The removal of germs from water is called ______

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term used to describe the removal of germs from water.

2. **Identifying the Process**: The process of removing germs from water is known as "sterilization."

3. **Exploring Methods of Sterilization**: There are several methods to sterilize water:
- **Using Bleaching Powder**: This is a chemical method where bleaching powder (calcium oxychloride, Ca(OCl)₂) is added to water to kill germs.
- **Boiling**: This is a physical method where water is heated to its boiling point, which kills most germs.
- **Ozonization**: This method uses ozone gas to disinfect water and remove germs.

4. **Conclusion**: The term that describes the removal of germs from water is "sterilization."

**Final Answer**: The removal of germs from water is called **sterilization**.

---