KAJIAN RISIKO MIKROBIAL PADA SUMBER AIR MINUM DI KELURAHAN CICADAS, KOTA BANDUNG

• Main Author: Sari Annaningdiah, Diniati
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/34379
• Institution: Institut Teknologi Bandung

Drinking water is one of the sources of microbial pathogens that cause diseases in human. Nowadays, drinking water sector in developing countries are still dependent only on the examination result of final product quality. With the possibility of contamination in drinking water starting from starting point (raw water intake)until its consumption by human, it is not enough to just referring the overall drinking water quality on the final product quality. One of the solutions to this problem is Quantitative Microbial Risk Assessment (QMRA) method. This study aims to determine the quality of drinking water in households by calculating the number of coliform bacteria and fecal coli in the raw water of drinking water, water treatment effluent, and drinking water that are ready to be consumed in the household, and also to know the correlation between the quality of drinking water in households with the residents health. Examination of coliform and fecal coli bacteria used the Most Probable Number (MPN) method. Among 7 water samples from the water refill depots in Kelurahan Cicadas, 4 of them were contaminated with coliform bacteria and 3 of them were contaminated with fecal coliform in the average MPN/100 ml value 30 and 17. The examination results of drinking water samples in household level showed the average MPN/100 ml value of coliform and fecal coli reached 46 and 36 for refill water, and 443 and 405 for cooked water tap. These results showed that although drinking water has been treated and processed, there are still risks of it being contaminated by coliform and fecal coli in the household level.With fecal coli as indicator in the occurrence of diarrhea case, calculation shows that the infection probability is 1.2 x 10-6 for refill water and 1.4 x 10-5 for tap water.