Water pollution is caused due to

Options

A. Sewage and other wastes
B. Industrial effluents
C. Agricultural discharges
D. All of these

Explanation

**Step-by-Step Solution:**

1. **Identify the Sources of Water Pollution**:
Water pollution can arise from various sources, primarily categorized into industrial, domestic, and agricultural activities.

2. **Industrial Effluents**:
- Industrial processes often release toxic substances into water bodies.
- These include heavy metals (like lead, mercury, cadmium) and organic waste, which can severely contaminate water.

3. **Domestic Sewage**:
- Domestic waste, including sewage from homes and hospitals, contributes significantly to water pollution.
- Sewage contains organic waste and untreated pathogens, which can lead to serious health issues such as dysentery, typhoid, jaundice, and cholera.

4. **Agricultural Runoff**:
- Agricultural activities introduce various pollutants into water bodies.
- The use of fertilizers, pesticides, and insecticides can lead to nutrient pollution and toxic contamination of water sources.

5. **Conclusion**:
- All these factors—industrial effluents, domestic sewage, and agricultural runoff—are major contributors to water pollution.
- Therefore, the correct answer to the question is that water pollution is caused due to all of these sources.

**Final Answer**: Water pollution is caused due to industrial effluents, domestic sewage, and agricultural runoff.

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