Analysis of E. coli contamination in groundwater during the dry season

Abstract

Changes in seasons or the occurrence of rain are factors that affect groundwater quality, especially in areas with low Drinking Water Distribution Companya coverage. The purpose of this study was to analyze the quality of groundwater during the dry season in three urban villages in Bekasi City, and the factors that influence it. Comparison of the values of pH, TDS, E. coli, and Total Coliform with clean water quality standards and descriptive statistical analysis was carried out to compare the level of risk of E. coli contamination, namely low-very high risk. Based on the results of the study, it was found that the concentration of E.coli and Total Coliform did not meet the quality standards of clean water and it was known that the risk of E.coli contamination was very high in Sumur Batu was 56%, Jatirangga 38%, and Jatiluhur 52%. Spearman rank statistical method was used to determine the factors that influence and obtained a very weak relationship on the occurrence of rain 7 days before sampling and the distance of wells and septic tanks to the concentration of E.coli in the dry season.