What causes low water pressure in a house?

Low water pressure may be caused by clogged aerators, partially closed valves, leaks, pipe buildup, or municipal water supply issues.

Why is only one faucet losing pressure?

If only one faucet has low pressure, the faucet aerator may be clogged with debris or mineral buildup.

Can a plumbing leak cause low water pressure?

Yes. Hidden plumbing leaks may reduce pressure and can also cause high water bills or water damage.

When should I call a plumber for low water pressure?

Call a plumber if low pressure affects the whole home, appears suddenly, keeps returning, or is accompanied by leaks or water damage.

Why Is My Water Pressure Low?

Low water pressure can make showers frustrating, slow down sinks and appliances, and sometimes signal a larger plumbing problem. In South Florida homes, low pressure may be caused by clogged aerators, partially closed valves, leaks, old piping, or city water supply issues. Try these safe troubleshooting steps first. If the issue continues, Amy’s Plumbing can help.

Schedule Online Call Now: 954-530-0241

Common Causes of Low Water Pressure

Clogged Faucet Aerators

Mineral buildup inside faucet aerators can restrict water flow at sinks.

Partially Closed Valves

Main shut-off valves or fixture valves that are not fully open can reduce pressure throughout the home.

Pipe Problems

Older pipes, corrosion, or hidden leaks may reduce water flow over time.

Municipal Water Issues

Temporary city maintenance or neighborhood water supply issues can affect pressure.

Step 1: Check Whether the Problem Is Everywhere

Turn on multiple faucets and showers throughout the home. Determine whether low pressure affects:

Only one fixture
Only hot water
Only one bathroom
The entire house

This helps narrow down whether the issue is local to one fixture or part of a larger plumbing problem.

Step 2: Clean Faucet Aerators

If only one faucet has low pressure, the aerator may be clogged with debris or mineral buildup.

Carefully unscrew the aerator from the faucet tip and rinse it clean. If buildup is heavy, soaking the aerator briefly may help loosen debris.

Avoid overtightening when reinstalling the aerator.

Related guide: How to Clean a Faucet Aerator

Step 3: Check the Main Water Valve

Make sure the home's main water shut-off valve is fully open. A partially closed valve can reduce pressure throughout the house.

If you are unsure where the valve is located, review: Main Water Shut-Off Valve Guide

Step 4: Look for Signs of a Leak

Low water pressure combined with damp spots, higher water bills, or sounds of running water may indicate a hidden plumbing leak.

Signs to watch for include:

Wet drywall or flooring
Water stains
Mold or mildew smells
Unexpectedly high water bills
Warm spots on floors

When Low Water Pressure May Need a Plumber

Problem	Possible Cause
Pressure low throughout house	Main valve, leak, or pipe issue
Only hot water has low pressure	Water heater or supply issue
Pressure suddenly dropped	Leak or municipal supply problem
Recurring pressure problems	Older plumbing or buildup inside pipes

Helpful Related Plumbing Guides

Need Help Diagnosing Low Water Pressure?

Try these safe troubleshooting steps first. If low pressure continues, appears suddenly, or affects the whole home, Amy’s Plumbing can help homeowners throughout Broward County and nearby South Florida cities.

Schedule Online Call Now: 954-530-0241

Amy’s Plumbing
Florida Plumbing Contractor License: CFC1429784
Email: [email protected]