Name a country where tap water is safest to drink.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for a country where tap water is considered safe to drink. This implies we need to identify countries known for their high-quality drinking water.

2. **Identifying Safe Countries**: Research or recall information about countries that are known for having clean and safe tap water.

3. **Listing the Countries**: Based on the information, two countries are mentioned:
- Australia
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