Climate change and microbiological water quality at California beaches

Jan C. Semenza, Joshua S. Caplan, Guido Buescher, Tapash Das, Mitchell V. Brinks, Alexander Gershunov

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Daily microbiological water quality and precipitation data spanning 6 years were collected from monitoring stations at southern California beaches. Daily precipitation projected for the twenty-first century was derived from downscaled CNRM CM3 global climate model. A time series model of Enterococcus concentrations that was driven by precipitation, matched the general trend of empirical water quality data; there was a positive association between precipitation and microbiological water contamination (P < 0.001). Future projections of precipitation result in a decrease in predicted Enterococcus levels through the majority of the twenty-first century. Nevertheless, variability of storminess due to climate change calls for innovative adaptation and surveillance strategies.

Original languageEnglish (US)
Pages (from-to)293-297
Number of pages5
Issue number3
StatePublished - Sep 2012


  • Climate change
  • Enterococcus
  • Gastroenteritis
  • Precipitation
  • Recreational water use

ASJC Scopus subject areas

  • Ecology
  • Health, Toxicology and Mutagenesis


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