| cyanobacteria and their toxins in treated-water storage reservoirs in abha city, saudi arabia. | occurrence of toxic cyanobacteria in drinking and recreational waters poses human health at risk as they can release potent toxins into the water. in the present study, open and covered treated-water storage reservoirs as well as their relevant tap waters in abha city, saudi arabia, were surveyed for the presence of cyanobacteria and their toxins. the results revealed the contamination of most open reservoir and tap waters by algae and cyanobacteria, with an abundance of toxigenic species of cya ... | 2007 | 17451766 |