Assessment Of The Physicochemical And Bacteriological Quality Of Spring Water In The Wilaya Of Tiaret (Algeria)

Abstract

The appreciation of the water quality of the surface is based on the measure of physicochemical parameters and the presence or the absence of organizations and watery, indicating micro-organisms of more or less a good quality of water.

It is within this framework that this study was undertaken to carry out a diagnosis of the water quality of the sources in the wilaya of Tiaret, by the physicochemical and bacteriological analysis and their comparison for the Algerian lawful standards and those of WHO. Thus, the taking away of water was carried out on the level of 06 sources. This water can generate harmful effects in the natural environment and health hazards for the populations which are in permanent contact and consuming this water without preliminary treatment. Located, generally in agricultural zones where the position risk is high.

At the end of this study, it arises as the near total of the analyzed parameters conforms as well with the national regulation as regards potability of water as to that of WHO.

Indeed, the results obtained on the physical level showed that the pH of this water is correct and their temperature is good.

On the chemical level, this water is also in the standards insofar as its hardness, the rate of dissolved salts as well as the contents of chloride are conformed to the national standards. We also note that the contents of the oxidable matter, phosphates, and nitrite are normal. The contents of calcium are normal except for the source of Tiaret (Gattara).

We realize that the contents of Nitrate largely exceed the standards of JORA (2014) in all the sources, except that of Dahmouni.

The microbiological analyzes carried out on the taking away revealed a complete absence of the pathogenic germs and germs of faecal contamination.

Following these results, we conclude that the source of Dahmouni is the only source where one can consume this water without danger and risk to human health.

To secure these risks, the spring waters must be supervised and controlled regularly and must respect the physicochemical and bacteriological limits of quality, fixed by the World Health Organization.