This article explores the responses to acknowledged anthropogenic transformations of Lake Naivasha in Kenya, whose ecosystem is considered to have been disturbed by the intensification of agricultural uses of natural resources (notably land and water) over the last half century. It examines the ways in which a “payments for environmental services” (PES) project has been implemented, reflecting the rationale of ecological modernization. This article aims to challenge the environmental narrative that supports the project by revealing its oversimplifications. Empirical data demonstrates how the environmental issues addressed by the project are embedded in historically inherited land trajectories. This in turn forces us to reflect on the necessary question of responsibility, an issue at the heart of the debate since the emergence of the Anthropocene concept.