The work accomplished had the intenetion of examining the actions related to the use of springs for population supply, inserted in the Brazilian environment legislation. It is a case study in one of the satelite cities of the Brasilia Federal district, where the urban growth has demanded a great efforta from the institution responsable for supplying water in finding alternatives, considering the the region has small courses of water to face the growing demand. The Federal District, located in tablelands is, as matter of fact, a spring region, in despite of a considrable dry seasonduring the winter. In a scenario pointed out as emergency, The "Fumal" was constructed to supply the city of planaltina inside na protected ecological area, with a very restricted use, wher the tributaries os The Amazion and Platina basins join together. The analisis concentrates in the conflicts derived between the need of the environmental protection in spring areas and a gap in the legislation realted to the use of water resources. It also raises up a problem reffering to the federal legislation inconsistencies that can not be applied at a local scale, which takes to dismiss the law.