Yazdan Mahmodian - Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Majid Farhadi - Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Saeed Ghanbari - Department of Biostatistics and Epidemiology, School of Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Farshid Ghanbari - Department of Environmental Health Engineering, School of Health, Research Center for Environmental Contaminants, Abadan University of Medical Sciences, Abadan, Iran
Fereshteh Filban - Department of Health Promotion and Education, School of Health, and Social Determinants of health Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Mohammad javad Mohammadi - Environmental Technologies Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran ۶Department of Environmental Health, School of Health, Air Pollution and Respiratory Diseases Research Cen

Background & Aims: The quality of drinking water includes the microbial, chemical and physical parameters of water, and non-standard values of these parameters cause water pollution. Water improvement has a direct relationship with the reduction of infectious diseases. The aim of this study was to Investigating and determining the critical points Ahvaz drinking water. Materials and Methods: This descriptive sectional study was done during ۲۰۱۹ to ۲۰۲۲ (۳ years). Tests and monthly reports are based on the methods listed in the method standard were collected directly from distribution network drinking water in Ahvaz drinking water. Statistical analysis, including the one-sample t-test was used to compare the average with the standard level. The significance level was ۰.۰۵ used by SPSS version ۲۲ software in all analyses. Results: result of this study, out of ۱۷۲ cases, the cause of the crisis is due to broken water pipes, ۶۲ cases are in the west region and ۱۱۰ cases are in the east region. Based on result, out of ۲۲ cases, the cause of the crisis is due to the lack of sewage overflow in ۱ case in the western region and ۲۱ cases in the eastern region. In total, there is a significant difference in the occurrence of crisis causes in the water network between the east and west regions of Ahvaz, and the east region (۸۶.۴% of crisis cases) has a higher percentage of crisis causes than the west region of Ahvaz (۱۳.۶%). from crisis cases) is included. Conclusion: In general, the best way to guarantee the quality of drinking water, reduce incidents and record critical cases in the drinking water distribution network is to implement a comprehensive management system with the cooperation of all relevant organizations. The new approach of the World Health Organization (WHO) to achieve this goal is to implement the water safety program.

Drinking water, Hazard analysis and critical control points, Water distribution network, Ahvaz, Iran