Low water pressure: Common causes and what to check

Introduction

Low water pressure can make showers frustrating, slow down faucets, and affect everyday tasks. Sometimes the cause is limited to one fixture; other times, it may point to a problem affecting the wider plumbing system.

1. Check whether one fixture is affected

If only one faucet or shower has weak flow, the aerator or showerhead may be blocked by mineral deposits or debris. Follow the manufacturer's instructions for cleaning accessible parts.

2. Check other fixtures

Turn on a few faucets in different parts of the property. If several fixtures have low pressure, the cause may be related to the water supply, a valve, a leak, or another issue in the plumbing system.

3. Look for signs of a leak

Unexplained dampness, water stains, or an unexpected increase in water use may suggest a leak. Some leaks are hidden, so the absence of visible water does not rule one out.

4. Consider mineral buildup

Mineral deposits can restrict water flow through faucet aerators, showerheads, and some pipes. If cleaning a fixture does not improve the flow, the problem may be elsewhere.

5. Check for recent changes

Think about whether the pressure changed after plumbing work, construction nearby, or a disruption to the water supply. If neighbors are experiencing the same issue, the problem may be outside your property.

6. Notice when the pressure changes

Does pressure drop only when another faucet is running, or is it weak all the time? Does the problem affect hot water, cold water, or both? These details can help a plumber narrow down the cause.

When should you call a plumber?

Arrange professional help if low pressure affects multiple fixtures, appears suddenly, keeps returning, or comes with signs of a leak. Avoid adjusting unfamiliar valves or dismantling plumbing equipment if you're unsure what it controls.

Quick takeaway

Start by checking whether the problem affects one fixture or the whole property, and note whether hot and cold water are both affected. These observations can help identify the next step without guessing at the cause.

Need help with low water pressure?

PLUMBING 24/7 helps homeowners and businesses in Kennesaw and North Metro Atlanta investigate plumbing issues and find practical solutions.

Call (770) 555-0148 or request service.

Related articles

• How to tell if you have a hidden water leak

• 7 plumbing problems you shouldn't ignore