Fix the Necropolis water pump

Fix the Necropolis water pump is a side quest in Fallout.

Detailed walkthrough
After talking to the underground ghouls of Necropolis, travel to the watershed area and then enter the Necropolis sewers that are being guarded by Larry. In the eastern end of this section of the sewers lies a pile of junk. It is essential to the completion of the quest. Alternatively, junk can be more easily acquired from the Hub, found in a crate in the south-east corner of the weapons supply shop of Jacob in the Hub's Old Town.

The Vault Dweller then needs to approach the water pump and use the junk to fix the pump (move the junk into the empty slot and use it on the water pump). A successful Repair skill check will fix the pump. A critical failure will remove the junk from the Vault Dweller's inventory and deal 1 point of damage to them.

Rewards

 * 1000 XP for repairing the pump if super mutants attacked Necropolis, 2500 XP if the super mutants did not attack Necropolis.