35. NCERT Exemplar XXII

 

WastewaterLakewaterRainwater that flows down the drains in homes, businesses, fields, hospitals, and other places is called sewage. During storms or times of heavy rain, rainwater that runs off the streets adds to the sewagesludgewaste. This is due to the rainwater falls on rooftops and roads and carries non-toxicharmlesstoxic substances. Pollutants that are suspended and dissolved that are present in sewage are called sewerssewagecontaminants. They include organic and inorganic impurities, nutrients, disease-causing bacteria, and other microbes. These contaminants can pose significant health and environmental risks. For instance, disease-causing bacteria can lead to waterborne illnesses, while excessive nutrients in sewage can cause water pollution and harm aquatic life.

 

The systems of pipes that carry sewage are known as sewagescontaminantssewers.

 

Sewers are underground, pipes that carry waste materials and drainage water. Sewers are connected to each other to form a network called a waste systemsewerage system drainage system.