Do you treat well water outside Saint Paul?

Yes. We're based in Saint Paul and we build and install well water treatment systems for homeowners across the Twin Cities metro — east, north, south, and west. If you're on a private well nearby, call and we'll come test it.

How much does a well water treatment system cost?

It's quoted per home, because no two wells test the same. A softener-only job and a full iron, manganese, and UV build are very different systems. You get a written quote within 24 hours of the water test, at no cost and with no pressure.

How do I know what's actually in my well water?

We test it for free. Stains, smells, and scale narrow it down fast, but the design comes off real numbers — hardness, iron, manganese, pH, hydrogen sulfide, tannins, and TDS on site, with lab work for bacteria, nitrate, arsenic, or PFAS when it's warranted.

Can one system fix the rust stains, the smell, and the hard water at once?

Yes — that's what a custom-built system is for. The stages run in order: sediment first, then oxidation for iron, manganese, and sulfur, then softening, then polishing, with UV or reverse osmosis added when your test says you need them.

I'm in the east metro. Should I worry about PFAS?

It's worth checking. The Minnesota Department of Health has tested and issued advisories for private wells in parts of Washington County. We can help you find out whether your area is affected and test your water if it hasn't been.

Is my well water tested by anyone else?

Generally no. Private wells aren't regulated the way city water is, so it's up to the homeowner. The Minnesota Department of Health recommends testing for coliform bacteria every year, nitrate every two years, and arsenic, lead, and manganese at least once.

How often does a well system need service?

Salt gets topped up every month or two, UV lamps are replaced annually, sediment cartridges change on a schedule set by your water, and filter media typically runs years before it needs swapping. We'll tell you the schedule for your build up front.

Well water treatment

Well water systems, built for your well.

Fresh Water Pros designs and installs custom well water treatment systems for homeowners across the Twin Cities. Hard water, rust stains, black specks, rotten egg smell, arsenic, PFAS, sand, tannins, bacteria — every one of them has a different cause and a different fix. We test your water first, then build the plan around what's actually in it. No two wells get the same system.

Get a free well water test Call 651 373 6437

Common well water problems

What's wrong with your well water.

These are the problems Minnesota well owners call us about. Find yours below — the stains, smells, and tastes tell you a lot before we ever run a test.

Very hard water & scale

What you notice: Soap that won't lather, spots and film on glassware, crusty white buildup on faucets and shower heads, stiff laundry, itchy skin, and water heaters that die years early.
What's causing it: Dissolved calcium and magnesium. Minnesota's glacial and limestone aquifers produce some of the hardest well water in the country, and the minerals plate out on everything they touch.
How we treat it: An ion-exchange softener sized to your grains-per-gallon hardness and household size, set to regenerate on demand instead of on a timer so you aren't wasting salt or water.

Rust & orange stains

What you notice: Orange-brown rings in the toilet, rust stains on tubs, sinks, and white laundry, and water that turns cloudy-orange after it sits in a glass.
What's causing it: Dissolved and oxidized iron, which is common in Minnesota groundwater. It stains long before it tastes like anything.
How we treat it: An air-injection oxidizing iron filter sized to your measured iron level, usually paired with a softener to catch what the filter leaves behind.

Manganese, black specks & gray staining

What you notice: Black or dark brown specks in ice cubes and faucet aerators, gray-black stains in toilets and the dishwasher, and a bitter metallic aftertaste.
What's causing it: Manganese, which travels with iron in a lot of Minnesota wells. The Minnesota Department of Health has health-based guidance for it — especially for infants — so it's about more than stains.
How we treat it: Oxidizing filtration media rated for manganese, followed by softening to polish out the remainder, with reverse osmosis at the tap when a baby is in the house.

Rotten egg & sulfur smell

What you notice: Water that smells like rotten eggs or a struck match — often worse on the hot side, in the shower, or first thing after the well has sat overnight.
What's causing it: Hydrogen sulfide gas dissolved in the water, or sulfur-reducing bacteria living in the well and the water heater.
How we treat it: Air-injection oxidation followed by catalytic carbon. When the source is bacterial, we shock chlorinate the well and swap the heater's anode rod.

Arsenic

What you notice: Invisible. No taste, no smell, no stain — it's found by lab testing and nothing else.
What's causing it: Naturally occurring arsenic released from glacial deposits. It turns up in a meaningful share of new Minnesota wells, which is why state health guidance is to test every well for it at least once.
How we treat it: Targeted adsorptive media for the whole house or reverse osmosis for drinking water, specified from your lab results rather than a guess.

