The Runge-Kutta method has been used to solve three coupled differential equations to determine the performance of an active triple basin solar distillation system. Hourly variation of various temperatures and yield have been evaluated along with overall thermal efficiency. Optimization of various parameters namely collector and basin area, and water depth with respect to daily yield has been carried out. Numerical computations have been performed for a typical day of Delhi climate. On the basis of numerical results, it has been observed that optimization of the collector area reduces with number of effects.