Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais, Av. Presidente Antônio Carlos, 6627, Belo Horizonte, CEP 31270-901, MG, Brazil E-mail:
Department of Chemical Engineering, Federal University of Minas Gerais, Av. Presidente Antônio Carlos, 6627, Belo Horizonte, CEP 31270-901, MG, Brazil.
J Water Health. 2020 Feb;18(1):48-59. doi: 10.2166/wh.2019.153.
Proper water quality monitoring is a valuable tool for water resource management, helping to identify polluting sources and risks related to the use of water resources. One of the main types of contamination found in Brazilian water bodies is fecal contamination, which originates mainly from point source pollution through wastewater disposal. Thus, this study analyzed water quality monitoring data from the responsible environmental body (Minas Gerais Institute of Water Management, IGAM), related to the fecal contamination indicator (FCI), for the years 2000-2018. This was done for the Minas Gerais portion of the São Francisco River basin (SFRB-MG), one of the most important basins in the country. The 10 sub-basins in the area were compared using statistical tools. The work found significant differences between the sub-basins in terms of FCI concentration, highlighting the most impacted ones (SF2, SF3, and SF5) as also being the most densely populated. It is necessary to invest in sanitation measures in order to ensure that water resources are preserved, as well as to reduce the public health risks of downstream municipalities that are supplied with previously contaminated water.
水质监测是水资源管理的重要工具，可以帮助识别污染源和与水资源利用相关的风险。在巴西水体中发现的主要污染类型之一是粪便污染，主要来源于通过废水处理的点源污染。因此，本研究分析了负责环境机构（米纳斯吉拉斯水资源管理研究所，IGAM）的水质监测数据，该数据与粪便污染指标（FCI）有关，时间跨度为 2000 年至 2018 年。这是在巴西圣弗朗西斯科河流域（SFRB-MG）的米纳斯吉拉斯部分进行的，该流域是该国最重要的流域之一。使用统计工具对该地区的 10 个次流域进行了比较。研究发现，FCI 浓度方面的次流域之间存在显著差异，突出了受影响最严重的次流域（SF2、SF3 和 SF5），这些次流域也是人口最密集的地区。有必要投资于卫生措施，以确保水资源得到保护，并减少下游接收先前受污染水的市政当局的公共健康风险。
