component of swage of its impurities and its characteristics

Dear student
Sewage is characterised as the wastewater containing solid and liquid wastes and pollutants .It is produced by humans from homes, industries, hospitals, offices and other places that use water for their various processes.

Components of sewage water are:

• Organic wastes like human and animal faeces, urea (urine), pesticides, herbicides, fruit and vegetable waste, etc
• Inorganic wastes like nitrates, phosphates etc.
• Nutrients like phosphorus and nitrogen.
• Bacteria  and other microbes

Almost everything in sewage water ( above stated components ) act as impurities.

Hope this helps!
Regards