Drinking water treatment and waste management have alarming dimensions in rural DR Congo, particularly in the Bengamisa region, and are currently experiencing continuous and permanent degradation. Also, there is a disparity between cities and within cities and this is expressed in terms of quality and quantity of drinking water between well-equipped areas (regular areas) and poorly equipped areas (irregular areas). However, water scarcity is characterized here by the abundance of dirty water whose use is a hindrance to the economic and social emergence of the population. The criteria for water scarcity in the Bengamisa region are lack of or poor access to drinking water, the preponderance of water-related diseases and above all the "doubt" that consumers have about the quality of water. of this resource. In general, the objective of this study is to evaluate the impact of plastic bottles in the treatment of drinking water by solar radiation, but also on human health. To achieve the objectives, we treated the drinking water by SODIS method, which consists in exposing under water the water contained in the PET plastic bottle for its purification. Thus, the following physicochemical parameters were the subject of our analyzes: pH, M.O, color, turbidity, nitrate, nitrite, total iron and temperature; and this before and after photo-purification of water. Indeed, it is clear from our investigations that the photo-purification of water does not change the physicochemical parameters of the drinking water so much. Similarly, it should be noted that not all plastics are innocuous and we must be wary of buying not only bottled water but also other products / foods packaged with plastic. But, it is rather important to know what kind of plastic you have to do; and that all codes, in general, are mentioned on the bottom of bottles, containers, corks, etc. To do this, the plastic bottle based on polyethylene terephtalate (PET) is more recommended than the others, because of its performance in solar recipe. It should also be remembered that consuming bottled water harms the wallet, the environment, and "could" harm health.