Iron is one of the most common minerals in the world and it’s also found in water. Iron can cause staining and bad taste from tap water or well water that has high iron content.
Iron can form in different states. It can come in the form of ferrous ferrous iron (Fe++), which reacts with oxygen to form ferric iron (Fe+++). Ferric iron cannot dissolve into the water so the next step of oxidation releases two hydroxyl ions per one Fe++, turning insoluble ferric iron back into soluble ferrous ions. This process creates hydrogen gas bubbles as part of what we call “rusting”. And these bubbles can give off an unpleasant odor when they release through drinking faucets or clothes washers.
Organic iron comes from the breakdown of organic matter in water, such as decaying leaves and animal waste. This iron is considered non-toxic but it does not dissolve well so it often forms black particles that can clog a filter cartridge or other parts.
If you have iron in your drinking water, it’s probably causing some kind of negative impacts on your health. So that’s why you’re considering an iron filter for your well water.