Locating the Valve That Stops Your Water

Topic

main water shut off

For

Newmarket homeowners

Need a hand?

(365) 990-3021

The reason it counts

A burst supply line can let loose a great deal of water in very little time. Closing the main valve stops the flow to the whole house, which turns an emergency into a repair. We are often called to homes where the owner searched for the valve for a long while, sometimes behind boxes or inside a finished wall, while water spread across the floor.

Finding it now, on a quiet afternoon, costs you a few minutes. Finding it during a flood can cost a ceiling, carpet and drywall.

Steps, in order

1. Start where the water enters. In most Newmarket houses with a basement, the municipal line comes through the front foundation wall, beside the water meter. Look along the wall facing the street.
2. Follow the meter. The main valve is normally just before or just after the meter. It may be a round wheel handle or a lever on a ball valve.
3. Check behind access panels. In finished basements the valve may lurk behind a little access door, at the back of a closet or beneath the basement stairs.
4. For slab-on-grade or crawlspace homes, look in a utility room, near the water heater, or where the line rises through the floor.
5. On a private well, the shut-off is near the pressure tank, usually on the line leaving it toward the house. Switching off the pump at its breaker also helps.
6. Test it. Turn the valve closed, then open a tap upstairs to confirm the flow stops. Open the main again slowly.

If the valve will not turn

Older gate valves with wheel handles can seize after years without use. Do not force one with a long wrench; the stem can snap and leave you worse off. A stiff or weeping valve is a good reason to have it replaced with a modern quarter-turn ball valve. The curb stop outside, near the property line, is part of the municipal system and should be operated by the town or a qualified person.

Fixture shut-offs

Toilets, sinks, the dishwasher and the washing machine usually have their own small valves. Learning those lets you isolate one fixture without cutting water to the whole house. The same habit is useful when you prepare a house before travel, covered in our vacation checklist.

Ringing for help

Call us if the main valve is seized, leaking at the stem, or buried where it cannot be reached. We also handle the aftermath when it was not closed in time, from burst pipe repair to basement flood plumbing work. In winter, frozen lines near the entry point are a known trouble spot, and we offer frozen pipe thawing for homes in Mount Albert and across the area.