Best Water Filter for Nitratesの概要と注目ポイントを徹底的にカバーしました。

First, get a water test kit from a hardware store or lab—you can’t fight an enemy you can’t see. If your nitrate level is above 10 mg/L, a countertop RO system is usually the easiest, budget-friendly choice (~$150–$300). Need whole-house protection? Go for a big anion exchange system (call a plumber for that one). If you’re worried about plastic waste, look for systems with reusable or metal housings.