Which of the following is NOT a method to clean faucet water?

• A. Distillation
• B. Reverse osmosis
• C. Britta
• D. Carbon filter

Answer: (C)

When you evaluate faucet water purification, focus on the processes used to remove contaminants. Distillation cleans water by boiling and recondensing, which separates water from most impurities. Reverse osmosis pushes water through a semipermeable membrane, removing dissolved salts and many contaminants. A carbon filter uses activated carbon to adsorb chlorine, tastes, odors, and some organics, improving flavor and reducing certain substances.

Brita refers to a brand of filtration devices that employ carbon filtration (and sometimes other media). It’s a product implementation, not a distinct purification process like distillation, reverse osmosis, or carbon filtration itself. So the option that isn’t a standalone method is the Brita filter.