How to Shut Off Your Water Main

Every homeowner should know two things: where the main shut-off is, and whether it actually turns. Both are 60-second checks.

Common causes

• Original ball valve failed or seized
• Gate valve stem broken
• Valve buried behind stored boxes
• No accessible curb stop

Step-by-step

1. 01Trace the water meter to the shut-off — usually within 3 feet on the house side
2. 02Turn clockwise until fully closed — 90° for ball valves, several turns for gate
3. 03Open a lowest-level tap to confirm supply stops
4. 04If the valve doesn't hold, plan for a same-day replacement

When to call Northbridge

• Valve leaks when you close it
• Handle spins with no resistance (gate stripped)
• No accessible main shut-off inside
• You want a modern ball valve installed