Question

what are the pollutants present in the city sewage

Answer 1

1) pollutant in the ocean is sewage. Human sewage largely consists of excrement from toilet-flushing; wastewater from bathing, laundry, and dishwashing 2) The major types of ocean pollutants from industrial sources can be generally categorized as petroleum, hazardous, thermal, and radioactive. Petroleum products are oil and oil-derived chemicals used for fuel, manufacturing, plastics-making, and many other purposes. Hazardous wastes are chemicals that are toxic .3)Sewage originates primarily from domestic, commercial, and industrial sources. In many developed countries, these wastes typically are delivered either to on-site septic systems 

Answer 2

Pollutants present in city sewage are  microorganisms, phosphorus and nitrogen, hydrocarbons, organic matter. The majority of water related  These pollutants cause infections, such as cholera, typhoid fever, diarrheoriya