Saddle Rash (2002)

S1E14 Water, Water Everywhere

In a cruel twist of fate, the Castaways find themselves facing a dire shortage of fresh drinking water despite being surrounded by the ocean. They gather their limited supply and realize they can only afford a few drops each day. Naturally, many of the castaways take advantage of Gilligan's watchful eye, sneaking sips from the communal stash until the Skipper catches them in the act. Just when it seems like all hope is gone, Gilligan steps up and comes up with a solution that turns things around for everyone!