To increase water pressure in a specific bathroom, follow a targeted troubleshooting and modification process. Step 1: Unscrew the bathroom sink faucet aerator and showerhead, then soak them in white vinegar to dissolve mineral scale and clear trapped debris. Step 2: Ensure the individual hot and cold supply shut-off valves under the sink are opened completely. Step 3: Remove internal flow restrictors from the showerhead if local codes permit. Step 4: If whole-house pressure is low, adjust or replace your main pressure reducing valve (PRV). Verification: Test water flow at the sink and shower to confirm a steady, high-pressure stream.
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