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Pollution in Manila Bay in 2008. Manila Bay is the catchment area of the Pasig and Pampanga River Basins.
The Pasig River in the Philippines suffers from a high level of water pollution and efforts are being made to rehabilitate it.
After World War II, massive population growth, infrastructure construction, and the dispersal of economic activities to Manila's suburbs left the river neglected. The banks of the river attracted informal settlers and the remaining factories dumped their wastes into the river, making it effectively a huge sewer system. Industrialization had already polluted the river.[1]
In the 1930s, observers noticed the increasing pollution of the river, as fish migration from Laguna de Bay diminished. People ceased using the river's water for laundering in the 1960s, and ferry transport declined. By the 1970s, the river started to emanate offensive smells as a result of waste from swine and poultry establishments in the area where protected Marikina watershed is located (Pinugay, Baras, Rizal) and in the 1980s, fishing in the river was prohibited. By 1990, the Pasig River was considered biologically dead.[1][2]
In 2017, a study on river plastic emissions into the world’s oceans cited the Pasig River as the world’s eighth most polluting river in terms of unwanted micro and surface concentrations of plastic waste entering the marine environment.[3]
^ abPasig River Rehabilitation Program Archived 2007-10-12 at the Wayback Machine
^Baclig, Cristina Eloisa (2021-06-15). "Pasig River makes international waves despite being dead". Philippine Daily Inquirer. Retrieved 2023-10-05.
^Lebreton, Laurent (7 June 2017). "River plastic emissions to the world's oceans". Nature. 8: 15611. doi:10.1038/ncomms15611. PMC 5467230. PMID 28589961.
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