Where are the leaking pipes in megaton?

Answer 1

One is near the entrance to the city on the pipe. There is another one overlooking the ledge from the pub looking down at the general store. The last one should be in the corner opposite diagonally from the entrance to the city.

Answer 2

The three leaks that can be found in Megaton (a quest initiated by Walter) are as follows;

• On top of the Children of Atom. Reached easily by jumping down from the right corner of the fence by Craterside Supply.
• On the hill where you enter. Right by the staircase to get to your Megaton house.
• On the hill opposite of where you enter Megaton that leads to the Common House.

You need a repair skill of at least 30 to fix all the pipes.