Sustainable Development Goal 6 affirms the need to “ensure water availability, sustainable water management and sanitation for all” and thereby highlights a current problem in Spain caused by climate dynamics in the south and southeast of the peninsula and the islands. This study is based on a non-probabilistic online survey with 455 participants (n = 455) carried out to identify citizens’ views across the Autonomous Communities and detect good and bad practices, including efficiency gains and specific problems, derived from water management. Differences in perceptions were found regarding place of residence, gender, and education level, which were all especially significant in relation to territory. Generally, people who live in areas with greater water abundance are less aware of the need to make good use of it. There are no major differences in terms of gender, although there is a greater awareness among women about the effects of climate change and the need for good water management. It is argued that education should employ innovative materials and pedagogically motivating resources from school to university levels.