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Frequently asked questions

What types of treatment should be used a aggressive water?

The type of treatment for aggressive water depends on other physico-chemical characteristics of water, specifically the alkalinity, conductivity and Glossary Link pH value. When it comes for instance to low-mineralized water, the appropriate treatment will consist in not only reducing the corrosivity…

How do non conventional resources contribute to water resource mobilization?

Most good quality water resources (salinity lower than 1.5 g/l) are already in use. Given that the brackish resource potential that can be found in the southern Tunisian region is substantial, there is need to start improving water quality by…

What is the future of water desalination in Tunisia?

In order to avoid overexploitation of groundwater as per the requirements of sustainable development, sea water desalination will be playing a major role in the future. The Tunisian authorities have previously called for tenders to build for the first time…

What should be done when someone has misgivings about water quality?

The quality of the water tap supplied to users is one of the main issues related to drinking water supply all customers are aware of. This issue should be prioritized by drinking water suppliers and health authorities. Therefore, water suppliers…

Sometimes water has temporarily a milk-like appearance; what is it?

This milk-like appearance as water tap runs is not related to the excess of chemicals such as slaked lime, chlorine or alumina sulfate used to treat water, neither to any other substance unlike the general opinion of users. To get…

What is Tunisia desalination production capacity?

Tunisia desalinated water production capacity amounts to approximately 110, 000 m 3/day produced by about 70 units; 57% of which is devoted to drinking water. Four desalination treatment plants run the production through the SONEDE: Kerkennah ( 3,300 m 3/day,…

Drinking water has at times a bad smelling and a chlorine taste. Is chlorine necessary and Isn’t it dangerous?

To ensure sound water disinfection and avoid post contamination while drinking water is stored and distributed, chemicals with residual powers are used. This is the case with the chlorine used in the form of bleach, chlorinated lime, chlorine dioxide or…

Why was the reverse osmosis employed?

This technique that consists in separating salts from water by means of a semi-permeable membrane under a gradient of pressure was selected following a research and economic report that showed reverse osmosis was the most appropriate approach considering its high…

Tunisia is located in a dust bowl, are water resources sufficient enough to ensure sustainable development?

Tunisia has indeed finite water resources. Her water potential is approximately equal to 5 billions m 3 per annum. The resources that can be mobilized per capita annually account for 465 m 3 and this is deemed by far lower…

Where do air bubbles come from?

Very small air bubbles may appear into water as the pressure drops or temperature rises because solubility in the air has decreased. The play of light is responsible for this typical milk-like appearance. This phenomenon has no impact on water…

AFRICAN WATER ASSOCIATION - Côte d'Ivoire - Abidjan - Cocody, Riviera Palmeraie, rond point place de la renaissance, immeuble SODECI 2e étage
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