The Water-works is a site of importance to the dwarves who wish to remain in Moria. One such dwarf, Foreman Indrith, has made it a mission to repair the channel there.
'Now that we have the findings, we can send them on to someone who will know what we should do.
'Make your way east to the Great Wheel and speak with Foreman Indrith. He will be able to tell you if there is anything wrong with the water and how we can best deal with the situation.
'I am afraid something terrible is going on here.'
Foreman Indrith is at the Great Wheel to the east of the Vile Maw.
Kaldi handed the sample back to you and sent you to speak with Indrith about what is wrong with the water and to find out what should be done at the Vile Maw.
Kaldi is at his camp outside the Vile Maw, west of the Great Wheel.
Foreman Indrith did not like what he saw within the water and sent you back to Kaldi with a special message.