Abstract The role of marketing in social issues has grown over the last thirty years since Kotler himself introduced the concept (Kotler & Zaltman, 1971). In the evolution of social marketing it has moved from being entirely marketing process orientated towards expanding its vision to other useful theories from the subject’s parent disciplines. Social dilemma theory, one such theory, evolved in the laboratories, computer programmes and field experiments of psychologists and economists. In 1991 marketers proposed the theory as an aid to understanding individual action in collective problems. The current study assesses the relevance of social dilemma theory for the marketing of water conservation behaviours in an emerging market. As such, it seeks to establish if the key variables were present and what, if any, impact large cultural forces, such as individualism and collectivism have on individual conserving behaviour. Individualism and collectivism were studied at the personal level of idiocentrism and allocentrism and along the sub-dimensions of horizontal and vertical individualism and collectivism. The interactions of these values on individual behaviour were studied, together with two key variables in social dilemma theory namely, perceived consumer effectiveness (PCE) and faith in others (FIO). Individual perceptions of resource abundance and attitudes towards non-marketing solutions, such as a sanctioning system, were investigated. The study was conducted among 444 teenage learners at secondary schools in Gauteng. A descriptive research design was used. The study found that there was an interaction between social dilemma variables and individualism/collectivism which did have an impact on individual conserving behaviour. Most, but not all relationships were verified. Collectivists required higher levels of perceived consumer effectiveness in order to engage in conservation actions, while individualists needed a greater sense of the co-operation of others. Faith in others and individualism/collectivism emerged as having a direct impact on consumer behaviour, while perceived consumer effectiveness was a moderator of the other variables and had no main, direct, effect on behaviour. Water was thought of as an abundant resource and in little need of conservation. Low income consumers favoured a sanctioning system to enforce compliance. The implications of the study for marketing theory and practice are discussed. -