While removal rates for the broader group of micropollutants covered by the Directive were consistently strong, the project found results for PFAS compounds specifically to be more complex, reflecting the well-documented difficulty of removing these persistent substances through conventional water treatment, a challenge distinct from the mixture of pharmaceuticals and other organic micropollutants the same technologies handled more effectively. Beyond the technology piloting, the project produced two other outputs of practical relevance: a methodology for monitoring and assessing PFAS across the Baltic Sea and its catchment area, now feeding into the Baltic Sea Action Plan and OSPAR's parallel work on the North Sea, and a PFAS risk-assessment tool for local authorities, since adopted by cities in the region and now being extended through a follow-on project testing a municipal handbook in eleven municipalities across Sweden, Finland, Estonia and Latvia.

The project's own concluding message, that preventing pollution at source is more effective and cost-efficient than removing it afterwards even with advanced technology, echoes a position increasingly voiced across EU-level PFAS discussions, and the project explicitly calls for expanding the availability of PFAS-free products and for a general restriction on PFAS in industrial use, a policy position reflecting the project consortium's own advocacy rather than an EU institutional stance.

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