Constructed wetlands is a term used to describe engineered ecosystems created to mimic the natural wetland environment. These ecosystems are important for removing pollutants and nutrients from wastewater, and can improve water quality and biodiversity. Synonyms for constructed wetlands include artificial wetlands, engineered wetlands, treatment wetlands, wastewater treatment wetlands, and natural systems for wastewater treatment. These systems have been employed worldwide for their low cost, low energy usage, and minimal maintenance requirements. Constructed wetlands have proven to be both an ecological and economical solution for wastewater treatment, providing a natural and sustainable approach to water management.