There are predominately two ways in which the world’s population acquires its drinking water. If you live in the country side of rural America, it is more likely than not that a well supplies your household with water. This groundwater, like wells and springs, is generally coined to be “good” quality in reference to bacterial pathogens from faecal-oral contaminations. However, the other source is from rivers or bodies of water called surface water. These sources can have potential causes of contamination that end up being carried away by the surface waters, which in return is the pathway for bacterial pathogens. When referring to faecal-contaminated water it is assumed that Vibrio cholerae is always present.
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Figure 1. Satire representation of cross-contamination among surface water and water treatment plant.
No fret however, the water treatment for V. cholerae has long been easy. Slow sand filtration has been acknowledged as the adequate treatment and removal for V. cholerae. At lower temperatures however, this method becomes less effective due to ice build up (World Health Organization, 1997). There are many more in-depth procedures for drinking water treatment that may be discussed next week! If there’s no next week, I will add them to this blog post instead.
- Hayden Swartz 10/20/17
Bibliography
World Health Organization (1997). Cholera in 1996. Weekly Epidemiological Record, 72:89–96.
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