Quick answer: If water pressure is low, first test it with a gauge (aim for 45–60 psi). Common fixes: clean clogged aerators and shower heads, fully open the main shut-off, or adjust/replace the pressure-reducing valve. For water quality, a filter solves taste, chlorine, and sediment.
Complete guide to home water pressure and quality, by a licensed plumber.
Step 1: Measure Your Pressure
Screw a water pressure gauge onto an outside spigot. Below ~40 psi is low; above ~70 is high and damages fixtures.
Step 2: Easy Fixes for Low Pressure
Most “low pressure” is a clogged aerator or shower head — clean or replace it. Check that the main shut-off and meter valve are fully open.
Step 3: Pressure-Reducing Valve
If the whole house is off, the PRV where the main enters may need adjusting or replacing. High pressure stresses every joint and appliance.
Step 4: Improve Water Quality
Add an under-sink filter for drinking water or a shower head filter for chlorine.
Step 5: Protect Against Leaks
A water leak detector near the heater, washer, and sinks catches leaks before they flood.
Related Water Guides
- Best High-Pressure Shower Heads in 2026 (Boost Weak Water Pressure)
- Best Under-Sink Water Filters in 2026 (Clean Drinking Water for Under $30)
- Best Water Leak Detectors for Homeowners in 2026 (Prevent Flood Damage)
- Best Shower Head Filters in 2026 (Remove Chlorine and Hard Water)
- Best Water Pressure Gauges for Homeowners in 2026
FAQ
What is normal home water pressure?
About 45–60 psi is ideal. Below 40 is low; above 70–80 psi should be reduced.
Why is my water pressure suddenly low?
Usually a clogged aerator or shower head, a partly-closed shut-off, or a failing pressure-reducing valve. Test with a gauge.
How can I increase my shower pressure?
Clean or replace the shower head (mineral buildup is the usual cause) and remove any flow restrictor if pressure is low.