Check that the main shutoff valve is fully open
Check that the water meter valve is fully open
Clean or replace clogged faucet aerators
Clean or replace showerheads
Inspect and replace clogged supply lines
Check for leaks in pipes, fixtures, and toilets
Replace corroded or old galvanized pipes
Install a pressure-boosting pump
Install a pressure tank
Adjust or replace the pressure-reducing valve
Check the municipal water pressure
Contact your water utility if street pressure is low
Reduce simultaneous water use in the house
Upgrade undersized plumbing lines
Flush the water heater
Replace a failing well pump
Service the well pressure switch
Increase well pressure tank settings if appropriate and safe
Install a whole-house water filtration system if filters are restricting flow
Have a licensed plumber inspect the system