I recently soloed the waterworks on my level 65 life. It wasn't too hard, and it only took about 2 hours. Soloing it on a life isn't as hard as it looks! And yes, I had only 10 mana left due to my want to use BOTH the cosmic kris and stellar signet.
I used the auerate band and lexicon blade for the mobs and luska and the cosmic and stellar for sylster (ended up that I should have done it other way around except for luska)
Here is picture proof (it isn't the best, I could have took a picture at luska, but he was a real pain giving me tons of trash x.x)
(Yes, I did have to crop it)