In this paper, we explore the use of a playful dilemma activity, a survey and public data analysis to spark citizen awareness and reflection on water use within the UK. Water security ensures access to fresh water for survival and society’s needs. There is significant citizen agency in water security that impacts the freshwater reserves. However, in many countries, water security is under-discussed. Encouraging spaces for individuals to assess their water use, identify waste, and adopt sustainable practices is key to sustaining freshwater resources for the future. We present a case study conducted as part of the GREAT project to stimulate citizen discussion on water use and its subsequent impact on the broader water system. Through a series of activities, citizens can reflect on their water use, consider the future forecast of water security within the UK, and experience a playful dilemma to save a city from the effects of drought. In this dilemma, players are part of an organisation tackling a city’s water crisis. Faced with limited water resources, players analyse data on the population's usage and suggest behaviour changes to reduce consumption. The challenge lies in balancing the need for water conservation with the risk of proposing changes that are resisted by the population. The players must convince the facilitator of both the practicality and acceptability of their plans. Success restores water security, but failure reveals the consequences of inaction. Within this playful discussion space, we create an exchange for citizens to elicit attitudes and preferences on current water use and explore how individuals might be “nudged” into less wasteful behaviour. In this paper, we describe the co-design of this qualitative approach, share findings on attitudes and preferences elicited (n = 19), and reflect on this method as a tool for fostering awareness and meaningful citizen discussions.