Effect way to clean the polluted beach

This one is actually relatively easily solvable with present day technologies- The technology does now exist for power plants to burn unprocessed raw sewage, and the three byproducts are electricity, clean drinkable water and sterile ash which can be used as fertilizer or landfill- This has already been adopted in a small handful of cities in Sweden, possibly in other parts of the world too- Don't know why this is not catching on elsewhere yet. Sounds like a situation with no clear losers, everyone everywhere benefits...
Self help is the best help. British citizens should spend their summer holidays cleaning up the beaches and protesting outside the gates of the authorities that are doing the polluting.