Low Water Pressure from the Kitchen Faucet: Causes & Fixes

Luckily, low water pressure from a kitchen faucet usually stems from identifiable causes with straightforward solutions. Understanding what creates the problem is the first step to determine whether you’re facing a five-minute DIY fix or a situation requiring professional attention.

In this brief article brought to you by Texas Rooter, we highlight the most common reasons kitchen faucets lose pressure, and what typically solves the problem. If you’d rather consult a trained plumber, then contact Texas Rooter to get in touch!

Common Culprit #1: Clogged Aerator

The aerator is the small screen attachment at the very tip of the faucet spout. It mixes air with water to create a smooth and splash-free stream of water. Over time, mineral deposits from hard water accumulate in this fine mesh screen and block water flow.

This doesn’t happen overnight. The buildup process is gradual, so pressure drops slowly over weeks or months. Eventually, the screen becomes so clogged that water barely flows through.

The fix is simple enough: Unscrew the aerator from the faucet spout, disassemble the aerator and soak all parts in white vinegar for 30 minutes to dissolve mineral deposits, and rinse everything thoroughly before reassembling and screwing it back on.

Common Culprit #2: A Blocked Cartridge or Faucet Valve

Inside the faucet handle is also a cartridge or valve that regulates water flow. Sediment, corrosion, or worn internal components can restrict movement and reduce pressure. Unlike an aerator, internal faucet components require partial disassembly to access.

This isn't technically difficult, but it is not simple, and it requires identifying the correct cartridge for the specific faucet model. Many homeowners find cartridge replacement frustrating and leave it to a plumber instead.

Common Culprit #3: Partially Closed Shutoff Valves

Check under your kitchen sink and you’ll find two shutoff valves: one for hot water and one for cold. These valves allow you to stop water flow to the faucet without shutting off water to the entire house. If someone partially closes one during previous work and forgets to reopen it fully, pressure drops.

Turn both valves fully counterclockwise until they stop. If one or both weren't fully open, water pressure should improve immediately. If a valve won't turn or feels stuck, don't force it. Old valves can break off when forced.

Common Culprit #4: A Problem With the Supply Lines

The flexible water supply hoses beneath the sink sometimes kink or clog. If both hot and cold water run weak, the supply lines deserve inspection. If only one side runs slow, the issue may lie in that specific line or shut-off valve.

When you call for low water pressure repair, the plumber in Grand Prairie will disconnect the lines, test flow, and determine whether replacement is the move.

Common Culprit #5: A Leak Somewhere in the System

Sometimes kitchen faucet pressure problems actually reflect deeper plumbing issues affecting the entire house – or neighborhood. Corroded or leaking main supply lines, water pressure regulator failures, or municipal supply problems are a few that come to mind.

If your low water pressure issue is not restricted to the kitchen faucet alone, and instead affects multiple or all fixtures, then it's a whole-house issue. Whole-house pressure problems often need professional assessment, and the pros at Texas Rooter are here to help.

Hire a Local Plumber Today

If you’re dealing with low water pressure, or any plumbing issue for that matter, and are looking for uniformed and trained plumbers, then consider the pros at Texas Rooter. Our office team is on standby to schedule you a flexible appointment or arrange urgent plumbing repair service for as soon as possible.