Let’s be real: those cute filter pitchers were designed for tap water that’s mostly fine. They use activated carbon, which is like trying to catch a mosquito with a beach net. Nitrates are tiny molecules, and carbon cannot trap them. So unless your water filter comes with a Reverse Osmosis membrane or anion resin, it’s just an expensive water-bottling device.
Crystal Quest Refrigerator Water Filter | Nitrate Removal – Water