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. 2017 Jan 17;12(1):e0169502. doi: 10.1371/journal.pone.0169502

Fig 3. Total silver levels among water samples taken from households using ceramic water purification systems over 12 months.

Fig 3

(A) Silver concentrations among households were either using the ceramic water purification system (CWF) or with the silver-embedded ceramic tablet (CWF+SCT). (B) Total silver concentrations among households with water storage containers with control and silver-embedded ceramic tablets. Data points represent average silver concentrations. Standard error was used to calculate error bars.