how many shut off water valves should a house have?
February 20th, 2010 | 
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ideally one on each faucet and one on the main main one on the toilet
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Posted in Water Valves
ideally one on each faucet and one on the main main one on the toilet
Posted in Water Valves
1
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You can possible hace 1 on your fridge, 1 on any faucet outside, 1 on each toilet, & 2 on the washer hoses
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Marcone Supply
http://www.marcone.com
You should have I before the meter or well tank, one at the water heater inlet and one each for the cold and or hot water at or near each fixture or faucet.
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1 main one for whole house supply. A shut off for each faucet & appliance that uses water.
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I have always had just 1 main one in each house I have had.
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ideally one on each faucet and one on the main main one on the toilet
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If you mean the main water valves on the pipe coming in from the city (assuming you dont have a well), you should have one right before and after the water meter. You should also have smaller shut-off valves on every plumbing fixture in your house and the outside hose bibs.
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If you mean the water main, there is a main valve at the house and one that is part of the water meter itself. You may have also one on the supply side of the water meter.
If you mean cutoff valves in general, everything that uses water in your house should have a cutoff valve supplying it. That includes the hot and cold water supplies to each faucet and your washing machine, a water cutoff to each toilet, the dishwasher, your water heater, ice maker in the fridge, etc. Hose bibs don’t generally have cutoff valves before them, because they are pretty much considered a cutoff valve (they supply water to the hose).
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you should have a main for the whole house and one valve for each fixture one hot and one cold,for sinks, one for your hot water heater,one for your boiler if you have one,
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Some hits some misses.
Must have one have one from water main. (water co) before the meter.
One .inside the home (service entrance) for the whole house.
After that it depends on the number of hot & cold water supplies you have .
Eg. sink, washer 2.. hot & cold
Toilet .1
Basically a means to shut off water at each point of use.
Nothing says you cannot have additional "zone" shutoffs.
Aside from the first 2 just add them up.
Best regards
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