What effect does fertilizer have on ground water.?

Question

please give me info. on this.

Answer 1

too much nitrogen fertilizer in your groundwater can increase nitrate concentrations that could make your drinking water smell like pee.

ground water ultimately becomes surface water and too much fertilizers can promote algal bloom (search: eutrophication) and make the water mildly toxic to fish and other aquatic animals.

Answer 2

It washes away.  Don't obsess over it.