Índice de perdas do sistema de abastecimento de água potável do distrito de Flores-Russas-CE

Abstract

This paper presents an evaluation of the behavior of the water loss index of the district of Flores, located in Russas/CE. It was prepared from a case study where a micrometer replacement service was performed. Volume data measured in 2016, 2017 and 2018 and May 2019 were collected and analyzed. The analysis showed that the loss rate was 30.60% in 2017 and decreased to 26.41% in 2018 after the replacement of water meters, which took place in December 2017. This drop of 4.19% represents, possibly, the loss rate related to micrometering instruments, since, due to the data available during the development of this work, these were the only elements exchanged in the distribution network. The behavior of the monthly volume measured by a random sample of ten hydrometers for May 2017, 2018 and 2019 was evaluated. This analysis showed elevation, decrease and even constancy of the measured volumes. Although these instruments may have a significant impact on the total loss ratio, most of these are probably due to other factors. Therefore, in order to have a more efficient supply system, it is necessary to apply a multi-factor strategy, which works on improvements in commercial management and investigation of fraud and real losses, arising from leaks in the distribution network. These actions should be permanently promoted, aiming at a more sustainable use of water, a resource that is scarce, especially in the Northeast.