Swimmers urine killing hundreds of fish

Swimmers in Eichbaum Lake near Hamburg, Germany are killing fish by the hundreds.

By urinating in the lake, the residents are increasing the amount of phosphates in the water to levels that are fatal to the fish.

The phosphates clog the fish gills and cause them to suffocate.

Local authorities estimate that each swimmer is excreting up to half a litre per day; to counteract the chemical imbalance they have put almost 150 tonnes of anti-phosphate agent into the lake.

Swimmers are being strongly encouraged to use toilets rather than the lake

[Source]