PFAS ("forever chemicals")

What you notice: Nothing you can see, smell, or taste. PFAS only show up on a lab test.
What's causing it: Synthetic chemicals from past industrial waste disposal have reached groundwater in parts of the east metro, including Washington County. The Minnesota Department of Health has issued well advisories in affected areas.
How we treat it: Granular activated carbon sized for PFAS, or reverse osmosis at the tap, chosen from your test results and any MDH guidance for your address.

Sand, grit & cloudy water

What you notice: Grit in aerators and toilet tanks, cloudy or milky water at the tap, fixtures that clog, and a well pump that runs harder than it should.
What's causing it: Sediment, silt, and turbidity coming off the well casing, the aquifer, or a screen and pump that are starting to fail.
How we treat it: A spin-down separator plus staged sediment filtration ahead of everything else, so the expensive media downstream doesn't get fouled.

Yellow or tea-colored water

What you notice: Water tinted yellow, amber, or tea-colored even when it's clear, an earthy or musty taste, and whites that come out of the wash dingy.
What's causing it: Tannins — organic matter leached from decaying vegetation. Common near lakes, wetlands, and peat, which Minnesota has plenty of.
How we treat it: Tannin-selective resin, usually staged after softening, with a carbon pass for the taste and odor that ride along with it.

Bacteria, coliform & E. coli

What you notice: A failed coliform test, stomach illness in the house, or a well that was flooded, cracked, or left uncapped.
What's causing it: Total coliform, E. coli, or iron and sulfur bacteria entering through a compromised well cap, casing, or a septic system too close by — spring snowmelt and flooding raise the risk.
How we treat it: Shock chlorination of the well, then a UV disinfection system sized to your flow rate and installed downstream of filtration so the lamp stays effective.

Nitrates & nitrites

What you notice: Nothing at all. Nitrate has no taste, color, or smell — it only shows up on a test, and it matters most for infants and during pregnancy.
What's causing it: Fertilizer, livestock, and septic runoff working down into shallow wells. A genuine risk in agricultural areas and where sandy soils let water drain fast.
How we treat it: Anion-exchange treatment for the whole house or reverse osmosis at the tap, chosen off your lab numbers rather than a guess.

Metallic, salty or flat taste

What you notice: Water that tastes metallic, earthy, or just flat. Coffee and ice taste wrong, and the family quietly switches to bottled water at home.
What's causing it: High total dissolved solids and trace minerals that whole-home filtration reduces but doesn't take all the way to drinking-water polish.
How we treat it: A tankless reverse osmosis system at the kitchen sink, with remineralization so the water tastes like something you want to drink.

Seeing something that isn't on this list? Call 651 373 6437. Odd tastes, sudden changes after snowmelt or heavy rain, and pressure that drops off are all worth a test.

Custom system design

A plan built for your water, not a box off the shelf.

City water is roughly the same house to house. Well water isn't — two homes on the same road can test completely differently. That's why every well system we install starts with a test.

We test your water

On site, at your tap and at the well head: hardness, iron, manganese, pH, hydrogen sulfide, tannins, and total dissolved solids — plus lab work for bacteria, nitrate, arsenic, or PFAS when the numbers or your location call for it. Free, and no obligation.

We design the plan

No package pulled off the truck. Every stage is sized to your measured chemistry, your well's flow rate and pressure, your plumbing, and how many people live in the house. You see why each piece is there.

We install it

Most well systems go in inside a day, at the main line, by the same people who designed it. Licensed, insured, and cleaned up behind us.

We keep it running

Salt and media schedules, annual UV lamp changes, and a re-test so you can see the difference in numbers instead of taking our word for it.

Metro-wide

Well water treatment across the Twin Cities.

Our whole-home installs are centered on Saint Paul, but well work takes us across the metro — east, north, south, and west. If you're on a private well within reach of the Twin Cities, we'll come test it.

East Metro & St. Croix Valley

Woodbury, Oakdale, Lake Elmo, Stillwater, Cottage Grove, Afton, Hugo, Forest Lake, Scandia, Marine on St. Croix, Denmark Township

North Metro

White Bear Lake, Shoreview, Vadnais Heights, North Oaks, Lino Lakes, Blaine, Ham Lake, Andover, Anoka, Columbus

South Metro

Inver Grove Heights, Eagan, Apple Valley, Lakeville, Rosemount, Farmington, Hastings, Burnsville, Prior Lake

West Metro

Minnetonka, Plymouth, Maple Grove, Medina, Independence, Orono, Chanhassen, Victoria, Chaska, Waconia

On city water instead? See our whole-home filtration service areas.

Well water FAQ

Questions well owners ask.

Still not sure what your well needs? The test is free and the quote comes back within 24 hours.

Call 651 373 6437

Free consultation

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