Water Main Shutoff Valve: lifespan, maintenance and replacement

Typical lifespan: 20–30 years (about 25 years).

Maintenance schedule

• Turn valve on/off to prevent seizing — Every 6 months
• Inspect for corrosion or leaks — Annually

Signs it needs replacing

• Valve won't fully close
• Leaking around handle
• Corrosion or mineral buildup
• Seized and won't turn

Tips

Know where your shutoff valve is before an emergency. Practice turning it so it doesn't seize.