My home was built in 2004. The last few weeks I've had problems with the water pressure, which I've never had in all the previous years. Recently I can no longer use both showers at the same time. The washer and dish washer can't be run at the same time or two sink faucets, or any combination of these. The water pressure drops off to 1/4 to almost nothing. Run the washer or dish washer and try to take a shower and the pressure drops to a bit above a trickle. There is a water valve in the parkway in front of my house that was sinking, and I thought that may have been the problem. I contacted the village, they came out tested it for leaks, found nothing wrong and brought it back up to grade. There went my guess that it was the problem, as my water pressure is still the same. Nothing has been done to any of the plumbing in the house with the exception of having a new hot water heater professionally installed. What could possibly be causing this loss of water pressure. Oh and checking the "Social Media" for the Homeowner's Association shows no one else complaining/commenting on this problem in their homes.