Quality Assessment of Water Produced by RO-based Household Water Treatment using the HACCP system

the advantage of choosing Household water treatment over tap water for drinking is based on the human health assurance of health risks with these devices. The Hazard Analysis Critical Control Points system (HACCP) is a framework that identifies and manages significant hazards at the source to point of use in the process of producing drinking water. This study can be aimed at introducing of HACCP systems as a model to identify the most important potential hazards and control these risks in the flow diagram of RO-based Household Water Treatment in Tehran.
The possible hazards identified at each step of water production by household water treatment. According to the principle of Seven HACCP, Critical Control Point (CCP) is selected and determined critical limits, monitoring, and corrective action. Sampling water is taken from each critical control point. Physicochemical and microbiological parameters were measured by standard methods.
Results of CCP Risk assessment have confirmed that the parameters of pH, nitrate, total organic carbon, and total coliform and fecal coliform were in the critical limits for defined CCPs. While, the total hardness, fluoride, and HPC were in the critical limit only at the CCP1.
The results showed that the HACCP system can be used to reduce the risks, increase the safety of the output water of the household water treatment. To this end, regular monitoring must be carried out in the specified period by the appropriate operator.