Point-of-use activated carbon filters are most effective for removing _________.

• A. inorganic chemicals
• B. radon
• C. synthetic organic chemicals
• D. tastes and odors

Answer: (A)

Activated carbon works by adsorbing compounds onto its surface, which makes it especially good at removing substances that affect taste, odor, and color in water. Point-of-use carbon filters are designed to target the small organic molecules and chlorine by-products that cause off flavors and smells, so they consistently improve taste and odor. They can remove some synthetic organic chemicals as well, but they are not reliable for most inorganic chemicals or for gases like radon, which typically require other treatment methods. So the most reliable and common benefit of these filters is the improvement of tastes and odors, which is why that outcome is the best match for what these filters are designed to do.