You have obviously thought about this yourself but I always recommend that people try to do their own plumbing. When they seem hesitant, I ask "what is the worst thing that can happen?". My answer is that you might get wet.
Steve:
I totally agree with you, but:
Twelve years ago, when I built my darkroom, I installed one of those cartridge water filters under the sink. I also had two water shutoffs, (one inside, one outside) because I just wasn’t all that convinced I was that good of a plumber. I would leave the water off unless I was actually working in the darkroom. For about 9 years, I didn’t do that much.
For the last 3 years, though, I’ve been in a bit of a photo rebirth, and been in the room a lot more. I had even gotten brave enough to leave the water on all the time, and without incident.
What I had not ever done, in 12 years, was change out the cartridge in the filter! I had tried once, and the housing was screwed on so tight, it didn’t wish to be removed, so I had left “well enough” alone. However, in recent months, I had noticed that the water had an odor when I first turned on a faucet, but just long enough for the pipes to flush out, and then it was fine. Ah hah! It’s that filter I reasoned.
Well I was right, and this past weekend I managed to get the filter housing open and replaced the all but disintegrated yet stinking cartridge. No more smell, and everything looked good. I spent Saturday developing film, and Sunday evening printing.
When I got home from work on Monday, I went out to the darkroom to look at the dry prints. The darkroom was silent, of course (no stereo, fans or wash water) except for a “drip-drip-drip-drip …”
Oh S***!!!
I reached under the sink to the shelf under the filter, and sure enough, it’s wet. Doesn’t seem too bad though. I immediately shut the water off (that’s the easy part …). So, I pull the stuff off of the shelf right around the filter. Not too bad. Then I look at the floor. OH S***!!! It’s standing water the entire length of the 8' sink underneath. The sheet vinyl is soaked and all crinkled up and all of the boxes and things on the floor under the sink (“long-term storage”) have wicked up all this water.
As it turned out, all I lost is the sheet vinyl and a few cardboard boxes. One box had plastic trays and they’re not hurt, for instance, but the box is toast. (Wet, soggy toast.)
Time to remodel. I’ve been thinking about making some configuration changes, maybe add a cabinet on the dry side, maybe get a bigger “dorm” refrigerator for film, move some faucets, re-do some electrical, etc. But, that was all too much trouble. Now that I've spent the last two evenings taking everything out of the darkroom, it is time. I won’t do all of the possible changes, but I’m going to give it some thought and do a few things. If only I could make the room bigger. If nothing else, the room will get a good cleaning!
(and the filter will NOT be re-installed)