Storage reservoirs : A first barrier for pathogenic micro-organisms in the Netherlands.
IAWQ-IWSA joint specialist conference on reservoir management and water supply. Prague, CZE, 1997/05/19.
Production of drinking water from river water, abstracted either directly from the river or from storage reservoirs, requires the application of barriers for pathogenic micro-organisms.
About one third of the total production of drinking water in the Netherlands is derived from surface water, mainly the River Meuse and branches of the River Rhine.
The results of extensive monitoring programmes show that the microbiological water quality of the River Rhine and River Meuse is strongly influenced by domestic and agricultural waste water discharges, with respect to the River Meuse mainly in the Liège-region in Belgium.
Densities of Cryptosparidium and Giardia in both rivers are comparable ; the highest density was found in the Belgian Meuse basin.
Elimination rates of 1.7-to 3.1 10log-units for pathogenic micro-organisms were found in Dutch storage reservoirs, which can thus be considered as an important first barrier for pathogenic micro-organisms.
The elimination capacity of reservoirs is influenced by retention time and contamination by waterfowl.
To meet the proposed quality criteria for pathogens in drinking water, however, additional barriers are required.
Mots-clés Pascal : Lac artificiel, Pays Bas, Europe, Contamination, Lutte sanitaire, Qualité eau, Eau potable, Rivière, Enterovirus, Picornaviridae, Virus, Cryptosporidium, Apicomplexa, Protozoa, Campylobacter, Campylobacteraceae, Bactérie, Milieu eau douce, Cours eau, Parasite, Pathogène, Microorganisme, Aves, Vertebrata, Giardia, Oiseau aquatique
Mots-clés Pascal anglais : Artificial lake, Netherlands, Europe, Contamination, Sanitary control, Water quality, Drinking water, Rivers, Enterovirus, Picornaviridae, Virus, Cryptosporidium, Apicomplexa, Protozoa, Campylobacter, Campylobacteraceae, Bacteria, Freshwater environment, Stream, Parasite, Pathogenic, Microorganism, Aves, Vertebrata, Waterfowl
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0348010
Code Inist : 002B30A02A. Création : 27/11/1998.