In Nairobi, water rights emerge not through legal recognition alone but through relationships with infrastructurally powerful actors. Residents must engage with specific individuals across institutional levels who control urban water distribution. This explains neighborhood disparities in water access and why some residents secure better supplies than others. The fragmentation of water control challenges traditional legal and normative frameworks of water rights. Understanding how rights are embedded in everyday socio-material relationships is crucial for comprehending how people establish water access and thereby concretize their right to water in practice.