Constructed wetlands (CWs) are natural systems used to treat wastewater for reuse, offering sustainable and cost-effective solutions. This review summarizes recent studies (2018–2023) on CWs for treating gray water, runoff, domestic, and industrial effluents, focusing on their efficiency in removing pollutants and meeting reuse regulations. CWs can treat gray water, runoff, and various industrial effluents, achieving high removal rates for organic matter, nutrients, and pathogens. However, challenges remain in efficiently removing emerging contaminants and pathogens, especially in hot climates where evapotranspiration increases salinity. Hybrid CW configurations, combining aerobic, anoxic, and anaerobic zones, enhance treatment efficiency. CWs are also effective in removing heavy metals and other contaminants, with some studies showing high removal rates for pathogens when combined with disinfection methods like UV or chlorination. Despite their benefits, CWs require careful design to meet reuse standards, particularly for agricultural and irrigation purposes. The review highlights the importance of integrating CWs with advanced technologies to improve effluent quality and ensure compliance with regulations. Overall, CWs are a promising technology for water reuse, especially in regions facing water scarcity and climate change impacts.Constructed wetlands (CWs) are natural systems used to treat wastewater for reuse, offering sustainable and cost-effective solutions. This review summarizes recent studies (2018–2023) on CWs for treating gray water, runoff, domestic, and industrial effluents, focusing on their efficiency in removing pollutants and meeting reuse regulations. CWs can treat gray water, runoff, and various industrial effluents, achieving high removal rates for organic matter, nutrients, and pathogens. However, challenges remain in efficiently removing emerging contaminants and pathogens, especially in hot climates where evapotranspiration increases salinity. Hybrid CW configurations, combining aerobic, anoxic, and anaerobic zones, enhance treatment efficiency. CWs are also effective in removing heavy metals and other contaminants, with some studies showing high removal rates for pathogens when combined with disinfection methods like UV or chlorination. Despite their benefits, CWs require careful design to meet reuse standards, particularly for agricultural and irrigation purposes. The review highlights the importance of integrating CWs with advanced technologies to improve effluent quality and ensure compliance with regulations. Overall, CWs are a promising technology for water reuse, especially in regions facing water scarcity and climate change impacts.