INCREASING THE RISK OF POLLUTION DECREASING THE BACTERIOLOGICAL QUALITY OF THE WELL WATER OF THE POPULATION OF DENPASAR CITY

Abstract

The need for drinking water is increasing along with the increase in the population of Denpasar City. Population pressure on land causes wells to become increasingly polluted, which has an impact on reducing the quality of raw water sources. The aim of the research is to analyze the level of pollution risk in reducing the bacteriological quality of well water. Analytical research, with a cross sectional design. The research sample was determined using a sampling quota of 60 wells. A survey was carried out to determine the level of risk of well pollution using an inspection form and water samples were taken for laboratory testing of key MP Coliform/E.coli parameters. The results of the study showed wells with a low pollution risk level: 18 (30.0%), medium: 18 (30.0%) and high: 24 (40.0%). Bacteriological quality of well water that meets the requirements: 16 (26.7%) and not eligible: 44 (73.3%). There were 11 types of well pollution risks identified, the dominant of which was not meeting construction requirements. There is a significant relationship between the level of pollution risk and the bacteriological quality of well water, the higher the level of pollution, the lower the bacteriological quality of well water. Residents of Denpasar City are expected to continue making efforts to control risk factors for well pollution, so that the bacteriological quality of well water can be improved.