System assessment and analysis of dangers in water safety plan: a case study in a desert city in Iran in 2017

Document Type : Original Article


1 Department of Environmental Health Engineering, Qom University of Medical Sciences, Qom, Iran

2 Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran

3 Department of Environmental Health Engineering, Hamedan University of Medical Sciences, Hamedan, Iran

4 Department of Occupational Health Engineering, Qom University of Medical Sciences, Qom, Iran

5 Department of Epidemiology and Biostatistics, Qom University of Medical Sciences, Qom, Iran

6 Department of Environmental Health Engineering, Semnan University of Medical Sciences, Semnan, Iran

7 Quality Control Department, Water and Wastewater Company in Qom, Qom, Iran


Access to clean and safe drinking water has been the focus of  officialsin charge of supplying water  through many different methods. Water safety program is a new method for ensuring the safety of water by applying systematic prevention and risk analysis approach. The present study has been performed on a water supply system. Water Safety Plan contains 12 different steps which analyze topics such as system description, identifying dangers, risk analysis, etc. The checklist obtained by using the above steps will be applied as input information to a water safety program software named WSP-QATOOL. The risks identified and listed by experts in drinking water were scored using the world health organization data. Also, the results of data analysis are given in tables and graphs. The 12 different steps of analysis earned 212 points out of the total possible points of 440. Basins, water treatment, distribution network, and water outlet points earned 48.86 percent of these points and the reviewing step had 0.0 percent of the total points for coordination with water safety program. The questions related to the system description and identifying dangers and risk analysisstep with 100 percent point had the highest percentage in coordination with the program. System Analysis earned a score of 48.18 percent in general. In order to increase this score, the water safety program should be fully performed and a program should be developed to control the recognized risks with a specified amount to support it.


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