This interaction is symmetrical to the beta decay of the free neutron. Therefore it is sometimes referred to as inverse beta decay. All detection methods require the neutrinos to carry minimum threshold energy of 1.8 MeV. Only antineutrinos with an energy above the threshold of 1.8 MeV can cause interactions with the protons in the water, producing positrons and neutrons.
Reference: Griffiths, David, Introduction to Elementary Particles, Wiley, 1987.