Vorgehen zur quantitativen Risikobewertung mikrobiologischer Befunde im Rohwasser sowie Konsequenzen für den Schutz des Einzugsgebietes und für die Wasseraufbereitung

In recent years, more and more countries see irrigation using reclaimed water as an opportunity to secure and enhance agricultural production. Despite the benefits of water reuse, the scientific community raised several concerns and challenges for human health and the environment. This includes chemical risks. Effluents from urban wastewater treatment plants usually contain a wide range of organic chemicals. Such chemicals remaining in the water after the treatment process may cause hazards for human health, contaminate surrounding soil and water resources, and even compromise drinking water sources. Once crops on irrigated sites are exposed to chemicals, the potential transport to and accumulation in the edible parts of fruits and vegetables need to be controlled to rule out their introduction into the food chain. Finally, problems concerning the release of wastewater-borne antibiotics into the environment are starting to gain attention. For these reasons, agricultural irrigation should face more stringent quality requirements in order to minimize chemical risks. Combinations of measures reducing chemicals at the source, technical and natural water treatment processes especially to remove chemicals with persistent, bioaccumulative and toxic (PBT), or persistent, mobile and toxic (PMT) properties, good agricultural practices, and supplementary preventive measures (e.g. knowledge transfer to the stakeholders involved) will be necessary to bring about and ensure safe irrigation in the future. While internationally many regulations and guidelines for water reuse have successfully been implemented, questions remain whether the current knowledge regarding chemical risks is sufficiently considered in the regulatory context. The introduction of a new regulation for water reuse, as attempted in the European Union, poses a good opportunity to better take chemicals risks into account.

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Vorgehen zur quantitativen Risikobewertung mikrobiologischer Befunde im Rohwasser sowie Konsequenzen für den Schutz des Einzugsgebietes und für die Wasseraufbereitung

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Leitlinien für die risikobewertungsbasierte Anpassung der Probennahmeplanung für eine Trinkwasserversorgungsanlage (RAP) nach § 14 Absatz 2a bis 2c Trinkwasserverordnung

Leitlinien für die risikobewertungsbasierte Anpassung der Probennahmeplanung für eine Trinkwasserversorgungsanlage (RAP) nach § 14 Absatz 2a bis 2c Trinkwasserverordnung

Regulating water reuse for agricultural irrigation: risks related to organic micro-contaminants

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