If your tap water comes from a well, you’ve got a different story. Well water often contains iron, sulfur, or manganese—nasties that can ruin a softener’s day. In that case, you might need a specialized filter before the softener to trap those big particles.
Think of it as putting a doormat outside before the bouncer. The mat (filter) catches the mud and sand, so the bouncer (softener) doesn’t get dirty boots on his nice floor. Most city homes don’t need this extra step, but if you live out in the sticks, it’s worth checking your water report.
What about “all-in-one” systems?
Some companies sell combo units that soften and filter in one box. They’re convenient, like a Swiss Army knife, but they’re not always the best for every home. A separate softener and filter give you more control and easier maintenance.
Ask yourself: do you want a gadget that does two things okay, or two gadgets that each do one thing really well? I vote for the latter, but you do you.
Water Softener After Filter at Steven Mix blog
