does low city H2o pressure turn on tub faucets?

[apreyes]

Our city (10,000 population) has turned down the pressure of the water due to the drought in TX. Last week, we turned on the sprinklers and the water on our tub faucet turned on even though we had it turned off. Could it be related to the low city H2o pressure? Our H2o pressure seems have been turned down even lower and now we cannot get our tub faucet to turn off. Any ideas??

[Redwood]

Do you know the brand & model?

[apreyes]

image of faucet

Here's an attachment of a picture that I took. Does this help?

[Redwood]

Here's an attachment of a picture that I took. Does this help?

That is a Moen mixing valve. There is no reason why low pressure would make it leak it is coincidental that the valve started leaking and it needs a new cartridge.

Do you turn the knob to turn it on and adjust the temperature?

or,

Do you pull out the knob to turn it on and turn the knob to adjust the temperature?

[apreyes]

We pull it and then turn it. Our pressure is higher this morning and there is no streaming of H20 leaking from the faucet.

[Redwood]

Dodged the bullet for now but the cartridge is probably quite worn and it will come back...

You either have a Moentrol valve...
Click here for the parts diagram...

or,

An older Legend model that is not pressure balanced. The only difference is the non-pressure balanced one does not have the section on the right side that has the 1423 balancing spool.

Both valves use the same basic cartridge with is either a #1200 or, 1225, and a special cartridge removal tool will be needed. Some times the one Moen provides with the new cartridge will work but I wouldn't count on it...

If you are the original owner of the faucet Moen has a lifetime guarantee and they will send you free parts if you call 1-800-BUY-MOEN.

The instructions at this link may prove helpful to you.