Name the two different categories of microbes naturally occurring in sewage water. Explain their role in cleaning sewage water into usable water.

Explanation

### Step-by-Step Solution:

1. **Identify the Categories of Microbes**:
The two different categories of microbes that naturally occur in sewage water are:
- **Aerobic Bacteria**
- **Anaerobic Bacteria**
- **Fungi** (often associated with aerobic bacteria)

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