Turn off all water-using fixtures and appliances in the home
Attach a water pressure gauge to an outdoor hose bib or laundry faucet
Make sure the faucet is fully closed before attaching the gauge
Open the faucet fully to let water flow into the gauge
Read the pressure shown on the gauge in psi
Check multiple faucets if needed to compare readings
Test at different times of day for consistency
Compare the reading to the normal home water pressure range
Record the result for future reference