How does household detergents and sewage lead to water pollution?

Explanation

### Step-by-Step Solution:

1. **Introduction to Water Pollution**: Water pollution refers to the contamination of water bodies, such as rivers, lakes, and oceans, which can harm aquatic life and disrupt ecosystems.

2. **Sources of Water Pollution**: Household detergents and sewage are common sources of water pollution. They often contain harmful chemicals, including phosphates.

3. **Role of Phosphates**: Phosphates are nutrients that, when introduced into water bodies, can lead to nutrient pollution. This is primarily due to their presence in many household detergents and in untreated sewage.

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