included employees of a private company involved in the maintenance and management of the bridge. now, bbc wales investigates: what s killing our rivers? you see herons and dragonflies. you see lots of little shellfish in the shallow parts. sometimes you will see a salmon jumping out of the water. you start to realise that how many people don t have stuff like this, particularly in lockdown, when we were very grateful to have it. these school friends have made the most of a record breaking summer. like thousands of others. but there is something wrong with our rivers. a sad sight to see. it s absolutely devastating what with finding out here today. in the water, look at this. just look at it. this is algae. it s taking over our rivers and waterways. and when human and animal waste gets into a river not only is it bad for our health it is also full of nutrients like phosphate which act as a kind of super food for the algae. and as algae gets into the river, it strips the river
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