Pathogenic bacteria isolated from water samples in clay and stainless steel containers from mosques in Tripoli are shown in Table 1. Species differentiation of Aeromonas is shown in Table 2. Of the 29 organisms examined, 23 (79.3%), were resistant to ampicillin, 1 (3.4%) to tetracycline, 4 (13.8%) to trimethoprim-sulfamethoxazole and all (100%) were susceptible to ceftriaxone, ciprofloxacin and gentamicin. Resistance profiles of pathogenic bacteria isolated from drinking water in clay and stainless steel containers from mosques in Tripoli to antibiotics are shown in Table 3.