Water pressure in Bellevue and Eastside homes

Water pressure problems in a Bellevue home split into two opposite cases: too little and too much. Low pressure at one fixture is usually a clogged aerator or cartridge; low pressure across the whole house points at the pressure-reducing valve (PRV), a partly closed main, or failing galvanized supply lines. High pressure — common where the city main runs strong — quietly stresses every fixture, valve, and the water heater until something bursts, which is exactly what the PRV exists to prevent. This section covers how to test your pressure, what the PRV does and where it fails, and how to trace low flow to its real source.