The City of Montreal describes its water as a public service. This thesis complicates if not challenges such a designation by showing how emergent water-related infrastructure procurement practices are introducing global and financial markets into Montreal water. Indeed, Montreal’s Green Economy is arguably valuing all water-related infrastructure with the intention of commodifying it fully. While such commodification is diluting Montreal’s Water Commons with private actors and private decision-making, away from democratic procedures. The following actor network analysis shows multiple and heterogenous actors, relations and processes that are implicated in this transformation.