Bumping and old thread... I've just had valve in a pipe in the ceiling of my basement break, sending a cascade of water into the darkroom! Arrgh... There were several sheets of negatives on the counter that got partially wet, so now I'm going to try to and extract them (at least the ones worth saving), and I'm just so pleased to have found some good information here!! This is going to be a bit tedious, I'd say, but other then being a little soggy, the darkroom seems to have fared ok, with the exception of some ceiling tiles and wet fiberglass insulation. Ugh!!
I have nothing substantive to add... just wanted a little company for my misery!