Vulnerabilidade natural à contaminação do aquífero fraturado no município de Arvorezinha - RS

Abstract

The contamination of groundwater by large urban centers is a problem that affects a large portion of the Brazilian population. Thus, this study aims to assess the natural vulnerability to aquifer contamination at the scale of the Municipality of Arvorezinha - RS. For this, information from 89 wells available in the groundwater information system database was used, and the GOD system was applied to determine vulnerability. The results indicated that the local soil presents a high resistance to environmental impacts, with the presence of the Serra Geral Aquifer System and the Serra Geral Formation, in its predominance. In this context, the constructive characteristics of two existing cemeteries in the urban area were verified, both of which presented adequate conditions for installation and operation. In the municipal area, vulnerability ranged from insignificant (7.72 % of the area) to high (0.16 %), with a predominance of the lower class (90.62 %), with contaminating activities (Cemeteries and gas stations) were located in the smallest classes (insignificant and low). Thus, it is concluded that the study area presented an intrinsic vulnerability to predominantly low contamination, in the largest portion of the Municipality. This is mainly due to the characteristics of the local physical environment. It is recommended to carry out more specific complementary studies, evaluating, for example, the water quality of wells, in order to identify changes, if present. and the contaminating activities (Cemeteries and gas stations) were located in the smallest classes (Insignificant and low). Thus, it is concluded that the study area presented an intrinsic vulnerability to predominantly low contamination, in the largest portion of the Municipality. This is mainly due to the characteristics of the local physical environment. It is recommended to carry out more specific complementary studies, evaluating, for example, the water quality of wells, in order to identify changes, if present. and the contaminating activities (Cemeteries and gas stations) were located in the smallest classes (Insignificant and low). Thus, it is concluded that the study area presented an intrinsic vulnerability to predominantly low contamination, in the largest portion of the Municipality. This is mainly due to the characteristics of the local physical environment. It is recommended to carry out more specific complementary studies, assessing, for example, the water quality of the wells, in order to identify changes, if present.

The contamination of groundwater by large urban centers is a problem that affects a large portion of the Brazilian population. Thus, this study aims to assess the natural vulnerability to aquifer contamination at the scale of the Municipality of Arvorezinha - RS. For this, information from 89 wells available in the groundwater information system database was used, and the GOD system was applied to determine vulnerability. The results indicated that the local soil presents a high resistance to environmental impacts, with the presence of the Serra Geral Aquifer System and the Serra Geral Formation, in its predominance. In this context, the constructive characteristics of two existing cemeteries in the urban area were verified, both of which presented adequate conditions for installation and operation. In the municipal area, vulnerability ranged from insignificant (7.72 % of the area) to high (0.16 %), with a predominance of the lower class (90.62 %), with contaminating activities (Cemeteries and gas stations) were located in the smallest classes (insignificant and low). Thus, it is concluded that the study area presented an intrinsic vulnerability to predominantly low contamination, in the largest portion of the Municipality. This is mainly due to the characteristics of the local physical environment. It is recommended to carry out more specific complementary studies, evaluating, for example, the water quality of wells, in order to identify changes, if present. and the contaminating activities (Cemeteries and gas stations) were located in the smallest classes (Insignificant and low). Thus, it is concluded that the study area presented an intrinsic vulnerability to predominantly low contamination, in the largest portion of the Municipality. This is mainly due to the characteristics of the local physical environment. It is recommended to carry out more specific complementary studies, evaluating, for example, the water quality of wells, in order to identify changes, if present. and the contaminating activities (Cemeteries and gas stations) were located in the smallest classes (Insignificant and low). Thus, it is concluded that the study area presented an intrinsic vulnerability to predominantly low contamination, in the largest portion of the Municipality. This is mainly due to the characteristics of the local physical environment. It is recommended to carry out more specific complementary studies, assessing, for example, the water quality of the wells, in order to identify changes, if present.