Same-day & emergency service available · Serving Minneapolis–St. Paul

Loon Plumbing

Water Filtration & Conditioning in Minneapolis – St. Paul Metro Area

Free estimates · Softeners, iron filters & whole-home systems

Much of the metro runs on some of the hardest water in the country. The right system ends the scale, stains, smells, and swimming-pool taste for good — matched to what's actually in your water, at a price you approve first.

  • 5.0 on Google
  • MN License PM652496
  • Family-owned
An under-sink water filtration system
Stock photo · Fanti Salms, CC BY-SA 4.0, via Wikimedia Commons

How it works

What every water quality visit includes

  1. Test what's actually in your water

    Hardness, iron, chlorine, taste, smell — measured at your tap, with the numbers shown to you. The fix targets your water, not a brochure.

  2. A written price you approve

    One flat-rate number covering the equipment, install, and any permit. It doesn't change after you say yes.

  3. The right system, sized right

    Softener, iron filter, carbon, reverse osmosis — or a combination. Sized to your household and plumbed to Minnesota code, with no oversized gear you don't need.

  4. Proven at the tap

    We commission the system, retest the water, and you see the before-and-after numbers side by side before we go.

  5. A simple upkeep plan

    Salt schedule, filter-change dates, what to keep an eye on — written down, so the system keeps earning its keep for years.

And if something's not right after we leave? We come back and make it right — no charge, no argument. That's the Loon Promise.

Warning signs

What your water has been trying to tell you

White crust on faucets and showerheads

That's scale — dissolved calcium and magnesium coming out of solution wherever water dries. What you can see on the chrome is also building up inside your pipes, water heater, and appliances, where you can't scrub it off.

Orange or rust-colored stains in tubs, toilets, and laundry

Iron. Very common in metro suburbs on groundwater, and even small amounts stain everything they touch. A softener alone often can't keep up with it — this is where a dedicated iron filter earns its place.

A rotten-egg smell from your water

Usually hydrogen sulfide gas, sometimes created by the reaction between your water and the water heater's anode rod. The fix depends on the source — which is exactly why we test before we recommend.

Dry skin, stiff laundry, spotted dishes

The everyday hard-water tax. Soap doesn't lather right in hard water, so you use more of it and rinse less of it away. This is the complaint softeners were invented for.

Water tastes or smells like a swimming pool

Chlorine and chloramine from municipal treatment. It's safe, but you don't have to drink it — carbon filtration removes the taste at the tap or for the whole house.

Appliances keep dying young

Water heaters, dishwashers, coffee makers — scale kills them quietly and early. If your water heater sounds like popcorn, hard water is why. Conditioning the water protects everything downstream of it.

Honest options

Softener, filtration, or both? Here's how we decide

When a softener is the whole answer

Classic hard-water complaints — scale on fixtures, spotted dishes, dry skin, appliances wearing out early — and a test that shows high hardness but clean water otherwise. One properly sized softener fixes all of it. We won't stack equipment on top of a problem one tank solves.

When filtration earns its place

Iron staining, sulfur smell, chlorine taste, or drinking-water concerns like lead or PFAS. Those aren't hardness problems, and a softener won't fix them — that's iron filters, carbon, or reverse osmosis at the tap. The test tells us which, and you see the numbers before you spend a dollar.

Either way, you get the reasoning, not a sales pitch — and time to decide. Nobody here is in a hurry to upsell you.

Upfront pricing

You'll know the exact price before we start

"What does a water softener cost?" deserves a straight answer. The honest one: it depends on your water chemistry, household size, and how your plumbing is laid out — which is why we test and quote your house, not an average. You approve a flat-rate price covering the equipment, install, and haul-away of any old unit, and the invoice matches the quote. Always.

From our neighbors

5.0 on Google

“Great experience with Loon Plumbing. They helped with both our water heater and water softener and made the whole process easy from start to finish. Professional, knowledgeable, and easy to work with. If you’re in Edina and need plumbing work done, I’d definitely recommend giving Loon Plumbing a call.”

— Keenan K. · Water heater installation, via Google

Good to know

Water quality questions, answered straight

Is Minneapolis–St. Paul Metro Area water really that hard?

It depends on where you live, and the difference is bigger than most people think. Minneapolis and St. Paul soften their river water at the plant, so city taps run moderate. Most suburbs pump groundwater instead — and that often runs 15 to 25+ grains per gallon, some of the hardest water in the country. We test at your tap rather than guess from a map.

What's the difference between a softener and a filter?

A softener removes hardness minerals (calcium and magnesium) by ion exchange — that's the fix for scale, spots, and dry skin. Filters remove other things: iron, chlorine taste, smells, sediment, or contaminants at the drinking tap. Many homes need one, some need both, and the test tells us which.

I'm in Minneapolis proper — do I even need a softener?

Honestly? Maybe not. City water is pre-softened to a moderate level, and plenty of Minneapolis homeowners live happily without one. Some still add a softener to protect scale-sensitive appliances or for the soft-water feel. If a test says your water is fine, we'll tell you that and shake your hand.

What about salt-free 'water conditioners'?

Salt-free descalers exist and have their fans, but for genuinely hard water, salt-based ion exchange is the proven fix — it's the only approach that actually removes hardness rather than trying to manage it. We'll give you the straight version of that conversation, not the one that ends in whatever's on the truck.

Should I be thinking about PFAS or drinking-water filtration?

If you're in the east metro, you already know the history there. For drinking-water concerns — PFAS, lead, taste — an under-sink reverse osmosis system with the right membrane and carbon stages is the standard, effective approach, and far more economical than treating the whole house. We'll help you match the fix to the actual concern.

How long does installation take?

Most softener and filter installs are done in half a day, including plumbing the bypass, programming the system, and testing at the tap. Whole-home combinations can take a full day. Either way you approve the flat-rate price first, and we haul away any old equipment.

White spots on my dishes and crust on the faucets — is that a softener problem?

That's hard water — calcium and magnesium drying onto every surface it touches. A properly sized softener ends it, and the difference shows up in the first week: clear glassware, no scale, soap that actually lathers. We size it to your bathrooms and your actual test number, not a guess.

My water smells like rotten eggs.

If it's only the hot water, it's your water heater, not your supply. If it's both taps, it's sulfur in the water itself — common on wells. Different causes, different fixes, and we can tell which in one visit. Neither is something you should have to live with.

Orange or rust-colored stains in the tub and toilet.

Iron. Very common on well water and in some city systems. A softener alone catches only the dissolved form; the rest needs an iron filter matched to what's actually in your water. We test first so the equipment fits the problem.

My softener is 15 years old and still cycles. Should I replace it?

Cycling and using salt doesn't mean it's softening. Resin beds wear out quietly and let hardness through. A quick hardness test on your softened water settles it in minutes — and if it's still doing its job, we'll tell you to keep it.

Do you test the water before recommending anything?

Always. We run a free in-home test — hardness, iron, chlorine, pH, and dissolved solids — at your kitchen sink before anything gets quoted. If the honest answer is that you don't need anything, that's what you'll hear. Want a head start? The free Loon WaterIQ report at loonplumbing.com/water-check builds a report from your city's own water data in about two minutes.

Learn more

Understand what's in your water

Plain-English guides to the issues we test for — what each one is, why it matters, and how it's fixed:

Request service

Tell us about your water

Send the form and we'll call you back — usually within the hour during business hours. In a hurry or standing in water? Skip the form:

(612) 445-6346

Same-day & emergency service available.

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