Four Common Causes of Low Water Pressure

When low water pressure is isolated to only one or two places in a home—the primary bedroom shower, for example—it may be a fixture issue, not a water pressure problem.

Low water pressure doesn’t exactly qualify as a plumbing emergency, but it sure isn’t enjoyable. Anyone who’s ever fumed underneath a lackluster showerhead knows how frustrating a lack of pressure can be. But what causes low water pressure, and what can be done to resolve the problem?

Low water pressure is something clients ask their plumbers with regularity. The good news is that it’s not something homeowners have to tolerate. Here are four common causes of low water pressure.

It’s the fixture’s fault

When low water pressure is isolated to only one or two places in a home—the primary bedroom shower, for example—it may be a fixture issue, not a water pressure problem. Over time, fixtures (and, in some cases, the pipes that service them) can become clogged with rust, limestone, or calcium deposits. The gradual reduction in water flow can result in too-low water pressure at the source and can often be solved simply by installing an updated fixture.

Insufficient supply from the main line

If the entire property is experiencing low water pressure, particularly if the change is sudden, it may not be receiving enough water from the main supply line. A home’s water main line is subject to local ordinances on size and connection type, but those regulations aren’t always adhered to as they should be. For example, did the water pressure change when a new apartment building opened down the block? Do all the neighbors complain about water pressure, too? An expert plumber can help determine whether the main supply line is adequate for a home’s needs.

Closed valves drop the pressure

The water flow in most homes is controlled by two shut-off valves, one on or near the meter at the other at the house. If one of the valves becomes closed for some reason, like a city employee inadvertently shut the one on the meter, or one of the kids hit the intake valve with a basketball, the home may experience a sudden drop in water pressure.

Pipes that need servicing

Never underestimate the power of plumbing pipes. Pipes’ functionality can degrade for several reasons. Pipes clogged by paper, hair, or even mineral buildup will likely reduce the water flow. Likewise, corroded pipes in older homes can leak water as they transport it, decreasing the amount of water that eventually comes out. A plumber can help determine for sure whether it’s time for a replacement.

If the water pressure is low, contact a reputable plumber to inspect the system. They can pinpoint the problem and offer solutions.

Evenflow Home and Commercial Services of San Antonio offers impeccable house cleaning services, professional plumbing, electrician services, HVAC installation, maintenance, and repair. Our technicians offer 24-hour emergency electrical and HVAC service for San Antonio, Schertz, Converse, Floresville, Elmendorf, and more. Call us at (210)941-3503.

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