1. Clogged Pipes: Mineral buildup restricts flow. Fix: Professional cleaning or pipe replacement.
  2. Leaks: Even small leaks reduce pressure. Fix: Find and repair leaks.
  3. Old Fixtures: Outdated faucets and showerheads slow water flow. Fix: Replace fixtures.
  4. Main Water Supply Issues: Whole-home pressure issues may be due to the main supply. Fix: Check the main valve or contact your water provider.
  5. Pressure Regulator: If it’s faulty, pressure drops. Fix: Adjust or replace the regulator with a plumber’s help.

For quick diagnosis and repairs, consult a plumber.