Terraced block of 5 Victorian cottages mains water

[Dshorrock]

Hi i own an end of terraced cottage the water main comes through the back of my garden into my cottage through the kitchen floor straight up the kitchen wall where one feed comes off it for the water supply to the kitchen and on other feed comes off for the bathroom the mains pipe then continues across the top of the kitchen window and through my deviding wall to next door and supplying the other four cottages in the row. I don't see any easements in the deeds. Is this normal and am I liable if the mains bursts in any on the other cottages it feeds. The mains pipe is iron. Thanks