My water pressure is low in my shower and in the kitchen sink. But the pressure is just fine in the basement n in the bathroom sink. I did the steps to checking my supply line n noticed there is a sound of water in the supply line after I told a local plumber this and he informed me that maybe the sound of just noise carrying thru out the house if my main was broken it would have taken out the entire house. He said I may just need to get my pipes inside checked. What could this be causing the low water pressure in my shower and kitchen? And my water has showed no differents. Also today I turned off the main for 5mins and turned it on rust shot out the bathroom faucet along with brown water.