Hello, My home is on a well. I've lived here for 10 years and haven't had any water issues. Recently I started losing almost all water pressure regardless of location, whenever another tap was opened. The water flow is reduced to a trickle. I talked to the plumber at the plumbing store and he said it was the pressure tank. So I replaced it with a similar size tank. This did not fix the problem. The pressure gauge will show 40 psi and I'm still losing pressure. If no other appliances are used then my flow rate is fine. Pressure is reduced when another appliance is used and immediately returns when the other appliance is turned off.