The olive mill wastewater (OMW), produced in olive oil production, contains substances that are harmful to the soil. It is ecologically and economically important to convert OMW and olive mill waste (olive pomace), applied together with organic materials such as vermicomposting, into a useful form. In this study; the effects of OMW enriched vermicompost and pomace on the mineral content of onion, garlic and spinach and the possibilities for reducing the negative effects of olive mill wastewater were investigated. The study concluded that vermicompost and pomace added to OMW reduced its negative effects on plants. For example; for onion, the highest copper value (1.54 mg kg^-1) was obtained from OMW-V2 treatment and the highest sodium value (280.06 mg kg^-1) was obtained from OMW-V1 treatments. In cv. ‘Matador’ received the highest nitrogen value (2.72%) from OMW2 treatment; the highest values of phosphorus (245.51 g 100g^-1), sodium (39.69 mg kg^-1), and iron (51.52 mg kg^-1) were obtained from the P1 treatment; the highest potassium (1592.22 mg kg^-1) and copper (1.98 mg kg^-1) value were obtained from OMW-P2 treatment. Two-way hierarchical cluster analysis (HCA) revealed that a high degree of similarity based on mineral content was observed between treatments; OMW-V3 and V1, V1 and OMW-P1 and OMW-V3 and OMW-V4 in Uzunbacak local spring onion variety, Kırmızıbacak local garlic variety and cv. ‘Matador’, respectively. The results are valuable in revealing the possibilities of economical utilization use of pomace and olive mill wastewater.