Nature-based solutions (NbS), such as Floating Treatment Wetland Systems (FTWS), offer cost-effective, ecologically sustainable methods for improving water quality in lakes. This study implemented an FTWS in Nagdaha Lake, Lalitpur, Nepal, and evaluated community-level science communication through a structured survey. Following stakeholder consultations, community engagement, World Wetland Day events, and awareness programs, a survey was conducted with 104 households (20% of 521) within a 350 m radius of the lake. Results showed that 88% of respondents recognized the FTWS installations but demonstrated limited understanding of their function, while 12% were unaware of the intervention. Participation in outreach activities significantly improved public comprehension of FTWS and their scientific basis. The findings emphasize the need for effective science communication to foster local ownership, awareness, and support for NbS initiatives.