Seasonal Variation of Fecal Contamination in Drinking Water

Regular monitoring of the seasonal variability of fecal contamination of drinking water sources is an important step in improving continued access to safe drinking water. In Science of the Total Environment, we systematically reviewed 22 studies and show improved drinking water sources tend to be more contaminated during the wet season, regardless of bacteria type, source, climate zone, or population setting. Monitoring guidelines set by the World Health Organization and national water quality agencies should include guidance on seasonally representative water quality monitoring.

Kostyla, Caroline, Rob Bain, Ryan Cronk, and Jamie Bartram. 2015. “Seasonal Variation of Fecal Contamination in Drinking Water Sources in Developing Countries: A Systematic Review.” Science of The Total Environment 514: 333–43. doi:10.1016/j.scitotenv.2015.01.018.