The textile industry holds a vital position in fulfilling the daily needs of people worldwide. With the rapid expansion of this sector in developing nations, there has been a significant rise in freshwater consumption and production of textile effluent. In countries like India, nearly 60% of this wastewater is reused, demonstrating a considerable scope for enhancing water reuse rates. However, conventional treatment techniques often fail to effectively eliminate pollutants from textile effluents. This challenge has led to the emergence of innovative methods like sono-electrocoagulation (SEC), which combines the processes of electrocoagulation (EC) and sonication to enhance the removal of dye from wastewater. In this approach, copper electrodes serve as both the anode and cathode, while the system operates with a contact time of 30 min. This research has shown that optimal conditions for SEC involve a current density, electrolysis time, and ultrasound power of 66 mA/cm2, 25 min, and 100 W, respectively. Under these parameters, SEC successfully achieves a 95% removal efficiency of deep indigo dye from aqueous solutions. This innovative technique offers a more effective and sustainable solution for treating dye-contaminated wastewater. By adopting SEC technology, the textile industry can significantly reduce environmental pollution and improve water management practices, ultimately contributing to sustainable development.