RISK ANALYSIS OF COLIFORM BACTERIA CONTAMINATION IN THE WATER ENVIRONMENT AROUND RESIDENTIAL AREA RECEIVING DOMESTIC WWTP EFFLUENT (CASE STUDY: MALEER DOMESTIC WWTP, BANDUNG CITY)

• Main Author: Inarah Rahmat Hasby, Farisah
• Format: Theses
• Language: Indonesia
• Subjects: Teknik saniter dan perkotaan; teknik perlindungan lingkungan
• Online Access: https://digilib.itb.ac.id/gdl/view/69310
• Institution: Institut Teknologi Bandung

The quality of the water environment is crucial to fulfilling everyone's right to a decent environment. One of the efforts to prevent the entry of contaminants from residential into water bodies is to utilize domestic wastewater treatment technology. Maleer Domestic WWTP treats domestic wastewater from 63 house connections with Anaerobic Upflow Filter (AUF) technology. Although the WWTP is expected to prevent contamination, the results of the Maleer WWTP processing have not met the quality standards of the Minister of Environment Regulation No. 68 of 2016. this condition is indicated to have a polluting effect on the Cikapundung Kolot River and groundwater, which also contains Coliform bacteria. This study aims to measure the risk of Coliform bacterial contamination in the water environment around the Maleer Domestic IPAL on the health of residents to determine the appropriate concept of environmental management. Risk analysis uses the Quantitative Microbial Risk Assessment (QMRA) method. The concentration of E. coli bacteria in clean water and residents' drinking water was measured using the Multiple Tube Fermentation method with the Most Probable Number concept. All sources of clean water and drinking water for residents are unsuitable because they contain E. coli bacteria. The probability of daily infection from E. coli contamination was calculated using the Beta-Poisson Model and it was found that the highest risk was from drinking (0.132). Based on the type of water source used, dug wells provide the greatest daily infection probability (0.251). Repeated exposure in one year to the same water source gives the potential for infection of 1. This value exceeds the WHO limit of 0.0001, so the water source is not suitable for use in daily hygiene and sanitation activities. Tackling environmental problems in Maleer Village can be applied by involving various parties to manage wastewater by installing disinfection, monitoring, and maintenance of WWTP; maintaining the quality of the Cikapundung Kolot River by stopping BABS activities and disposing of garbage in the river; ensuring the quality of water sources is maintained at the source and shelter; maintain a healthy and clean lifestyle.