Fig. 3 - Holme Pierrepont Indicator Organism Levels
Seasonal Variation
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Canoeist Pathogenic Illness Guide

PATHOGENIC ILLNESS INDEX | COMMENT AND FEEDBACK

Return to CHAPTER 4 (Water Treatment and Disinfection)

X Axis = Month of Sample

Y Axis - Geometric Mean Count

Link to Annex D

To compare these figures with statutory limits defined in EC Bathing Water Directive.