content · water out of the plant root zone. figure. 30.22 fertilizer mobility and soil clays. the...

Microbiology related to Waterpurification and

Content:Waterpurification

Water quality controlSoil types

Microbes in soilBioremediation

Water reservoir

Sandbed filter

1. Suitable for analysis of all types of water

2. Should be present whenever enteric pathogens are present

3. Should survive longer than the pathogenic die hards

4. Should not reproduce in contaminated water: inflation!

5. Should be harmless to humans

6. Its level should have direct relationship to degree fecal pollution

7. Assay procedure: indicator specific, high sensensitivity/low det. level

8. Tests should be easy

Criteria for Indicator organism

Fig. 41.2

Bog corpses

Well preserved in the acid soils

Fig. 29.13a-d

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