How does environment affect population?

As population increases ,more houses need to be built.Therefore shallow lakes and ponds or other low lying areas are filled up for use.This causes loss of lake and pond ecosystems.Increased waste production such as garbage and drainage finally contaminates the water table and the nearby water odies like rivers,streams or seas.Increase in populations also leads to furthur congestion and pressure on facilities like housing,employment,transportation,power and health care.Problems regarding waste management and waste disposal also become large.Garbage dumps fringe every major city and this has led to specialized waste management.But many times the rules are not maintained strictly and hence the toxins from these leach into the soil and contaminate the water table thereby affecting the people living in that particular region.