Environmental Research Center participate the interlaboratory program (Proficiency Test Final Report No. 003), which was organized by the Central Organization for Standardization and Quality (COSQC)/Department of Laboratory Accreditation. This participation included examination of drinking water (Drinking water 02-2016) for the chloride, calcium and magnesium ions, turbidity and TDS. ERC among the sixteen Iraqi laboratories has passed the examination, according to the Iraq Accreditation System (IQAS), Report (003) on 05.18.2016 issued by the above department. Our personnel participated in this test were Eman Shaker Awad, Zahra Zahrao Farhan, Ahmed Safa Abdul Hassan, Ahmed Alwan Nassif and Ali Nasser Ali.