From pulsed-neutron measurements, the most probable slowing down times of 14.1-MeV neutrons to 1.1 and 0.8 eV in water are found to be 1.55 ± 0.15 and 1.85 ± 0.15 µsec, using cadmium-shielded 6LiI scintillators at distances 10 to 50 cm from the source. No spatial dependence can be found. Subsequent Monte Carlo study of 120 000 neutron cases not only confirms the experimental results, but also yields a more detailed space-energy-time neutron distribution as well as average slowing down times to various epithermal energies.