Low Water Pressure? A Room-by-Room Troubleshooting Guide

Low water pressure is one of the most common complaints we hear — and the cause ranges from a two-minute fix to a supply-line issue. Start by narrowing it down.

Is it one fixture or the whole house?

If only one faucet is weak, the problem is local:

• Unscrew the aerator and clear the mineral debris.
• For showers, soak the head in vinegar overnight to dissolve scale.

If every fixture is weak, the problem is system-wide.

Whole-house checks

1. Check the pressure-reducing valve (PRV) near where the main line enters. These fail over time and can be adjusted or replaced.
2. Test the main shutoff — a partially closed valve throttles the whole house.
3. Ask a neighbor. If their pressure is low too, it's a municipal supply issue.

When to call

A sudden, whole-house pressure drop can signal a leak or a failing regulator. If the simple checks don't restore it — or pressure is high enough to hammer the pipes — a technician can measure static pressure and diagnose the regulator in one visit.