Chlorination (noun)

The process of adding chlorine to water to make it safe to drink.

Origin:

From the chemical element chlorine.

Examples:

1. The chlorination process was completed and the water was safe to drink.
2. The swimming pool is treated by chlorination to keep it clean.
3. Chlorination is an effective way to disinfect water.
4. The city's water supply underwent chlorination to remove harmful bacteria.
5. The water was tested for chlorine levels after the chlorination process.