Constructed wetlands (CWs) are a well-established, eco-friendly wastewater treatment technology that offers a sustainable alternative to conventional, energy-intensive methods. CWs contribute to water security, enable energy recovery, deliver various environmental services, and are effective in treating a wide range of environmental contaminants. Recent advancements in CWs research have led to the integration of bioelectrochemical systems (CW-BESs) for enhancing the treatment efficiency coupled with simultaneous electricity production. However, incorporating Life Cycle Assessment (LCA) into CW-BES development is critical for ensuring the sustainability of these systems by identifying and quantifying their environmental impact. Therefore, this chapter discusses CW-BES technology, focusing on LCA methodologies to evaluate performance and environmental sustainability throughout the system’s lifespan. It also examines economic analyses and potential social impacts in conjunction with LCA findings. Additionally, the chapter highlights the benefits and drawbacks of integrated systems, related policy implications, and recommendations for future development.