The kitchen faucet is a single-handle model that raises and lowers to control water flow and side to side to regulate hot and cold. Last week a pea-green colored water began a slow ooz from somewhere inside the faucet. The tap water is clean and clean. I disassembled the faucet as much as possible and saw more of the pea-green water oozing up, but could not locate the source. This situation has me baffled. The faucet was installed by a plumber a couple of years ago, and this is the first problem we've had with it. I'd like to resolve the problem myself if possible. Any advice or suggestion as to what is causing this problem will be appreciated. Thank you.