Water polution

Water pollution   is the contamination of  water bodies (e.g.  lakes ,  rivers ,  oceans ,  aquifers  and  groundwater ). This form of  environmental degradation  occurs when  pollutants  are directly or indirectly discharged into water bodies without adequate  treatment  to remove harmful compounds. Water pollution affects the entire biosphere – plants and organisms living in these  bodies of water . In almost all cases the effect is damaging not only to individual  species  and population, but also to the natural  biological communities . Water pollution is a major global problem which requires ongoing evaluation and revision of  water resource policy  at all levels (international down to individual aquifers and wells). It has been suggested that water pollution is the leading worldwide cause of deaths and diseases, [1] [2]  and that it accounts for the deaths of more ...