Iron filter reviews ranked by PPM capacity, flow rate, and long-term reliability.
Air injection oxidation — iron, sulfur, manganese
For iron above 7 PPM, look at heavy-duty katalox-media systems (SoftPro Iron Master handles up to 30 PPM). For iron below 3 PPM without sulfur, the Fleck 5600SXT softener handles incidental iron removal without a dedicated iron filter.
| Springwell WF1 | Up to 7 PPM iron, 8 PPM H2S, 1 PPM manganese. Air injection. 12–20 GPM. |
| Fleck 5600SXT softener | Up to 3 PPM iron (incidental). 48K–80K grain. |
| SoftPro Iron Master | Up to 30 PPM iron. Katalox media. For extreme iron. |
| Peroxide injection system | Unlimited iron levels. Chemical treatment. Professional install. |