Human settlements, industries and agriculture are the major sources of water
pollution. Globally, 80 percent of municipal wastewater is discharged into water bodies
untreated, and industry is responsible for dumping millions of tonnes of heavy metals,
solvents, toxic sludge and other wastes into water bodies each year (WWAP, 2017).
Agriculture, which accounts for 70 percent of water abstractions worldwide, plays
a major role in water pollution. Farms discharge large quantities of agrochemicals,
organic matter, drug residues, sediments and saline drainage into water bodies. The
resultant water pollution poses demonstrated risks to aquatic ecosystems, human
health and productive activities (UNEP, 2016). http://www.fao.org/3/a-i7754e.pdf
Globally, agriculture accounts for 92% of the global freshwater footprint; 29% of the water in agriculture is directly or indirectly used for animal production [25].
Cici's Capstone 