On Tuesday, October 20, 2015 at 6:04:16 PM UTC-4, wrote:
If both hot and cold have low pressure, then there is a restriction between the line coming in from the water meter and where the hot water line to the heater branches off. Or, there is a restriction in the faucet itself.

I'm going with faucet because the rest of the house is OK. I heard a click from the faucet when it goes light. Everything including icemaker is fine. Same line.
Whole house is same line.