Wastewater has a toxic effect on crop yields. Efficacy may vary depending on wastewater composition and plant sensitivities. The present study aimed to investigate the quality of wastewater from the sugar and textile industries as well as their toxic effects on Garlic (Allium sativum L.). In this study, the morphological and biochemical effects on Allium cepa were evaluated with three replicates. Twenty-four pots filled with soil. Three concentrations of each wastewater as well as a control concentration were selected to study the toxicity of wastewater from the sugar and textile industries. Choice of concentration of sugar and industrial wastewater: 80% (A1), 90% (A2) and 100% (A3) and for the textile industry it is 80% (B1), 90% (B2) and 100% (B3). Different physicochemical properties of the two wastewaters were observed in which heavy metal concentrations were found more in textile wastewater. Morphological reductions in plant height, root and shoot length as well as fresh and dry weight of roots and shoots were observed in the wastewater treated samples. The morphological results are supported by genotoxicity studies. Biochemical results showed obvious results. A decrease in protein and chlorophyll and an increase in ascorbate peroxidase, proline and catalase were observed with increasing wastewater concentration. Overall, the spread of sugary wastewater and wastewater from the textile industry was found to have a negative impact on plant growth. However, the toxicity in textile wastewater is greater than in sugar industry wastewater. Textile wastewater is enriched with heavy metals compared to wastewater from the sugar industry.