Global access to safe water: accounting for water quality and the resulting impact on MDG progress.

Int J Environ Res Public Health · 2012 · PMC3367284 · PMID 22690170

Europe PMC DOI

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likely to be significantno p-value reported

However, the effect is likely to be significant in the case of piped sources with discontinuous service that encourage users to store water in the home.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.