Programming Brief: Building on existing marketing exchanges in Melanesian informal settlements to improve WaSH

Who is this brief for? WaSH practitioners and programmers who aim to improve WaSH in informal settlements by fostering marketing exchanges. Purpose of this brief: In informal settlements, we observed all of the four main marketing exchange types: market-based (i.e. monetary), non-market-based (i.e., philanthropic), command-based (i.e., regulatory) and culturally-determined (i.e., social) marketing exchanges (shown in Figure 1 below). Yet, recent efforts to improve WaSH through marketing approaches have focused only on market-based exchanges. A broader approach that builds upon the range of already existing marketing exchanges may help enhance WaSH and well-being for all in informal settlements, rather than only for those that can engage with market-based exchanges.