How to test your home water pressure

Water pressure is the hidden backbone of your home's plumbing system. When it is too low, your shower feels like a trickle and your appliances struggle to draw water effectively. When it is too high, you risk silent, destructive damage to your pipes, valves, and water heater, eventually leading to costly leaks behind your walls. Testing your pressure is a five-minute task that can save you thousands in plumbing repairs. A healthy residential system typically runs between 40 and 60 PSI. Anything consistently above 80 PSI is considered dangerous and requires immediate intervention with a pressure regulator. Armed with a simple gauge, you can diagnose these issues long before they manifest as a burst pipe.

1. Find Your Main Water Entry Point. Find the exterior hose bibb closest to the main water line coming into the house. Ensure all other water-consuming fixtures, like washing machines or dishwashers, are turned off.
2. Secure the Pressure Gauge. Remove any garden hose currently attached to the bibb. Screw the water pressure gauge directly onto the threaded end of the bibb, ensuring it is tightened securely by hand.
3. Activate Water Flow Slowly. Open the hose bibb handle slowly until it is turned all the way to the open position. Watch the needle on the gauge as it rises to your home's static pressure.
4. Capture Your Pressure Number. Note the highest number the needle reaches. Tap the gauge lightly with your finger to ensure the needle hasn't stuck due to friction.
5. Safely Disconnect and Preserve. Close the hose bibb valve completely. Carefully unscrew the gauge, keeping it upright to allow any remaining water to drain out.
6. Interpret Your Results Now. Compare your reading to the standard 40-60 PSI range. If your pressure is above 80 PSI, contact a professional to inspect your pressure reducing valve.