Proposição de diretrizes para a efetivação do enquadramento do Rio Piranga na bacia do Rio Piranga em Minas Gerais

Abstract

The water bodies legal framework in accordance with predominant use is one of the instruments of National Water Resources Policy, established by Law 9433, January 8th, 1997. This instrument aims to establish water quality standards that may be achieved or maintained in order to meet population's needs. This study aimed to present the current situation of Piranga River framework (tributary of Doce River) and submit proposals with the interest of assisting the suggested legal framework execution plan in the hydrographic basin area. The Hydrographic Basin of Piranga River is characterized by its rural settlement (basically agricultural) and communities which are consisted of less than 10 (ten) thousand inhabitants per municipality. One of the major problems of this basin is the release of sewage without treatment into water bodies, which fosters the water quality deterioration. By means of the statement from Water Resources Action Plan of Planning Unit and Piranga Water Resources Management (PARH), it was purposed a legal framework of Piranga River in Level 1 (according to the resolution CONAMA 357/2005) for the stretch between the upstream and Piranga City, and Level 2 for the remaining stretch. In order to achieve the proposed framework, the plan yet presented some targets related to water quality, sewage implementation, recovery of Permanent Preservation Areas (APPs) and environmental adequacy of Conservation Units (Ucs) management. During this research development, it was possible to conclude that Piranga River waters give evidence of several sites infested by E. Coli, furthermore the municipalities along Piranga River are in an alarming condition with regard to sewage system and solid waste management. In relation to the targets established by PARH, it was verified that only actions related to planning were accomplished, highlighting the development of Municipal Basic Sanitation Master Plans (PMSB), serving 76% of municipalities along the river. With the purpose of assisting the execution of Piranga River framework, it was suggested the implementation of a Communication and Social Mobilization Plan (PCMS), municipal public managers training, the use of digital tools for mapping the areas which may be recovered and the inclusion of municipalities in the action planning for water quality recovery of Piranga River and tributaries.