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. 2020 Mar 25;17(7):2172. doi: 10.3390/ijerph17072172

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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(A): Mean log₁₀ E. coli concentration detected in the different types of POC (standard deviation bars shown). (B): Mean log₁₀ E. coli concentration detected at the POC in each district. A measurement of zero E. coli was replaced by 0.5 to enable the log transformation.