In this paper, LPV identification and gain-scheduling (GS) control of a sewer system composed by a detention tank and a single reach sewer is proposed. First, a linear parameter-varying (LPV) control-oriented model for the single reach canal is presented and identified using LPV identification methods. Then, LPV GS theory is used to designing a PI GS controller guaranteeing performance and stability. Finally, results using the designed LPV GS controller is compared with the ones obtained using classical GS.