The Ag(I) atom in the title compound, [Ag(NO(3))(C(10)H(20)N(4))(2)]·C(2)H(5)OH·H(2)O, is coordinated by the N atoms of two N-heterocycles [N-Ag-N = 151.5 (1)°]; the approximately linear coordination geometry is distorted into a T-shaped geometry owing to a long Ag⋯O(nitrate) bond [2.717 (4) Å]. The N atoms of the N-heterocycles that are not involved in coordination point towards the lattice water mol-ecule, which functions as a hydrogen-bond donor. The water mol-ecule itself is a hydrogen-bond acceptor towards the ethanol solvent mol-ecule. Hydrogen bonds of the type N-H⋯O give rise to a layer motif parallel to (001).