Later, this entity was transformed into the Drinking Water Company (Spanish: Empresa de Agua Potable), which administered the service until 1913.

[5] In 1918, this institution undertook the construction of the La Menacho (El Agustino) reservoir with the application of alumina to the water and the expansion of the distribution network.

[6] On June 12, 1981, the National Service for Drinking Water Supply and Sewerage (Spanish: Servicio Nacional de Abastecimiento de Agua Potable y Alcantarillado, SENAPA) was created, modifying the structure and function of ESAL, establishing the Service for Drinking Water and Sewerage of Lima (Sedapal) as a subsidiary company of Senapa.

In 1992, Sedapal became dependent on the Ministry of the Presidency as a state-owned company, under private law with technical, administrative, economic and financial autonomy.

In recent years, Sedapal carried out important works that improved the water supply for all the residents of Lima and Callao: Inlet No.