  The Tokai to Kamioka (T2K) experiment is a 295-km long-baseline neutrino
experiment aimed towards the measurement of neutrino oscillation parameters
${\theta}_{13}$ and ${\theta}_{23}$. Precise measurement of these parameters
requires accurate knowledge of neutrino cross sections. We present a
flux-averaged double differential measurement of the charged-current cross
section on water with zero pions in the final state using the T2K off-axis near
detector, ND280. A selection of $\nu_\mu$ charged- current events occurring in
the Pi-Zero subdetector (P{\O}D) of ND280 is performed with $5.8 \times
10^{20}$ protons on target. The charged, outgoing tracks are required to enter
and be identified by the ND280 Tracker. The cross section is determined using
an unfolding technique. By separating the dataset into time periods when the
P{\O}D water layers are filled with water and when they are empty, a
subtraction method provides a distribution of $\nu_\mu$ interactions on water
only. Systematic uncertainties on the neutrino flux, interaction model, and
detector simulation are propagated numerically within the unfolding framework.
