During the conversion of surface water to potable water, chlorination is an important step. Give reasons.

Explanation

**Step-by-Step Solution:**

1. **Understanding Potable Water**:
- Potable water is defined as water that is safe and suitable for drinking. It must be free from harmful contaminants and pathogens that can cause diseases.

2. **Importance of Chlorination**:
- Chlorination is a key process in the treatment of surface water to make it potable. This process involves adding chlorine to the water.

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