Water Pressure Fluctuating — Possible Leak or Supply Issue
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Common Water Issue in BC

Water Pressure Fluctuating — Possible Leak or Supply Issue

Fluctuating water pressure in BC homes may indicate a leak, municipal supply issue, or pressure regulator problem requiring investigation.

Possible Causes

  • Underground service line leak affecting available pressure
  • Failed or failing pressure reducing valve (PRV)
  • Water hammer arrestor failure causing pressure spikes
  • Municipal water main flushing or pressure changes
  • Partially closed valve in supply system

Recommended Steps

  • 1Check if pressure fluctuation affects all taps or specific ones only
  • 2Install pressure gauge on hose bib and monitor over several days
  • 3Check pressure during high-use periods (morning/evening) vs low-use
  • 4If pressure drops significantly when multiple taps are on, possible leak or undersized supply
  • 5Call professional leak detection if fluctuation is accompanied by bill increase

Need Professional Help?

Don't let a small leak become a big problem. Contact LeakInspections.ca — a division of Anyleak.ca and Leak.ca — for expert diagnosis.