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Chemical pollution happens when certain compounds are improperly disposed of. This can affect the environment by disrupting the processes of the ecosystem. Chemical pollution happens when certain compounds are improperly disposed of. This can affect the environment by disrupting the processes of the ecosystem.
Point Source Pollution. Point source pollution is defined by the U.S. Environmental Protection Agency (EPA) as âany single identifiable source of pollution from which pollutants are discharged, such as a pipe...â. Examples of point sources include:1  discharges from wastewater treatment plants; 2  operational wastes from industries; and.oint Source Pollution. Point source pollution is defined by the U.S. Environmental Protection Agency (EPA) as âany single identifiable source of pollution from which pollutants are discharged, such as a pipe...â. Examples of point sources include: