Following the creation of Obras Sanitarias de la Nación in 1912, the Great Reservoir became the flagship of the first state-owned sanitation company, which soon installed various facilities within its walls. Its professionals, technicians, and technicians designed, supervised, and executed engineering and architectural works of remarkable quality, which enabled even the most remote urban centers to have drinking water supply systems, stormwater drainage, and sewage systems, which decisively improved their hygiene and sanitation conditions.

At the Water Museum, we strive to pay a well-deserved tribute to this collective effort and the resulting historical and cultural heritage.

In these rooms, styled to reflect the 1920s and 1930s, we exhibit furniture handmade by OSN staff—in the company's own workshops—and instruments used both in the office and in fieldworks to bring infrastructure and service networks to the most remote corners.