closed

Check both your water main shut-off valve and the water meter valve to ensure that they are both fully open. These valves can’t exactly close themselves, but if you’ve recently had work done to your home, you may have partially closed it. This is more common than you think. You can usually locate the home shut-off valve in the garage if the valve gets bumped, or even if a child tugs on it, it could slightly close. You can avoid a trip charge from your plumber by making sure your shut-off valve is wide open. 

Clogged Fixtures Can Cause Low Water Pressure

If the water pressure problem seems localized to just one fixture, then hard water mineral deposits have built up inside the aerator or showerhead. There might also be a clog in the line leading directly to that fixture. If it’s a showerhead, you can soak it in a vinegar solution overnight and remove the mineral deposits the next day. Aerators cost less than ten dollars, so it’s best to replace them altogether. If that doesn’t work, call a plumber to have the line checked.

Your Water Heater Is Malfunctioning

If the low-pressure problem only affects your hot water supply, the problem may be originating with your water heater. Ensure that the shut-off valve to the tank is fully open. If that doesn’t fix the problem, call your plumbing expert for help.

Your Pipes Are Old And Restricted By Mineral Deposits

Over time, old pipes water can become restricted by calcium and other mineral deposits found in hard water. The problem usually occurs in older homes that are over 40 years old. It’s not something that happens overnight, but you’ll see a gradual reduction in water pressure over many years. Copper pipes have a life expectancy of 40-60 years. Have your pipes inspected by a plumbing professional.

Your Plumbing Technician Will Precisely Locate The Problem

After you have completed any troubleshooting on your own, then it’s time to call your Big B’s Plumbing technician to precisely locate the problem. We only use the latest plumbing techniques and technologies. We’re an accredited A+ rated plumbing company with the Better Business Bureau.


Brandon and Family, Licensed plumbing contractor

Family Owned & Operated

My name is Brandon Mageno. I'm the founder, President, and CEO of Big B's Plumbing Company. As the founder, I never thought about being average or good. My passion for being the best plumbing company in Southern California has always been the same. Providing plumbing services to this great county is simply in my DNA. Nothing makes me happier than to see a satisfied customer. Learn More About Us

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I called Big B's Plumbing because I the hot water would not turn off in our master bathroom. I tried to turn the valve off under the sink and it broke off, so I had to shut off the main water to the house. It was noticeable the valves were original to the home. When I called, the rep stated that I would be informed about the service tech and their experience along with services offered "On The Spot". I was on a bit of a time crunch...
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