Is hard water (particularly with Iron) safe for consumption?

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Moving in with my girlfriend in Indiana soon and she told me the water there has iron in it and will make you shit. I don't wanna rely on bottled water and I am interested how bad iron being in the water is for your health, and if there are good ways to filter the iron. I've looked up multiple filtration methods but figured I wanted to ask some anons here first. Also, I am unsure how much iron is in the water.
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