Water pollution arises from various sources, each contributing significantly to the degradation of marine environments. Sewage and wastewater disposal into oceans is a critical issue, introducing harmful contaminants.
Lastly, eutrophication greatly disrupts marine environments. Fertilizer running off into nearby water sources often causes this problem and it results in algal blooms. The increased amount of algae uses up all of the oxygen in the water, killing off other species.
radioactive waste dumping
Global warming
Oil pollution
Another major source of water contamination is oil pollution. This can occur in a variety of ways, such as spills, shipping, run-off, and dumps. Oil spills are considered the most detrimental because such a large amount is concentrated in one place.
sewage and wastewater dumping
The disposal of Sewage and wastewater into marine enviroment is a significant sactor in water pollution
Marine dumping
Marine dumping is another major cause of water pollution. This practice can be both controlled and uncontrolled. Sources of marine dumping include garbage, debris from construction sites, waste chemicals, and bilge water. Different materials vary in the length of time they need to degrade; cardboard takes just two weeks while plastic remains for 400 years
atmospheric deposition
Atmospheric deposition, specifically acid rain, is another significant cause of water pollution. This is caused by an increased amount of various pollutants in the atmosphere that are leached out in the form of rain. Acid rain results in an overall reduction in biodiversity.