Drip pools and trickles of percolation water in 17 caves in West Virginia were sampled for epikarstic species. A total of 20 genera of copepods were found. 11 different genera of harpacticoids and 9 of cyclopoids were recognized in the samples collected from pools. For understanding of the structure and physico-chemistry of epikarst, the focus was specially on trickles rather than pools. Three sampling sites of the Organ cave system were chosen: the Lipps, Sively 2 and Sively 3 streams. All together in drips 13 genera of copepods, from which 8 of harpacticoids and 5 of cyclopoids have been found. Nearby drips have more similar fauna composition than distant drips. The epikarstic fauna will add significantly to the overall species richness found in Appalachian caves, and likely elsewhere in the U.S. as well.