Caracterização da qualidade da água em poços rasos de consumo humano no município de Erval Seco/RS

Abstract

Water is the most important natural resource for life on earth and factors such as potability, quality and, quantity are relevant to the continuity of humanity. This study aims to characterize water quality in shallow wells for human consumption in the municipality of Erval Seco / RS. Physical, chemical and biological analyzes were carried out on the well and water tap on four rural properties in the interior of the municipality during 2019. The results found were compared with Consolidation Ordinance No. 5 (Annex XX) and with the World Health Organization, both sides 2017. Turbidity, nitrite, fluoride and total hardness variables showed results that there are in accordance with the current legislation, however the apparent color, iron total and pH variables are not in conformity at a given moment or evaluated property. Temperature, electrical conductivity, true color and total alkalinity variables were also analyzed, which do not have maximum values ​​allowed in current legislation. The biological variables of total coliforms and Escherichia coli were present in all evaluated water samples. Macroscopic analysis was performed in shallow wells, with properties 1 and, 3 being classified as reasonable and properties 2 and, 4 as good. In this way, the waters are unsuitable for human consumption, making it necessary to disinfection them by means of a chlorination system so that they can be consumed safely. Better preservation and protection in the vicinity of shallow wells is also advised, reducing risks to human health.