I came home today, ready to get a glass of water, and the water pressure at my kitchen faucet is very low. I know it's not a water company problem because the water pressure in the shower and the bathrooms are just fine. I turned the valves under the sink on and off, and still the same, low, water pressure. Can anyone advise me on a fix or figure out the problem from my discription? Called my plumber, but he's a week out... Would love to DIM before he comes. Thanks