Regarding water-saving behaviour, eight different aspects are analysed: (1) recycling water; (2) keeping a bottle of water in the fridge to have cool water; (3) thawing food in advance of use; (4) filling the kitchen sink(s) before washing up; (5) using the dishwasher and the washer machine at full load; (6) (semi) closing the stopcock to reduce the flow to taps; (7) turning off the tap while brushing one’s teeth or soaping, and (8) showering instead of bathing. Table 1 shows a descriptive analysis of the eight water-saving behaviours included in this paper.As Table 1 indicates, some water-saving habits are widely adopted by Spaniards. This is the case with “Showering instead of bathing” (96.6%), “Turning off the tap while brushing one’s teeth or soaping” (90.6%), “Thawing food in advance of use” (86.4%), “Using the dishwasher and the washer machine at full load” (81.5%) and “Keeping a bottle of water in the fridge to have cool water” (62.3%). On the contrary, behaviours such as “(Semi) closing the stopcock to reduce the flow to taps” and, especially, “Recycling water” are not widely followed by Spanish citizens (only 28.6% and 21.2%, respectively). In order to analyse those aspects influencing water-saving behaviour, several variables have been considered. In particular, the following factors are considered: environmental awareness, involvement of citizens in activities related to the environment, ecological attitude, ways of using devices (dishwasher and washing machine) and availability of watersaving devices. In addition some socio-demographical aspects are included: gender, household size, income and occupation. Table 2 shows items used to measure all the constructs and their reliability (Cronbach’s alpha)