Space Station Utilities

When you think about paying your utility bill, that generally means paying for the electricity you used, the water pumped into your house, the sewage system, and trash removal . How do those work on your station? I discussed electricity ideas earlier in the engineering post but what about the other utilities?
In the many Star Trek series they had a replicator system that turned the trash and sewage back into usable items by breaking the trash and sewage down into atoms and storing the atoms until they were reformed into clean items requested at a replicator. With the major push for recycling going on in the world now, such an invention could happen. Somehow every form of waste could be recycled into usable products on your station or you could set up your station to automatically separate the recyclables from the burnables and sewage. While the recyclables are recycled or sent elsewhere to be reused, the burnables are burned or melted down, the bad smoke purified and the ashes kept with the sewage to be sent by cargo ship somewhere else.
As for the water on ship, that would likely need to get purified and reused or created somehow. A simple way to do that would be to turn the dirty water into steam, purify the steam, and turn it back into usable water, maybe add some vitamins to the drinking water system.
Another set of systems that fit under the term “utilities” on a space ship is what I referred to as the communications department on a ship. The department is in charge of making sure everyone has every ability possible to talk to anyone off station and anyone on station and you probably want to think of at least a basic explanation of how before continuing to create your station. Do your people communicate by video over the network, by a communication device on them somewhere(Star Trek phone like device that as well as a button on their breast that caught their voice and transmitted it wirelessly while Babylon 5 had a similar device on the back of their hands for station personnel), by a halogram of some sort, or by another method.
No matter how you decide your utilities work on your station, figure out how the people on station would get help if something breaks. No matter where you are or what century your story is set in, things can always break. You may be in a state-of-the-art station newly built and tested to perfection, but there are always unexpected glitches in the system, whether too much hair or trash in the pipes backs up the sewage system every once in a while or a virus has the replicators only creating discolored food or one type of food. Such glitches would seem disasterous to civilians and a help desk should be manned all day, everyday to calm them down until the problem can be dealt with.