Filthy water and sludge settles by a storm overflow outlet discharging untreated sewage into a brook, feeding the River Thames, in Chalgrove, central England, Britain, November 19, 2024. British sewers mostly combine rainwater with wastewater. During exceptional rainfalls, water companies can make “spills” into waterways to prevent sewers from becoming overwhelmed. But many have been fined for releasing sewage too regularly. REUTERS/Dylan Martinez