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Problem statement: Mercury mineralization occurred in Azzaba (north-eastern Algeria)&#13; as a part of mercurial Numidian belt, consists of numerous of Hg deposits (Koudiat Sma, Mrasma,&#13; Guenicha, Fendek, Ismail and Ras Elma). These deposits are hosted in a variety of lithologies&#13; including sandstone, limestone, breccias and conglomerate. The ores occur as cinnabar deposits in&#13; Ypresian-Lutetian formations. Although the quantity and type of information relating to mining&#13; operations within Azzaba remains insufficient and sparse an assessment of the impacts that mining&#13; and processing activities, have had or are likely to have, on water resources is required to describe&#13; the evidence of the origin and the extent Approach: 17 ground water samples were collected at&#13; different locations within the Hg mineralized area and analyzed to assess the source, degree and&#13; extent of the contamination. Results: The primary effect of mining is degradation of tens of&#13; kilometers of disturbed streams, thousands hectares of disturbed land including valuable ecosystems.&#13; chemical analysis showed that ground waters were also adversely affected by pollutants loading, the&#13; alluvial aquifer (composed primarily of silty sand and gravel) that serves as the primary source of&#13; drinking water for Menzel Ben Dishe, Es-sebt and Zaouia communities surrounding Ismail mercury&#13; complex shows high concentrations of Hg and other heavy metals. Conclusion: These high values&#13; were associated and controlled by mixed origin with similar contribution from anthropogenic and&#13; geoginic sources

Impact of Mercury Mine Activities on Water Resources at Azzaba-North-East of Algeria