Metropolitan Cebu, the third largest agglomeration in the Philippines with a population of approximately 3 million, faces significant challenges in managing domestic wastewater and solid waste. This mismanagement has led to the pollution of its water bodies, including the Mahiga Creek and the Butuanon River, the latter of which was declared dead in 1992 and can no longer support flora and fauna.

Between 2017 and 2025, seven international River Challenge Climate Cafes were conducted by Dutch universities of Applied Sciences and Filipino universities . During these events, teams of young professionals assessed the upstream, midstream, and downstream stretches of Metro Cebu's rivers and evaluated the vulnerability of 12 urban poor communities living along these rivers. The primary aim of these rapid appraisals was to raise awareness among community members, local governments, and students, as well as to build capacity.

Throughout the process, there was a shift from merely gathering data on pollution levels to engaging the community, identifying risks, and finding feasible solutions to mitigate these risks. Various methods were employed to measure water quality, river width, river discharge, flood heights, ecology, plastic waste pollution, and residents' perceptions. The results were shared online via Climatescan.org with the global climate adaptation community.

The findings demonstrate that river challenges are effective tools for creating context-rich learning environments for students, with more than 250 participants. The River Challenge Climate Cafe enable young professionals, primarily with technical backgrounds, to gain firsthand field experience, exposure to environmental degradation, severe pollution, and vulnerable communities, thereby enhancing their environmental awareness. Additionally, the river scan challenge proves to be a valuable tool for increasing awareness of river pollution and promoting rehabilitation efforts

How to cite: Heikoop, R., Boogaard, F., Abrenica, B., Fornis, R., Borgonia, K., Ledesma, D., Nasara, J., Boer, E., and Oudendammer, T.: Enhancing Environmental Awareness Through River Challenges: A Case Study of Metropolitan Cebu, Philippines , 12th International Conference on Urban Climate, Rotterdam, The Netherlands, 7–11 Jul 2025, ICUC12-1052, https://doi.org/10.5194/icuc12-1052, 2025.