You can run your own small water lines by using the plastic plumbing tubing sold by the foot at Home Depot or Lowes, the use of a slightly larger drain line of the same material and some of the many varieties of fittings made specifically for these lines/projects. A lot of this stuff is IDed by color code so you know what fits what as you browse. Have one of the experienced sales people help you and dry-fit/assemble the parts as you go so everything goes together properly and you have everything you need in one go..
By-the-way, IMO it's better to run one long line instead of buying 25 foot runs of line and joining them for a long run. My hot and cold line are two pairs of 25' lines with a brass fitting that joins them together and though I haven't had any trouble I'd just as soon have one long line each.
If you have copper water lines, you can simply use a self-tapping saddle valve on a cold water line and a hot water line, if you can monitor it for leaks.
Hot water lines are not recommended for these, but in a safe location that can be checked, it should be ok.
Run the waste-water line to your washing machine drain pipe and you're good to go.
If there is a bathroom nearby, fitting exist to allow you to take your water from the sink feeds and run a waste-line into the sink drain, beneath the basin.
You can also do as I have and make your washer water feed pipes your water source by building a 'tee' that reduces one off take to a small enough water line and the other feeding your washer.
This is more expensive than the self-tapping valves but works without piecing a pipe. I think I paid about $100 for everything, including the combination of fittings that reduce the sink waste-line to a 3/8 inch line. Until I ran the lines I used a 5-7 gallon water bottle and vinyl tubing to collect waste-water from the sink and emptied that as needed.
I don't need a lot of running water in my darkroom so the small lines work well for me. I recycle distilled water jugs by marking them 'tap water' and keeping them on the same shelves where I keep distilled water for mixing chemicals. This way, my film wash water is the same temperature as my chemistry, I use the Ilford Method so figure a gallon or so for each tank of film. Paper washing only requires a low flow and the small lines are good enough for this. Same for cleaning up.
I used small bule and white "John Guest" press-fit/pull-release petcock valves for controlling the incoming water at the sink, no faucets yet, and they seem to be ok. Latter on I'll look for something more 'durable'. I also used a cutoff valve under the sink drain so I could control that out flow.
Even if you only run the drain line, it's worth the bother of putting a few very small holes through the walls, floor or what have you. Getting rid of waste water is the biggest thing, IMO, so if nothing else
I hope this helps
