Reserach 4 emerging water pollutants that are in the waterways that effect the d

Reserach 4 emerging water pollutants that are in the waterways that effect the development of fish and amphibians. Explain how they affect the development of these animals. What is the toxic levels? Is it EPA and FDA regulated? Mention the maximum intake.
Pollutants – Lead, Estrogen, and two more (you can choose please)
Devlopment – organs, neurological, everything