sewage effecting which direct go to divers is in minimum discharge increase the salinity (EC and TDS) but through increasing discharge will it move the bed of rivers that cause of sediment sewage in bed which it pollutes the river water
Sewage when discharged to rivers without proper treatment will result in anaerobic conditions in the river resulting in death of aquatic plants and animals. This therefore affects the prey-predator ratio in the river.
Most sewage pollution comes from just a few locations around the world. Researchers analysed faecal pathogens and nitrogen from human wastewater entering the ocean at nearly 135,000 sites. They found that 25 watersheds contribute almost half of the nitrogen, with the Yangtze River expelling the most — 11% of all global nitrogen from human waste. The Nile, the Mississippi and the Danube also rank among the highest emitters. The results could help conservationists and sanitation specialists to pinpoint where sewage treatment can make the biggest impact...