Low water pressure is a common aggravation in many households. Fortunately, the fix can be simple. But first, you need to understand the common causes in order to address the problem effectively. Here’s what you should know.
Causes of Low Water Pressure
A normal water pressure for a typical home ranges from 45 to 80 PSI. You can use a test gauge from your local hardware store to measure the pressure at an outdoor spigot or laundry tub faucet. If your reading falls below 40 PSI, it’s time to investigate. Here are the common culprits.
Water Demand
Low water pressure may simply result from high demand within your household. When multiple taps or appliances are running at the same time, pressure can drop noticeably. That’s because every home’s plumbing system has a maximum flow capacity at a specific pressure, supplied by the municipal water system. When several fixtures operate simultaneously, the available pressure is divided among them, resulting in a reduction of flow at each point of use.
Faulty Shut-Off Valve
A shut-off valve is a component of the plumbing system that regulates the flow of water in a home. This is what you turn to cut off the water supply during a plumbing emergency or when closing up your house for an extended vacation. It’s often located in the utility room or near the outside hose spigot.
There are several reasons that could cause it to malfunction, including physical damage, mineral and rust deposits, corrosion, wear and tear, ice buildup, and frequent pressure imbalances. Inspect it to see whether it’s fully open and functioning properly. A partially closed or stuck valve can restrict water flow and mimic low pressure. If the handle is difficult to turn or the valve shows signs of corrosion or leakage, it may need cleaning, lubrication, or replacement.
Plumbing Fixture Issues
Faucet fixture aerators, which are designed to conserve water without compromising water pressure, can be a source of low pressure. These components are prone to buildup from rust, sediment, and limestone. When clogged, they restrict water flow at the fixture, even if pressure elsewhere in the plumbing system is normal. This problem is more common in homes with a hard water supply.
Clogged Pipes
When sediment accumulates inside pipes, it narrows the internal diameter, reducing the volume of water that can pass through at a given time. Remember, to generate adequate pressure, a consistent and sufficient volume of water must reach the fixture. However, if the amount of water reaching the outlet is less, it won’t create enough pressure to generate a powerful stream.
Leaking Pipes
Leaky pipes are one of the most common causes of low water pressure. As mentioned earlier, there needs to be a consistent and sufficient volume of water flowing through the pipes at a given time to generate a powerful stream at the faucet. If your plumbing system is losing water through cracks, holes, or loose joints, you’ll experience low water pressure.
Watch out for other signs of water leaks, such as damp spots behind walls, under floors, or outdoor lines, mold growth (musty odors), and unexplained spikes in your water bills. If you have a strong suspicion of a leak, shut off the main water supply and call for professional inspection.
Faulty Pressure Regulator
Your plumbing system has a pressure regulator that controls the water pressure entering your home. If the regulator fails or is improperly set, it can cause pressure to drop below optimal levels.
How to Fix Low Water Pressure
Some causes of low water pressure can be resolved with simple DIY steps, while others require professional repair. For example, you can reduce high demand by turning off unnecessary taps or delaying the use of multiple appliances at once. You can also replace clogged aerators in faucets by simply unscrewing them and installing new ones or cleaning out sediment or mineral buildup with vinegar.
For complex issues such as leaky pipes, malfunctioning pressure regulators, corroded or damaged shut-off valves, and sediment buildup, be sure to call a licensed plumber. A professional has the experience, tools, and expertise to quickly and accurately diagnose the root cause of the problem and recommend the most effective solutions, including how to increase water pressure. Attempting to fix these problems without proper training can lead to further damage, higher repair costs, safety hazards, or warranty voidance.
Contact Cranney Home Services for All Your Home Plumbing Issues
If you’re dealing with low water pressure in your home, reach out to Cranney Home Services for fast, reliable repairs. We offer same-day emergency service throughout the North Shore and the greater Massachusetts area. Our experts are licensed, certified, and have over 40 years of experience in the plumbing industry.
Call Cranney Home Services today to fix low water pressure issues in your home in North Shore.