In the Harrisburg Pa area our water company switched our drinking water disinfection agent from chlorine to chloramine. When they did this they stated that they had to raise the water pressure. Subsequently water mains broke all over the area. In addition, the increased pressure created a lot of noise in the house when someone would shower so I had to install a pressure drop valve to quiet things down. Last, but certainly not least especially in older homes and neighborhoods...chloramine dissolves lead. <<==think about that