In 1980 the military government under Jorge Rafael Videla decentralized the provision of water and sanitation services in the main cities served by OSN, except for the metropolitan area of Buenos Aires where OSN continued to provide services.
The military government under Jorge Rafael Videla decentralized the provision of water and sanitation services in the main cities. This was in 1980. These main cities were served by OSN. This was except for the metropolitan area of Buenos Aires. OSN continued to provide services.