Charlie Meurer is a senior chemical engineer at Stanley Consultants, Iowa. He specialises in water purification. I think his summation of the environmental status of our water supplies is 'right on'.
"You must die from some cause. It is the will of Allah.
There are still radionuclides in the environment from the genius atmospheric tests of hydrogen bombs in the late 50s and early 60s.
Fauna in some river basins have been affected by excreted pharmaceuticals that pass through the waste treatment systems.
We pride ourselves on being cutting edge of science and the best version of the human species since inception, but repeatedly ignore the affects of our processes.
Rivers no longer catch fire with regularity but we still dump our waste into the environment without any concern for the long term damage it does. It's okay if the material is at a low enough concentration and even better if we cannot measure our waste.
Pigs are not the only animal that wallows in its own filth. Fish and frogs on mood elevators, beta blockers and estrogen therapies should not be the price of progress; fish and frogs have no choice and we do.