ABSTRACT In-stream wetlands have emerged as a promising approach for improving drainage water quality. This paper assesses the efficiency and sustainability of natural in-stream wetlands (ISW) within two Egyptian drains (Tellin Drain and Faraa Al Bahwo Drain) for improving drainage water quality through a comprehensive SWOT analysis (Strengths, Weaknesses, Opportunities, Threats) and PESTEL (Political, Economic, Social, Technological, Environmental, Legal) analysis. The study assessed internal factors, including the cost-effectiveness, performance, and institutional challenges of ISWs, emphasizing their demonstrated capacity to improve water quality and their cost efficiency in pilot programs. However, the study also found weaknesses in institutional frameworks, technical capabilities, and management structure. Both wetland areas face significant external pressures, including political instability, economic challenges such as inflation and funding availability, and the impacts of climate change. Political stability and consistent policy are crucial for the success of ISW projects, yet both wetland areas struggle with governmental inefficiencies and leadership transitions. Economic factors such as inflation and inequality, particularly in Faraa Al Bahwo Wetland, pose additional risks to sustainability. Social factors, including rising health awareness and urbanization, contribute positively to wetland success, but population growth and social resistance remain substantial obstacles. Technologically, both wetlands face challenges related to outdated infrastructure, although advancements in data analytics and technology adoption offer opportunities for improvement. Environmental threats, including climate change and resource depletion, are significant but may be mitigated through effective environmental regulations. A PESTEL-SWOT integration matrix was developed to visualize the interaction between external factors and internal strengths, providing a strategic framework for stakeholders to optimize ISW implementation. These insights emphasize the need for a comprehensive approach to wetland management, integrating internal and external factors for effective and sustainable drainage water quality improvement. The study recommends several strategies to tackle these challenges and enhance the sustainability of ISW. EPADP should concentrate on improving internal management by providing staff training and clearly defining roles to boost coordination and accountability. Additionally, it is essential to develop a diversified long-term financing plan that includes public-private partnerships and international climate funds to secure sustainable funding.
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