Water treatment has been extensively studied; however, only a few studies have considered it in isolated sites that do not have electric supply, which is a major inconvenience for inhabitants of rural areas. In this paper, the aim was to develop and implement a photovoltaic generator (PVG) that powers a pumping system, and water treatment with ozone. First, the PVG panel’s orientation was optimized using response surface modelling to identify the optimum operating orientation angles. Then, this configuration was
applied to supply a water treatment system to bleach dye-contaminated water and disinfect well water. The experimental results are presented and discussed to show that our system can be used to treat well water in isolated sites.