Abstract
Water is an essential component for humans, mainly used as drinking water. There are still many people in Indonesia who use springs as a source of drinking water, one of which is in Joben, Pesanggrahan Village, Montong Gading District, East Lombok Regency. Drinking water from springs can be polluted by contaminants such as bacteria, viruses and others during storage and distribution. This study aims to analyze the quality and microbiological feasibility of drinking water sourced from Joben Springs, Montong Gading, East Lombok. The research was carried out in May-June 2021. The research method used was purposive sampling with sampling carried out at three points: the spring, the main reservoir, and the residents' reservoir. The Coliform test was carried out using the Most Probable Number (MPN) method and Escherichia coli (E. coli) identification using Kirby Bauer. The results of this study indicate that the coliform MPN test from the spring sample obtained the highest value in the paddy field, spring, and house sample of 4,050/100 ml and was classified as class E clean water. Moreover, it was very poor water; the lowest was in mountain storage water of 390/100 ml, which was classified as water clean class C bad category. Water from the Joben spring is not suitable for direct consumption by the community, so it needs to be boiled first to kill bacteria and minimize health problems. All samples, there were no coliform bacteria of the E. coli group. The bacteria in all samples were bacteria from other coliform groups. Therefore, further analysis is needed to determine the content of other bacteria in the water at the Joben spring, Pesanggrahan Montong Gading, East Lombok.