Analysis the Relationship Between the Distance of Groundwater Wells to the Septic Tank on Groundwater Quality

Abstract

Groundwater plays an important role in human life as it is often used in daily life and used as raw water for drinking water. This study aims to determine the quality of groundwater in several public facilities buildings at one of the campuses in Indonesia and to analyze the relationship between the distance of groundwater well to the septic tank to the parameters of groundwater quality. A total of 34 groundwater samples were collected from different bore wells and analysed for water quality parameters such as pH, TDS, nitrate, manganese, and E. coli. pH and TDS was measured by pH meter and TDS meter; nitrate and manganese were determined using a spectrophotometer. The E. coli concentrations were determined by the Most Probable Number (MPN). The results of the analysis showed that the concentration range of TDS (11-194 mg/L), nitrate (0.35-12.45 mg/L), manganese (0.1-12.8 mg/L), E. coli (0-49 CFU/100ml), and pH value (4. 50-8.45). The results of the chi-square test showed that the distance between bore wells and septic tank did not have a significant relationship to the quality of groundwater with pH, TDS, nitrate, and manganese parameters with Asymp. Sig. > 0.05. However, the distance between bore wells and septic tank has a significant relationship to the parameter E. coli with the Asymp. Sig. 0.035 < 0.05.