5. Conclusions
Inactivation data obtained for HEV after UV radiation indicate that this emerging pathogen should be inactivated up to 99.99% following a fluence of 231.94 J/m2(195.02–269.18), which is below the radiation level already proposed in international guidelines(400 J/m2). FCS solutions for point-of-use disinfection achieved sig-nificant reductions in virus concentration, although the reductions were less than the 4.5 LRV recommended by WHO regulations.Experimental data gathered here for UV disinfection and FCSsolutions, combined with our current knowledge of HEV stability following chlorine treatment, represent an important body of evidence to create water treatment policies in areas at risk of HEV water contamination. Current chlorination and UV radiation treatment standards should be considered safe protocols for HEV disinfection. However, the use of FCSs as POU solutions will likely require complementary treatments, such as an extra disinfection step, to ensure higher viral reductions.