The Main Challenges for Improving Urban Drainage Systems from the Perspective of Brazilian Professionals

Urban drainage systems play an important role in the complex ecosystem of cities and are often subject to challenges that hinder their functioning. Although identifying these challenges is essential for developing policies and actions to improve drainage systems, there is a lack of studies addressing these challenges. This work has two objectives to contribute to filling this gap: (1) to research the main challenges that make it difficult to improve urban drainage systems; and (2) to prioritize them. We conducted extensive and detailed bibliographic research in which 15 challenges were identified, and a survey with 30 Brazilian professionals with experience in the concerned field. The results showed that 15 challenges identified in the literature were considered important by the survey respondents. It also showed that the most important challenges concern the inadequate functioning of drainage infrastructure, dynamics of city expansion, system maintenance, vulnerability of urban areas, public policies, and investments.

Automated summary

Urban drainage systems play a vital role in city ecosystems but face challenges that hinder their effectiveness. This study aims to identify and prioritize these challenges. Through literature research and a survey of professionals, 15 challenges were identified, with inadequate infrastructure, city expansion dynamics, maintenance, urban vulnerability, public policies, and investments being the most important.