Constructed wetlands are being used in rural areas to treat wastewater more efficiently and cost-effectively. Different types of plants and fillers are being used in these wetlands to improve their performance. By combining different processes, such as multi-stage and single-stage wetlands, the treatment of rural wastewater can be more effective. The investment and operating costs of these wetlands are being analyzed to make them more accessible for rural communities. In the future, the focus will be on further improving this technology for better rural wastewater treatment.