With as little as 0.3 parts per million, your water will have a brown iron stain. Most water softeners are rated to remove only one ppm (one part per million) or 1 mg/L. However, most regions in the U.S. have higher amounts of iron than that. The water sources in some U.S. states have iron content up to 20 ppm.
Will an iron filter soften water?
A filter designed to specifically treat iron will allow your water softening system to do what it does best—provide your home with continuously softened water.Oct 10, 2019
What goes first iron filter or water softener?
Typical iron filters use such media a Birm and Filox. They do not treat hardness (excess calcium and magnesium), so you may need both a softener and an iron filter if you have hard water with some iron in it. If you use both an iron filter and a softener, the iron filter goes first.