WHY ARE THERE GRAVEL OR SAND PARTICLES IN MY WATER?

Commonly, it is the lining of the old galvanized pipe that is breaking loose or rotting from the inside out. Chunks of rust, iron & other minerals found in the pipe material and water then flow out of your faucet. This is a serious problem that can lead to pinhole leaks. The only remedy is a re-pipe of your potable water system.