There is a potable water supply at the dump station.

Hi John, A representative from South Dakota Game, Fish and Parks wrote me a note to answer your question - here's what they said. "The sites at Farm Island Recreation Area campground are electric only."

I think we only had electric at our site and had to go to a hydrant to get water.

Hey John - I was here about a year ago. I just posted my photos which show only electric at the sites (see prior Q&A for more detail). Great place, enjoy!