Manutençáo de poços tubulares profundos e suas implicaçÕes na qualidede das águas subterrâneas: êstudo de caso dos poços tubulares PT- 0'l e PT-02 do Sistême Paciência em Sáo Luís - MA

Abstract

water is currently one of the most precious environmental resources that exist and is also becoming one of the most scarce. Their conscientious use and the conservation of fresh water resources must be seen as a priority by society in general. ln order to have access to this resource, in many cases there is a need to build tubular wells, to use groundwater. However, for its use to be possible, it is essential that the wells are in a perfect state of use, that is, they must meet the standards of potability of water established by the National council for the Environment (coNAMA) No. 20 in ordinance No. 518. The present work aims to analyze how the maintenance of two of the tubular wells that are part of the paciência system (companhia de Águas e segotos do Maranhão) in the city of sáo Luis takes place, and how it is direcily linked to water quality. For this analysis, the physicochemical and microbiological pârameters were veriÍied by the supply company. The results found were compared to the limits allowed by coNAMA and, according to the potability ordinance, the two analyzed wells have their waters suitable for human consumption