With reference to "Sanitation and Disease", consider the following statements: 1. Poor sanitation has no correlation with the quality of drinking water. 2. A large fraction of people defecate in the open, which is a health hazard. 3. Untreated human excreta is a cause of both soil and water pollution. Which of the statements given above is/are correct?

Correct Option The correct option is (c). Explanation Sanitation involves the provision of facilities and services for the safe disposal of human urine and feces. The management of sanitation is intrinsically linked to the quality of drinking water and the prevention of environmental pollution. Inadequate sanitation systems facilitate the transmission of pathogens and the contamination of natural resources. Statement-wise Analysis - Statement 1 is Incorrect. Poor sanitation has a direct and significant correlation with the quality of drinking water. Untreated sewage and open defecation often contaminate groundwater aquifers and surface water bodies, which are primary sources of drinking water. This contamination introduces pathogens causing diseases like cholera, typhoid, and dysentery. - Statement 2 is Correct. A significant portion of the population in developing regions continues to practice open defecation. This practice is a major health hazard as it exposes the community to fecal-oral transmission of diseases, vectors like flies, and environmental contamination. - Statement 3 is Correct. Untreated human excreta is a primary source of organic and biological pollution. When left untreated, it leaches into the soil, altering its composition and introducing harmful bacteria (Soil Pollution). Simultaneously, surface runoff carries this waste into water bodies, leading to eutrophication and pathogen spread (Water Pollution). Key Takeaway: Improper disposal of human excreta is a dual pollutant, affecting both soil integrity and water quality, thereby serving as a critical vector for waterborne diseases.

With reference to "Sanitation… - NCERT Class 7 Environment & Ecology MCQ

NCERT Class 7 Environment & Ecology — Chapter 2: Wastewater story

mcqmedium

With reference to "Sanitation and Disease", consider the following statements:

Poor sanitation has no correlation with the quality of drinking water.
A large fraction of people defecate in the open, which is a health hazard.
Untreated human excreta is a cause of both soil and water pollution.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT Science - class 7 · Page 162

Options

A1 and 2 only
B2 only
C2 and 3 only
D1, 2 and 3

Did you get this right?

Solution

Correct Option

The correct option is (c).

Explanation

Sanitation involves the provision of facilities and services for the safe disposal of human urine and feces. The management of sanitation is intrinsically linked to the quality of drinking water and the prevention of environmental pollution. Inadequate sanitation systems facilitate the transmission of pathogens and the contamination of natural resources.

Statement-wise Analysis

Statement 1 is Incorrect. Poor sanitation has a direct and significant correlation with the quality of drinking water. Untreated sewage and open defecation often contaminate groundwater aquifers and surface water bodies, which are primary sources of drinking water. This contamination introduces pathogens causing diseases like cholera, typhoid, and dysentery.
Statement 2 is Correct. A significant portion of the population in developing regions continues to practice open defecation. This practice is a major health hazard as it exposes the community to fecal-oral transmission of diseases, vectors like flies, and environmental contamination.
Statement 3 is Correct. Untreated human excreta is a primary source of organic and biological pollution. When left untreated, it leaches into the soil, altering its composition and introducing harmful bacteria (Soil Pollution). Simultaneously, surface runoff carries this waste into water bodies, leading to eutrophication and pathogen spread (Water Pollution).

Key Takeaway: Improper disposal of human excreta is a dual pollutant, affecting both soil integrity and water quality, thereby serving as a critical vector for waterborne diseases.

Your note

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