When rain falls on a sanitary landfill, a potential environmental problem is the formation of Leach-ate.
When rain falls on a sanitary landfill and dissolves some solids into it, the water that is formed is known as leach-ate.
Leach-ate in this instance is quite toxic and can lead to the pollution of ground water when it is absorbed into the ground.
In conclusion, a potential problem is the formation of leach-ate.
Find out more on leach-ate at https://brainly.com/question/6470670.