Questions like what does a water softener do and “what does a water softener remove” are more common than you think, and they’re the right ones to ask. Many Mid-Missouri families are surprised to learn that while softeners can dramatically improve water quality, they don’t solve every issue. That’s where we come in.At Mid-Mo Water Solutions, we help homeowners in Jefferson City, Columbia, and surrounding areas understand what’s really in their water, and how to treat it effectively.

Let’s clear up the confusion and break down exactly what a water softener removes… and what it doesn’t.

Quick Answer: What Does a Water Softener Remove?

A water softener removes hard water minerals like calcium and magnesium—and in some cases, small amounts of iron. But it does not remove chlorine, bacteria, fluoride, lead, or other chemical contaminants. For that, you’ll need an additional filtration system.

What Does a Water Softener Do?

Water softeners are designed to address hard water, which is water that contains high levels of calcium and magnesium. These minerals aren’t dangerous to your health, but they can wreak havoc on your plumbing, appliances, skin, and even your laundry.

So how does a softener work? Through a process called ion exchange, a softener replaces hard minerals like calcium and magnesium with sodium or potassium ions. This results in what’s often called soft water.

But it’s important to remember: a soft water conditioner is not a comprehensive filter. It’s focused on removing minerals, not contaminants like chlorine, bacteria, or heavy metals.

What Water Softeners DO Remove

Let’s start with the good news. A standard water softener can effectively remove:

  • Calcium
  • Magnesium
  • Iron (in small amounts, depending on system)

These are the minerals responsible for limescale buildup, clogged pipes, and poor soap lathering. If your shower doors have white spots or your dishwasher leaves residue, a softener can help significantly.

➡️ Want to know how soft water can save you money on repairs and energy bills? Check out our blog on 3 Ways a Water Softener Can Save You Money.

What They DON’T Remove (and Why It Matters)

This is where many homeowners get tripped up. A softener is not a one-size-fits-all water treatment solution. It does not remove:

  • Chlorine
  • Fluoride
  • Lead
  • Bacteria or viruses
  • Pesticides or VOCs
  • Most heavy metals

If you’re concerned about these contaminants, you’ll need additional filtration. We often hear questions like, “Does a water softener remove heavy metals?” The answer: not reliably.

➡️ For chlorine concerns specifically, read our blog: Does a Water Softener Remove Chlorine?

What About Iron and Heavy Metals?

Iron is tricky. Some water softeners can remove small amounts of ferrous (clear water) iron, but not all forms of iron or manganese. And if your home has high iron levels, a softener may not cut it.

More importantly, softeners cannot remove dangerous heavy metals like:

  • Lead
  • Arsenic
  • Mercury

If these are present in your water source, a softener won’t protect your health. In this case, a comprehensive water filtration system is essential.

➡️ Not sure if you need a softener, filter, or both? Check out our blog: Do You Need a Water Softener?

Do You Need Additional Filtration?

If your water contains chlorine, sulfur, sediment, or other problem contaminants, a water softener alone won’t solve the issue. That’s why Mid-Mo Water Solutions also offers advanced filtration systems like:

These systems pair perfectly with softeners to provide clean, great-tasting, and safe water throughout your home.

🎯 We specialize in water treatment in Columbia, MO and surrounding areas, ask us about the right setup for your home.

Is Softened Water Safe to Drink?

Yes, for most people, softened water is safe to drink. The added sodium from ion exchange is minimal (typically under 50 mg per liter), much less than what’s in a slice of bread. However, if you’re on a sodium-restricted diet, a reverse osmosis system may be recommended for your drinking water.

As for taste? That’s subjective. Some people notice a slight difference, while others love the feel of soft water.

FAQ – Common Questions Answered

Why is soft water not suitable for drinking?

It’s mostly a myth. Unless you’re on a low-sodium diet, soft water is perfectly safe to drink.

What’s the benefit of pairing a filtering solution with your water softener?

You’ll eliminate hard water and remove problem contaminants like chlorine, sulfur, and sediment. Systems like the IonX5 and TwistPro RO give your home cleaner, better-tasting, safer water.

Do water softeners remove heavy metals?

Water softeners aren’t designed to remove heavy metals like lead or arsenic, but you can pair your system with a dedicated filtration solution to handle those contaminants and protect your water quality.

How much does a water softener remove?

It removes nearly all calcium and magnesium, plus some iron, but not chlorine or bacteria.

Does a water softener remove all hard water?

It removes most hardness-causing minerals, but extreme levels may require a custom system.

Final Thoughts

So… what is removed in a water softener? The short answer: hard minerals like calcium and magnesium, plus some iron. Water filtration systems help remove other contaminants, and knowing the difference is key to protecting your home and health.

If you’re unsure what’s in your water, the best first step is a free water test.

Get a Free Water Test from Mid-Mo Water Solutions

At Mid-Mo Water Solutions, we help families across Jefferson City, Columbia, and surrounding communities get the clean, soft water they deserve. We’ll test your water so you know exactly what’s in it, recommend the best solution for your home, and provide expert installation with ongoing support. Call us today at (573) 636-3800 or schedule your free water test online to get started.