In the future neutrino experiments, a beta-beam, which can produce pure electron neutrino beam, is expected to achive precise measurement of the neutrino oscillation parameters. In the ν µ appearance measurement of a beta-beam, a detector does not need to identify particle charge and thus, a water Cherecov detector will be a candidate for the far detector. In this paper, we study the expected signal detection efficiencies and background at the proposed beta beam facilities with the water

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... ov detector. In the estimation, we use the current simulation and analysis tools developed for the Super-Kamiokande experiment. Depending on the beta beam setups, the signal detection efficiencies are found to vary from 36.4% to 75.3% in the standard ν µ search. The major source of background was found to be neutral current pion production, and the fraction of the background increases with the mean energy of the neutrino beam.