I have two sinks in my bathroom, and one of them just lost water pressure. Why are both faucets low flow?

Question

Could it be the air vent on the roof is clogged? The rest of the bathroom is not affected. There is no sign of leakage - it just happened all at once. Anyone with plumbing experience have a clue?

Screens are cleaned, shut offs are full open.

Answer 1

Air vent has more to do with drainage.

I agree with above, clean out the screens on both faucets. Remember, your house gets only so much water entering it at one time, so if others faucets are also running including a sprinkler system, your water flow will be low. (by the way the pressure is the same, just the flow is low, but that's getting hydrologically picky).

If these faucets are brand new, remember since the Kyoto Accord, government mandates all plumbing fixtures are now low flow, it's built right into them.

Final thought, the clog may be more internal than the screen. Sometimes you have to disassemble the faucet and look for debris.

Answer 2

You need to take off the screen and clean the dirt out of it. It's right where the water comes out. Run the water for a few seconds to get any other dirt out of the pipes.

If that doesn't work, look for the shut off valve under the sink, could be some one bumped it. If both the hot and cold water pressure is low, you probably have dirt in the screen

Answer 3

That happens when I wash dishes, and turn on the hose.