For estimates based on water usage, see Wood, “To Dip or Sprinkle?” p. 58. For estimates based on the size of the assembly hall, see Magen Broshi, “The Archaeology of Qumran—a Reconsideration,” in The Dead Sea Scrolls: Forty Years of Research, ed. Devorah Dimant and Uriel Rappaport (Leiden: Brill, 1992), pp. 113–114.