CLEQM is a multidisciplinary organization dedicated to finding solutions to environmental problems. Our expertise cover environmental chemistry and microbiology, aquatic toxicology, water quality modeling, and risk assessment. CLEQM is an advanced analytical facility supports the expansion of research activities in the Nile basin in addition to the new challenges of the national problems. CLEQM houses a full line of sophisticated analytical equipment operated by a team of expert researchers, specialists and technicians. In order to cover all analytical needs, five departments were established: Inorganic Chemistry, Organic Chemistry, microbiology, eco-toxicology, soil and aquatic environment. A computer and information system supported by an advanced laboratory information management system (LIMS) is also in use. CLEQM is an internationally accreditted facility, obtained its accreditation from CALA (Canadian Association for Environmental Analytical Laboratories). The system insures a full scale enforcement of QA/QC program under ISO/IEC 17025 - 2017 general requirements for the competence of testing and calibration laboratories.