Federal Constitution in validity modified, in several aspects, the text of the Code of the Waters. One of the done alterations was the extinction of the Private Domain of the Water, foreseen in some cases as an old legal diploma. All of the bodies of water, starting from October 1988 became of public domain. Another modification that the Constitution introduced, that is worthy of reference, was the establishment of only two domains for the bodies of water of Brazil: the Domain of the Union, for the rivers or lakes which become more than a federated unit or that serve as a border among those units, or enter the territory of Brazil and of the neighboring country or of this they come or for the same to extend; and the Domain of States, for the waters superficial or underground, fluent, emerging and in deposit, excepted, in that case, the current of work of the union.

It is important to point out that: the first beginning is of the adoption of the hydrographic basin as a unit of planning. However, the hydrographical basin, according to its global concept, taking into consideration the underground waters of its vertical projection, as much as it should incorporate the demands and the relationships with the adjacent basins and the remaining of the territory of the federated unit covered just partially by the same; The multiples uses of the water, that it puts all of the categories users in equality of conditions in access terms to that natural resource. In Brazil, traditionally, the electric section acted as the only agent of the process of water resources superficies favoring that section to the detriment of the other categories users of the water. The fourth is the one of the decentralized administration and participation. The philosophy behind the decentralized administration is that whatever can be resolved in the government's lower hierarchical levels won't be solved by higher levels of that hierarchy. In other words, what can be resolved in the regional governments' should be resolved there not in Brasília or in the State Capitals