Aspectos sanitários de água de poços no município de Santo Antonio de Jesus – Ba

Abstract

The city of Santo Antonio de Jesus has only 7% of its area with sewage. The launch of the same in septic tank can compromise the quality of groundwater. Thus, the aim of this study was to evaluate the quality of groundwater in different regions of the city, comparing parameter settings microbiological and physical-chemical and groundwater wells existing in the inner city, in neighborhoods with sewage and those utlizam other means of deposition of waste. Samples were collected from November/2011 to May/2012 in 6 points and analyzed in the laboratories of NEPA / CCAAB / UFRB, Cruz das Almas, and Embasa, Santo Antonio de Jesus. Of physico-chemical parameters analyzed only chloride, total hardness and alkalinity were 100% in compliance with the law. The parameters pH were in disagreement (70%), color (3.33%), turbidity (10.00%), total nitrogen (50%) and total phosphorus (16.67%). In relation to total coliform, 13.33% of the samples were non-standard. Only 6.67% of the samples had fecal coliform. To the wells analyzed there was no difference between the quality of groundwater located in the area treated and untreated sewage, as the results found in the well 5, located in an area of wastewater treatment, were similar to other wells in the area without treatment. Nitrogen and phosphorus in disagreement were located in areas that lacked sanitation and possessed agricultural activities nearby.