What Causes Iron in Water and How Is It Treated?

Iron is a common mineral found in many groundwater sources and private wells. As water moves through soil and rock, it can dissolve iron and carry it into your home’s water supply.

High iron content in Minnesota water may cause red, orange, or brown stains on sinks, tubs, toilets, and laundry. It can also create metallic tastes and cloudy water. Iron bacteria can grow, as well, which can produce slime that clogs pipes and faucet aerators.

Treatment depends on the type and amount of iron present. Iron comes in different forms, including ferric and ferrous iron. Both of these can leave behind stains that are extremely hard to remove and cause other issues. Common solutions include softeners for lower iron levels, air injection systems, specialty filters, or custom whole-home treatment systems.

One of the systems we offer is the EcoWater ECR 3502, which is rated to remove up to 15 ppm of clear water iron (ferrous iron). In most cases, our equipment can remove triple the iron compared to competitive brands.

If your water looks red when it runs out of the faucet, an ETF AII9 Air Injection filter ahead of a water softener can help treat the issue. In severe cases, a separate iron filter may be needed.