Mosquito larvae in water from kitchen tap

Over the past few days my wife showed me mosquito larvae in the water from the kitchen tap a couple of times. We have long stopped using this water for drinking purposes, but just wanted to throw a note of caution out here.

How could this be? Any pictures??? Have you called SJ Water? I had an unprecedented, horrible summer of mosquitoes in my house, asked numerous experts on possible modes of entry like faucets, drains, vents, fireplace, etc. Got a no on all those. I even had the city out here to investigate. No one could figure it out. I was told it takes standing, untreated water for them to grow in. Bizarre!