Yesterday, our kitchen faucet suddenly stopped working. Water pressure has always been fine, but now there is only a trickle. It's a single handle faucet and both the hot and cold will not work. I have a reverse osmosis water filter next to it that still works fine, and I know the shutoff valves are open. I cleaned the aerator and even took off the sprayer, and still very little water comes out from the hose, so I don't think it's a clogged sprayer.