Practitioner Perceptions of Mainstreaming Sustainable Drainage Systems (SuDS): A Mixed Methods Study Exploring Direct Versus Indirect Barriers

Hebba Haddad (), John Bryden and Stuart Connop
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Hebba Haddad: School of Psychology, University of East London, Stratford Campus, Water Lane, London E15 4LZ, UK
John Bryden: Thames 21, 78-83 Upper Thames Street, London EC4R 3TD, UK
Stuart Connop: Sustainability Research Institute, University of East London, 4-6 University Way, Docklands, London E16 2RD, UK

Sustainability, 2025, vol. 17, issue 5, 1-22

Abstract: Sustainable drainage systems (SuDS) represent an opportunity to use stormwater management as a mechanism to deliver multiple co-benefits. They can play a key role in urban climate change adaptation, restoring nature, and increasing health and social wellbeing. Despite these benefits, their uptake is limited with many practitioners reporting barriers to implementation. To explore these barriers, and to define actions to unlock scaling, our mixed-methods study explored comparative perceptions of SuDS practitioners within the UK. Survey research ( n = 48) provided an overview of broad experiences across a range of SuDS practitioners. Main barriers described were access to funds, difficulty retrofitting, cost to maintain, and the ownership of SuDS. Main issues having the least available information to support SuDS scaling were conflicts with corporate identity, cost to maintain, and collaboration between various stakeholders. Follow-up interviews ( n = 6) explored experiences among a contrasting subset of survey respondents: those who experienced the highest number of perceived barriers and those who experienced the fewest barriers to SuDS implementation. From these interviews, key themes were identified that categorized the barriers for SuDS implementations: people-related elements; limiting practicalities; and informational factors. The findings were differentiated between indirect barriers (i.e., soft barriers, such as individual practitioner knowledge and capacity gaps linked to poor knowledge exchange) and direct barriers (i.e., hard barriers including specific gaps in SuDS data and knowledge experienced more universally). The importance of differentiating between knowledge-based (indirect) barriers that can be unlocked by improved information-transfer solutions and actual (direct) barriers that need further considered approaches and the generation of new knowledge to overcome is highlighted. Evidence-based policy recommendations for governmental and SuDS-based organisations are presented.

Keywords: sustainable drainage systems (SuDS); urban water management; blue/green infrastructure; climate change adaptation; practitioner engagement; nature-based solutions (NBSs); barriers (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2025
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