The possibility of using simulation modeling to predict the quality of wastewater treatment in food production is considered using the example of the baking industry. Using the GPS-X 8.0 software product, the efficiency of wastewater treatment processes at local wastewater treatment plants for the production of bakery products, confectionery products and mixed-type production with the production of bakery products, small baked goods and confectionery production was studied. It is shown that the use of a systematic approach ensures the development of effective local facilities for wastewater treatment.