HACCP (Hazard Analysis and Critical Control Points) to guarantee safe water reuse and drinking water production - a case study

To obtain a sustainable water catchment in the dune area of the Flemish wes t coast, the integration of treated domestic wastewater in the existing pot able water production process is planned. The hygienic hazards associated w ith the introduction of treated domestic wastewater into the water cycle ar e well recognised. Therefore, the concept of HACCP (Hazard Analysis and Cri tical Control Points) was used to guarantee hygienically safe drinking wate r production. Taking into account the literature data on the removal effici encies of the proposed advanced treatment steps with regard to enteric viru ses and protozoa and after setting high quality limits based on the recent progress in quantitative risk assessment, the critical control points (CCPs ) and points of attention (POAs) were identified. Based on the HACCP analys is a specific monitoring strategy was developed which focused on the contro l of these CCPs and POAs.