The paper addresses some rhetorical uses of the figure of water management from the perspective of an affirmative approach to contamination which Derrida saw as constitutive of affirmation itself. Contaminated water and its discontents discussed in the text frequently appears in various kinds of writings as a frightening figure of contamination which simultaneously brings in the figure of water management as a way of controlling the purity of cultural exchanges and transmissions in which, as Caroline Petronius puts it, contagion journeys (...) out of medicine into culture. The paper also addresses water and its management from the perspective of Astrida Neimanis’s liquidizing of the border between the solid and the fluid as a border between the human and the inhuman. This perspective opens up the sphere of mutual contamination of the human and the inhuman and translates posthumanist theoretical positions into spheres of affirmative exchanges managed not by masters, but by Donna Haraway’s companion species whom, or which, we all are. (shrink)