Recently the pressure in both the hot and cold faucets on one bathroom sink dropped to almost nothing. We replaced the very old faucet with a new one but it did no good. We still have just the tiniest trickle out of both hot and cold. The tub and toilet in the same room are not affected. The supply lines are older copper. Any suggestions?

At the time you replaced the faucet did you flush out the supply lines? Did you remove the aerator to make sure the screens were clear? Regards, Tom