Aquatic macrophytes in domestic wastewater treatment is receiving growing attention over last few years. Duckweed-based pond system my be a feasible option for organic matter and nutrient removal, particularly for country, like India where sunshine is available in plenty for photosynthesis.

The treatment and disposal of wastewaters is becoming more and more important as ever increasing population and urbanization threaten existing potable water supplies in many areas of the world. Worldwide natural wetlands are still used for watewater treatment but at present, the use of constructed wetlands is becoming more popular and effective around the world.