Water pollution Sources of water pollution 1.Definition:Water pollution is any chemical,biological, or physical change in water quality that has harmful effects on living organisms or that makes water unsuitable for desired uses. 2.Types,effects,and sources of water pollution (see Table 1) 3. Self-Purification processes in rivers (Figure 1) 4.Point and non-point sources of water pollution.(Figure 2) s.Eutrophication in Lake from point and non-point sources(Figure 3) 6.Groundwater contamination(Figure 4Water pollution Sources of water pollution 1. Definition: Water pollution is any chemical, biological, or physical change in water quality that has harmful effects on living organisms or that makes water unsuitable for desired uses. 2. Types, effects, and sources of water pollution (see Table 1) 3. Self-Purification processes in rivers (Figure 1) 4. Point and non-point sources of water pollution. (Figure 2) 5. Eutrophication in Lake from point and non-point sources (Figure 3) 6. Groundwater contamination (Figure 4 )