Locating and Operating Your Main Water Shut-Off Valve

Knowing where to turn off your home’s main water supply is as important as knowing where to switch off or reset an electric breaker or replace a fuse. 

All homes are expected to have a main water shut-off valve installed inside the home while it was constructed. So for the period of emergencies or repairs, locking the appropriate inside valve will be our focus of this article. 

There are likewise underground stopped valves introduced at the property line; if stopping this valve is important, it would be ideal if you approach an enrolled ace plumber or WSSC Water to work on the valve. 


It is of the essenceto understand the different plumbing arrangementsin your home and where they are located especially the main supply valve. 

  1. Some homes have the water meter inside the house, while in others, it is located outside, usually underground within a “pit” near the property line or right-of-way. Some homes also have submeters, that is usually inside even though the main meter is outside or underground. 
  2. Newly constructed homes usually have fire sprinkler systems when compared with older ones that usually do not have it.
  3. Home constructions have lots of differences; basements, crawl-spaces, and slab-on-grade.
  4. Water turn-off valves are usually in the shape of a round “wheel” or level handles that can be turned clockwise or anti-clockwise 

Locating the proper valve. 

  1. Basement or Cellars – The shut-off valve is normally situated close to the front foundation wall. The fundamental water may have gotten through the concrete floor or through the wall. The valve is regularly inside 3-5 feet of where the main water enters. At times, the main water may enter an alternate zone, similar to a mechanical room, up through the floor, close to the water warmer or heater.
  2. Creep space in addition to a cellar – the shut-off valve might be the place the water enters the basement or in some more seasoned homes, the shut-off might be inside the slither space. On the off chance that the last is valid, you might need to consider an optional valve situated in the basement.
  3. Crawl-space with no basement – the shut off valve will commonly be situated close to the water heater or under the kitchen sink, yet anyplace is conceivable. Likewise, with “B” above, it might be inside the creep space; in which case, you might need to consider an optional valve situated up in the living space (close to the water heater or under a sink).
  4. Slab-on-grade construction – the shut-off valve will commonly be situated close to the water heater or under the kitchen sink, however anyplace is conceivable.

Choosing the proper valve to operate

In the event that yourhome has a fire sprinkler framework, care is required while choosing a shut-off valve. Except if it is a sprinkler pipe that isspilling, you should just stop the home’s pipes supply and leave the sprinkler channeling charged/live. 

On the off chance that the water shut-down is for a wrecked sprinkler line or sprinkler head then find the first valve (nearest to the primary water line section point) and work that valve as portrayed beneath. 

For all other general pipes shut-offs, crisis and non-crisis: 

  1. For homes with fire sprinklers and an inside primary water meter, find and work the second valve, it will be over the main meter and past (downstream) of the fire sprinkler framework “tee”. In the event that you have a sub-meter, its second valve will just segregate the water system and additionally hose Bibbs. 
  2. For homes with fire sprinklers and an outside main water meter, find and work the second valve, it will be passed (downstream) of the fire sprinkler “tee”. 
  3. For homes without fire sprinklers and with an inside fundamental water meter, either valve will close off flexibly to the home, however working the second valve is a decent practice and a shield on the off chance that you are uncertain of whether your home has fire sprinklers or not. 
  4. For homes without fire sprinklers and with an outside principle water meter, you will probably just have one closed off valve that will close down the whole home.

Closing the main valve (Shut-off/Turn-off)

  1. Round “wheel” handle valves will shut-off by turning the handle to one side (clockwise). It might take at least 2 full upsets. 
  2. Slowly turn level handle valves ¼ turn, until the handle isn’t corresponding with the funnel. It should stop at a ¼ turn. 
  3. Open a tub or sink spigot (hot and cold), on the most significant level to diminish pressure and watch that spout to guarantee a full shut-down. At that point keep on opening spigots all through the home to deplete down as required. 
  4. If depleting down-home, make certain to de-energize the water heater and boiler where relevant by stopping capacity to electric water heaters and any sort of boiler. For gas water heaters, turn indoor regulator down to the pilot possibly setting; on the off chance that you channel the heater, shut off the gas.

Opening the main valve (Open/Turn-on)

  1. Close all fixtures with the exception of a tub or sink on the highest floor. 
  2. Halfway turn-on valves gradually; extra delayed for switch handle; stop after ½ upheaval on wheel handle, ½ of a ¼ turn for switch handle; with water streaming, gradually turn-off most elevated open fixture. 
  3. Tune in for water strain to balance (commotion ends); completely open primary valve. Drain air from lines by gradually opening (hot and cold) on all spigots, each in turn, until air quits streaming, at that point close every fixture; move to all others until complete. 
  4. Just turn the power on to electric water heater and boilers after the water framework is full and the sum total of what air has been seeped out. On the off chance that gas was killed, cautiously following re-beginning heading on the machine coat or call an enlisted handyman or your gas company for maintenance.