Fill in the following blank with suitable words:
Cleaning of water is a process of removing…………………

Answer

To fill in the blank in the statement "Cleaning of water is a process of removing __________," we need to identify what is typically removed during the cleaning process of water, especially in the context of wastewater.

### Step-by-Step Solution:

1. **Understanding the Context**: The question refers to the cleaning of water, specifically wastewater. Wastewater is the water that has been used and contains various impurities.

2. **Identifying Impurities**: When water is used in households, schools, hospitals, and industries, it collects various substances. These include dirt, chemicals, bacteria, and other harmful pathogens.

3. **Recognizing the Need for Cleaning**: Wastewater cannot be released directly into natural water bodies like seas and oceans because it contains these harmful substances. Therefore, it must be treated to remove these impurities.

4. **Defining the Purpose of Cleaning**: The main goal of cleaning water is to eliminate these harmful substances to make the water safe for discharge or reuse.

5. **Conclusion**: The substances that are removed during the cleaning process are known as pollutants. Therefore, the appropriate word to fill in the blank is "pollutants."

### Final Answer:
Cleaning of water is a process of removing **pollutants**.

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