NCERT Solutions for Class 7 Science Chapter 18: Wastewater Story

NCERT Solutions for Class 7 Science Chapter 18 Wastewater Story is covered in the article. The important topics that are included in this chapter are What Is Sewage?, Wastewater Treatment Plant, Better Housekeeping Practices, Sanitation and Disease, and Alternative Arrangement for Sewage Disposal.

Download PDF: NCERT Solutions for Class 7 Science Chapter 18 Wastewater Story 

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NCERT Solutions for Class 7 Science Chapter 18

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NCERT Solutions for Class 7 Science Chapter 18 – Important Points

Water is an important resource not just for humans but for all the organisms on earth. Therefore, contaminating this natural resource has dire consequences.

• The main reasons for water pollution are our commercial and industrial activities.
• All the waste effluents that reach water bodies result in water pollution. In the long run, this can cause many diseases and health hazards for us.
• Sewage can be defined as a type of wastewater that is produced by a community of people, which is typically transported through a sewer system.
• Sewage includes wastewater discharged from residences and from commercial, institutional, and public facilities that exist in the locality.
• Wastewater treatment plants are large plants where wastewater is cleaned before being sent to the nearest water bodies or being reused.
• The sewage treatment consists of physical, chemical, and biological processes to remove impurities from the wastewater.

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