Close the faucet a bit.

[mampwamp]

Close the faucet a bit.
The tap was running water, how to ask someone to close it a little bit to make water running become smaller.

 

[konungursvia]

Here we would ask someone to turn the water down a little bit.

 

[mampwamp]

In contrary, how to ask someone turn the water become bigger?

 

[Barb_D]

Say you want to "increase the water flow" or "decrease the water flow" not make it "smaller" or "bigger."

I need more water. We need more water to be flowing. Open up the tap more.

 

[Matthew Wai]

Is it correct to say "turn up/down the tap"?

 

[Barb_D]

Usually I say "Dear God - you are wasting water all over the place!" or something like that and they get the message and decrease the flow.