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HearthDry

Find & Test Your Main Water Shutoff Valve

Every homeowner must know where the main water shutoff is. A 1-inch pipe releases 650+ gallons per hour — locate and test your valve today.

Your main shutoff is typically: (1) where the water line enters your home — often in the basement, crawl space, or utility room; (2) at the water meter near the street; or (3) in a meter box at the property line.

Test the valve annually by turning it off and checking that water stops at all fixtures. Stuck valves are common — apply penetrating oil and use two wrenches if needed. Tag the valve location for all household members.

Smart shutoff valves can close automatically when leaks are detected — see our smart leak detection guide for whole-home options.

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Frequently Asked Questions

Where is my main water shutoff?
Usually where the main line enters the house (basement/utility room), at the water meter, or in a curb box at the street. Check your home inspection report.
How do I turn off water to my whole house?
Turn the main valve clockwise (righty-tighty). For gate valves, turn until tight. For ball valves, turn 90° so the handle is perpendicular to the pipe.