Water sampling and analysis - WHO

4. Water sampling AND sampling and analysisIdeally, a laboratory infrastructure should be established which will enable allsamples to be returned to a central or regional laboratory within a few hours ofbeing taken. However, this depends on the availability of a good road system andof reliable motorized transport for all sampling officers, and these are not availablein many countries. Thus, although it may be possible to establish well-equippedcentral and even regional laboratories for Water analysis , at the provincial anddistrict levels it may be necessary to rely on a relatively small number of simpletests. As noted in Chapter 1, this approach is sometimes called critical-parameterwater most important factor to take into account is that, in most communities,the principal risk to human health derives from faecal contamination.

GUIDELINES FOR DRINKING-WATER QUALITY 52 4.1 Sampling The guidelines provided here take into account experience in surveillance programmes in remote, typically rural, areas …

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