Well water is considered to be safer for consumption than river water. Give reason

Explanation

**Step-by-Step Solution:**

1. **Understanding the Source of Well Water:**
- Well water is sourced from underground water tables. When we dig a well, we reach the water that has seeped down through various layers of soil and rock.

2. **Natural Filtration Process:**
- As the water moves through layers of sand, gravel, and other materials in the earth, it undergoes a natural filtration process. This process helps to remove impurities.

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