MICROBIOLOGICAL EVALUATION OF RESERVOIRS DRINKING WATER IN HURGHADA CITY PART1: STUDIES ON SOME PHYSICAL, CHEMICAL PROPERTIES AND ISOLATION OF WATER BORNE PATHOGENIC BACTERIAL STRAINS FROM HURGHADA PLANTS AND RESERVOIRS DISTRIBUTED IN THE CITY.

Abstract

This study deals with the some physical, chemical and microbiological parameters of drinking water samples
collected from Hurghada city which included five plants and twenty eight different types of reservoirs from
different localities involved entire city where the total collected samples are 33.The isolation of water–borne
pathogenic bacteria was conducted using 5 general and specific nutrient agar media for isolating
Salmonella & Shigella, Gram negative bacteria, fecal coliform bacteria, Vibrio cholera and other Vibrio
species. Ihe physical and chemical properties and the microbial analysis for water samples from water
treatment plants of drinking water are in a compliance with the Egyptian standards (2007) for drinking water
quality which recommended that the drinking water sample should be free from bacterial indicators and
pathogens that is refer to success of chlorination processes in the plants. The samples collected from all
reservoirs give high bacterial count on different nutrient media. The obtained results revealed that the
microbial analysis of water samples from water reservoirs are not in a compliance with the Egyptian standards
(2007) for drinking water quality which refer to storage condition for the drinking water are not suitable