Cryptosporidium oocysts and viruses present in drinking water supplies pose a significant threat to public health worldwide. Presence of emerging contaminants such as microplastics is also an area of growing concern for the water industry, regulators, governments, and consumers. The aim of this study was to facilitate maximising the safe recycling of recovered process water streams at WTWs. This goal was achieved through delivering:

• A detailed review of the best available techniques (BAT) to detect, monitor and remove Cryptosporidium, viruses and microplastics from recovered process water streams.
• A gap analysis of the expert reports by Badenoch and Bouchier to highlight monitoring, treatment and control advancements made since 1998.
• Expert recommendations for systematic minimisation of operational and control risks associated with the safe recycling of recovered process water at WTWs, and
• A cost-quality model, to assist water companies with treatment technology comparison and selection for recovered process water treatment and recycling.

CD for Maximising the safe return of recovered process water