Research Article

Water Sources Quality in Urban Slum Settlement along the Contaminated River Basin in Indonesia: Application of Quantitative Microbial Risk Assessment

Table 4

The risk of infection due to consumption of various types of water sources.

Type of water sourceConcentration of fecal Coliform (CFU/100 ml)Dose of consume fecal Coliform (CFU/person/day) (Equation (1))Probability of infection cause by fecal Coliform (Equation (2))Annual probability (Equation (3))

Bottled water0.252.810.58 × 10−80.21 × 10−5
Refill bottled water2.4627.095.60 × 10−82.04 × 10−5
Tap water1.3514.863.07 × 10−81.12 × 10−5
Borehole1.6718.343.79 × 10−81.38 × 10−5
Dug well1366.6715033.343107 × 10−81127.9 × 10−5
Spring60660136.4 × 10−849.7 × 10−5