This study was undertaken after a report of drinking water industries which suggested the existence of a relation between algal proliferation (algal bloom) in resource water and coliform non-conformity in distribution networks. Our objective was thus to estimate if algal organic matter (AOM) could be used as a substrate by E. coli and explain its resuscitation in drinking water. For this purpose, E. coli was inoculated in sterile dechlorinated drinking water supplemented with organic matter of various origins in order to reach +0.2 (±0.1) mg BDOC L−1 (AOM, glucose or acetate). The results showed that the addition of AOM (naturally secreted by algae or released after a chlorine or ozone stress) in drinking water can represent a risk for water biological stability: indeed, AOM allowed either a higher cellular production, or a better maintenance of cultivability of E. coli than those observed in non-supplemented sterile drinking water, glucose or acetate solutions (in spite of equivalent additions of BDOC). Growth of E. coli was even up to 10 times higher in the presence of AOM coming from ozonated algae.
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Research Article|
December 01 2004
Influence of algal organic matter on Escherichia coli behaviour Available to Purchase
C. Bouteleux;
*Département Environnement et Santé Publique, Service d'Etudes et de Recherches en Environnement et Santé, UHP Nancy I, Faculté de Médecine, 9 avenue de la Forêt de Haye, BP184, 54505 Vandoeuvre-lès-Nancy, France (E-mail: [email protected])
E-mail: [email protected]
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S. Saby;
S. Saby
**Veolia Water, Anjou Recherche, Chemin de la Digue, BP 76, 78603 Maisons-Laffitte, France (E-mail: [email protected])
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D. Tozza;
D. Tozza
***Compagnie Générale des Eaux, le Carillon, 6 esplanade Charles de Gaulle, 92751 Nanterre Cedex, France (E-mail: [email protected])
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J. Cavard;
J. Cavard
****Syndicat de Eaux D'Ile de France, 14 rue Saint Benoît, 75006 Paris, France
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V. Lahoussine;
V. Lahoussine
*****Agence de l'Eau Seine Normandie, 51 rue Salvadore Allende, 92027 Nanterre, France (E-mail: [email protected])
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L. Mathieu
L. Mathieu
******Laboratoire d'Hydroclimatologie Médicale Santé Environnement, EPHE, Faculté de Médecine, 9 av. de la Forêt de Haye, BP184, F-54500 Vandoeuvre-lès-Nancy, France (E-mail: [email protected])
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Water Supply (2004) 4 (5-6): 399–407.
Citation
C. Bouteleux, S. Saby, D. Tozza, J. Cavard, V. Lahoussine, L. Mathieu; Influence of algal organic matter on Escherichia coli behaviour. Water Supply 1 December 2004; 4 (5-6): 399–407. doi: https://doi.org/10.2166/ws.2004.0131
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