Sources of pollutionAnthropogenic pollution endangers the natural environment: it causes the acidification of lakes, acid rain and even global warming (global warming). By identifying sources of pollutants, people can stop the spread of pollution. This work aims to discuss diffuse sources of pollution and focuses on three examples of this immense problem. Pollution sources can be divided into point sources and diffuse/non-point sources; the former refers to pollutants entering a natural system, e.g. a body of water, from a distinct location, through a direct route, e.g. a sewer pipe discharging sludge into a lake (Botkin, 1998). Diffuse pollution, on the other hand, results from a multitude of different sources that act in combination, for example lake acidification can occur due to deforestation, runoff and various other causes. These sources are often difficult to identify, which makes diffuse pollution often difficult to correct (Camic, 1993). Anthropogenic eutrophication is the addition of nutrients such as nitrates and phosphorus to the extent that algal blooms occur and cause a rapid decrease in oxygen in the water. and therefore a reduction in biodiversity (Anderson, 2003). Polluting sources of inland eutrophication are many and varied, but agriculture and industrial areas are at the center of the problem (EPA, 2004). Recently, there has been an increase in intensive agriculture and, consequently, an increase in livestock waste, fertilizers and pesticides (Reiss, 2000). Nutrient runoff from agricultural land can flow/seep into water bodies, e.g. In the Norfolk offshore, sewage sludge and residual solvents from industrial plants are often poorly disposed of and can flow into lakes (Anderson, 2003). An increase in impervious surfaces, for example roads and concrete, has led to an increase in runoff (EPA, 2003). Acid rain is caused by emissions of nitrogen oxides and sulfur provided by the combustion of fossil fuels in power plants, the use of fertilizers and vehicle exhaust (Beig,2004). Stopping acid rain is particularly difficult in terms of cutting off the sources because the world's population is increasing, and as a result, the world's population is also increasing.