Climate change has brought tremendous impact for people around the world. Indonesia is identified as one of country that are vulnerable to disaster, especially of which induced by climate change such as floods, droughts, sea level rise, changing rainfall patterns and temperature raise. The Indonesia Meteorology, Climatology and Geophysical Agency (BMKG) predicted that rising rain precipitation in Indonesia in 2023 which would likely increase the threat of hydrometeorological disasters such as floods and landslides. Although it is believed that the climate change produces a higher risk of hydro meteorological disasters, however, a study found that Indonesian has the highest climate change deniers among 23 other countries that participate in the study which shows that Indonesians people are still unaware of the impact of climate change to their environment. Environmental awareness is one of the important factors that need to be integrated into the disaster risk reduction planning. Therefore, identifying the environmental awareness of community live in the hydrological disaster-prone area would be beneficial for designing a disaster mitigation plan of the area and ensure the attainment of the SDG-11 sustainable cities and communities. Therefore, aimed of this research is to describe the environmental awareness of people live in vulnerable area which is prone to hydrological disaster. This research employs a survey method. This study involved 357 participants live in hydrological disaster-prone area in Indonesia. The environmental awareness scale was given to the participants. The result showed that the majority of the participants have a low level of environmental awareness.