Walter was born in 2216. He spends his days minding the machines and fixing drainage devices that break. He's increasingly worried about the state of the water and drainage structure, and knows it won't hold much longer - and neither will he. At 61, he's one of the oldest residents.
During the day Walter can be found in the water processing plant almost all day, and sometimes he will step outside for some air. And during the night hours, he can be seen drinking in Moriarty's Saloon.
pcps3xbox360 When in the Water processing plant you can "drink" from Walter. The action to drink will show for a split second before switching to the normal talk option, timed right you can drink from him and gain HP and a few rads. Note that the text is red and doing so is considered a crime. [verified]