Whenever we flush or turn on the two outdoor faucets, the sound of rushing water in the pipes is unbearable. If we open any other faucet in the house the sound of rushing water is normal, but flush any of our three toilets or outdoor faucets and the sound will wake you from your sleep. What could this be. I doubt the problem lies with the toilet because it occurs in all three. It is to the point that we hesitate to flush at night in fear of waking up the entire house. I believe I have one of those restrictor valves in the hallway closet. Could that need adjustment?