04977nas a2200493 a 4500 20260818133347.0 200831s2018 th n m|rtt |0 0 eng d .b12309436 AIT Thesis no.UWEM-18-02 Mutua, Rhoda Mutanu Health risk of waterborne infection in contaminated urban floodwater : the case study of Sukhumvit in Bangkok, Thailand Pathum Thani, Thailand : Asian Institute of Technology, 2018 1 online resource (84 leaves) : ill. (some col.) Thesis ; no. UWEM-18-02 A thesis submitted in partial fulfilment of the requirements for the degree of Master of Science in Urban Water Engineering and Management Jointly offered by Asian Institute of Technology, Thailand and UNESCO - IHE, Delft, the Netherlands Thesis (M. Sc.) - Asian Institute of Technology - UNESCO-IHE, 2018 Extreme rain events may lead to sewer overflows which when mixes with surface and drinking water contaminate and increases the level of pathogen concentration in it. This poses a great risk to public health especially when individuals are exposed to contaminated water resulting in water - borne infectious diseases, which is a global challenge. However, it is still unclear the extent to which the infections pose a risk to public health. Th is study analysed flooding and reported diarrhoea cases in Sukhumvit, Thailand. The results showed a close relationship between diarrhoea and rainfall events. An average of 575 more diarrhoea cases was reported during wet months as compared to dry months w ith population - based incidence rates of 809 cases per 100,000 people. The study further looked into the land - cover change in the area for the years 1988, 2002 and 2015 using Landsat images obtained from USGS website. The results depicted the highest change happened in 1988 - 2002 with an increase of urban areas from 1533 ha to 2453 ha and vegetation decreased from 1873ha to 964 ha. The rate of change was - 3.5% for vegetation cover and 4.3% for urban areas during the period 1988 - 2002. Vegetation cover decrease d continuously up to 2015 to 605 ha with urban areas increasing continuously to 2824 ha. The study used 1D Hydrodynamic Advection - Dispersion model to simulate the dispersion of faecal coliform concentration in the drainage network. The results depict high er concentrations for dry weather flows and a large dilution of concentration on onset of a rainfall event resulting in drop of the concentration. This is due to the large amounts of runoff generated. The study further coupled 1D/2D Hydrodynamic Advection - Dispersion model to simulate the overland flow along the streets. The results present maximum flood depth of 0.478m, 118 minutes maximum flood duration and 1 . 74 *10^ 5 MPN/100ml concentration of faecal coliform. Most of the areas indicate low hazard of infe ction from waterborne pathogens. During non - peak hours the general risk in most areas is low since the number of people along the streets is low whereas d uring peak hours the risk in most areas is medium with some parts recording high risk Waterborne infection Thailand Bangkok Urban health Thailand Bangkok Floods Thailand Bangkok Sutat Weesakul, Chairperson Vojinovic, Zoran, Co-chairperson Torres, Arlex Sanchez, Examination committee Thammarat Koottatep, Examination Committee Shrestha, Sangam, Examination Committee Netherlands Fellowship Program (NFP), Scholarship donor Asian Institute of Technology. Thesis ; no. UWEM-18-02 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B04280 .b12309436 mnait m 240422 0 200831 m a m 0 mnait mnait mnarc mnarc 40 61 20 Barcode : 30050120895064 CREATED : 2019-05-21 RECORD # : i13186656 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : - CREATED : 2019-05-21 RECORD # : i13186668 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120980031 CREATED : 2020-08-31 RECORD # : i13292262 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 Barcode : 30050120980023 CREATED : 2020-08-31 RECORD # : i13292274 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 54524 54524 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.UWEM-18-02 30050120895064 2026-08-18 13:33:47 2026-08-18 40 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no.UWEM-18-02 2026-08-18 13:33:47 2026-08-18 61 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.UWEM-18-02 30050120980031 2026-08-18 13:33:47 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 50.00 0 AIT Thesis no.UWEM-18-02 30050120980023 2026-08-18 13:33:47 2 2026-08-18 20