Kinematic viscosities of binary, ternary, and quaternary aqueous solutions containing poly(ethylene glycol) (PEG) with nominal molecular mass equal to 1000 g(.)mol(-1) and salts were determined at 298.2 K and various concentrations. The binary experimental data were used for adjusting the parameters of a Kumar-like equation. The adjusted parameters also allowed the viscosity prediction for multicomponent mixtures, with an overall deviation of 4.8%.