RISK ANALYSIS OF COLIFORM BACTERIA CONTAMINATION IN THE USE OF CIWALENGKE RIVER SURFACE WATER AS A NON-PIPED RAW WATER SOURCE (CASE STUDY: CIWALENGKE VILLAGE)

• Main Author: Daulah Salsabila, Marsha
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/84964
• Institution: Institut Teknologi Bandung

The people of Ciwalenke Village have been experiencing a clean water crisis for decades, marked by using a water source from the Ciwalengke River that is polluted by domestic waste and indicated to contain Coliform bacteria that can cause diarrheal and other diseases. This study aims to measure the exposure of water from sanitation facilities contaminated with Coliform bacteria from Ciwalengke River to the health of local residents to determine the right environmental management concept. Risk analysis was conducted using the Quantitative Microbial Risk Assessment (QMRA) method. The concentration of E. coli bacteria in residents' clean water sources is measured using the Membrane Filter method with Coliform Chromocult Agar (CCA) media. Data on the volume of water consumption of each individual is also needed, which is obtained from the results of distributing questionnaires. All residents' clean water sources are not suitable for use because they contain E. coli bacteria. The estimated annual burden of disease from E. coli contamination was calculated with the Beta-Poisson Model and Monte-Carlo analysis where it was found that the DB value was in the range of 0,00013 – 0,0013. This value exceeds the WHO limit of 10-4 so that the water source is not suitable for use in daily activities. Efforts to deal with environmental problems in Ciwalengke Hamlet can be done with the intervention of many parties by building communal septic tanks, placing trash bins, building IPAS, cleaning water reservoirs, and implementing clean and healthy living behaviors.