I have a relatively new home (4 years old). My water pressure is low, especially when 2 or more faucets are running. I suspect the low pressure is due to a water treatment system installed to remove heavy concentrations of iron in my well water. I measured the pressure before and after the water treatment system while the water was running and noticed that the pressure drop across the system was varied between 9 and 12 psig. How can I best boost my water pressure without bypassing my water treatment system?