At the present time, somatic and male-specific coliphage and human enterovirus groups are being considered as indicators of possible pathogenic human enteric virus contamination from fecal contamination.
A primary attribute for any indicator of fecal contamination is its prevalence at the source and in associated ground water.
It must be consistently found in the source material at concentrations that are measurable with available techniques.
Over a period of ten months, male-specific and somatic coliphage ranged from ~7000 to ~4,000,000 PFU/L in the effluent from a multi-user septic-tank.
Unlike the values determined for septic-tank effluent, coliphage concentrations measured in ground water over this same period only varied by five-fold.
Coliphage concentration in ground water under the down-gradient edge of the drainfield contained ~1000 PFU/L. This concentration decreased at - 1 log10/5 m during 17.4 m of ground-water transport.
From these data, coliphage concentrations in septic-tank effluent seem sufficient to allow their use as indicators of fecal contamination in ground water.
Mots-clés Pascal : Pollution eau, Eau souterraine, Rejet eau usée, Fosse septique, Virus, Enterovirus, Picornaviridae, Coliphage, Bactériophage, Fèces, Devenir polluant
Mots-clés Pascal anglais : Water pollution, Ground water, Waste water discharge, Septic tank, Virus, Enterovirus, Picornaviridae, Coliphage, Phage, Feces, Pollutant behavior
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0018134
Code Inist : 001D16A04B. Création : 31/05/1999.