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Twin City
Water Problems
in MN

Common Water Quality Issues in Minnesota Homes

Water across the Twin Cities region can vary widely depending on source, treatment method, and local geology. Many homeowners experience taste, odor, staining, scale, and potential contaminant concerns that affect comfort, plumbing, appliances, and long-term water safety. Commers designs treatment systems based on measured conditions—not assumptions—so each problem is addressed at the source.

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Bad Taste & Odor

Chlorine and Sulfur (“Rotten Egg” Smell)

Municipal water often contains chlorine or chloramines for disinfection, which can leave a noticeable chemical taste and odor. Private well systems may develop hydrogen sulfide or sulfur bacteria, producing the familiar rotten egg smell. These issues can affect drinking water, bathing comfort, and even indoor air during showers.

Hard Water & Scale Buildup

Hard water is common throughout Minnesota and causes:

  • White scale on faucets, fixtures, and shower glass
  • Reduced soap and detergent performance
  • Shortened life of water heaters, dishwashers, and washing machines
  • Increased energy use due to mineral insulation on heating elements

High Iron Levels

Iron in well water and some municipal sources can cause:

  • Red, orange, or brown staining on fixtures and laundry
  • Metallic taste in drinking water
  • Clogged plumbing and fouled softener media
  • Bacteria growth that creates slime in toilets and tanks

Both ferrous (clear-water) and ferric (red-water) iron require different treatment strategies.

Tannin & Colored Water

Organic tannins from decaying vegetation can cause:

  • Yellow or tea-colored water
  • Staining on sinks and tubs
  • Discoloration of laundry
  • Interference with disinfection and filtration processes

Sediment & Dirt

Sand, silt, clay, and rust particles can enter water lines and cause:

  • Cloudy water
  • Abrasive wear on valves and appliances
  • Plugged faucets and shower heads
  • Reduced performance of RO membranes and softeners

Chemicals, VOCs & Agricultural Runoff

Groundwater and surface water may contain:

  • Herbicides and pesticides
  • Volatile Organic Compounds (VOCs)
  • Industrial solvents and fuel byproducts

These compounds can affect taste, odor, and long-term exposure risk.

PFAS & Microplastics

Per- and polyfluoroalkyl substances (PFAS) and microscopic plastic particles are emerging concerns in many Minnesota water sources. These contaminants are persistent, difficult to remove, and require advanced carbon and membrane-based treatment.

Heavy Metals & Bacteria

Depending on plumbing materials and aquifer conditions, water may contain:

  • Lead, copper, arsenic, manganese, or other metals
  • Coliform bacteria or iron bacteria
  • Elevated Total Dissolved Solids (TDS) affecting taste and scaling

Whole House Water Refiner

One System for Multiple Twin Cities Water Problems

The Commers Whole House Water Refiner is designed to treat the most common Minnesota water issues at the point of entry. It delivers soft, conditioned water while reducing chlorine, iron, and many chemical contaminants—protecting plumbing, appliances, and water quality at every tap.

What it helps address:

  • Hard water scale and mineral buildup
  • Chlorine taste and odor
  • Iron staining
  • Herbicides, pesticides, and VOCs
  • PFAS/PFCs and disinfection byproducts
  • Sulfur-related taste and odor issues

Key performance features:

  • Counter-current regeneration for higher efficiency and consistent softening
  • High-flow 1″ control valve to maintain household water pressure
  • Adaptive reserve based on real household water use
  • Water Efficient Technology (W.E.T.) to reduce salt and water consumption
  • Smart monitoring with wripli® app alerts and system tracking
  • Lifetime tank warranty and 7-year parts warranty

Available in multiple sizes and paired with properly sized brine tanks, the system is selected based on professional water analysis to match both contaminant levels and household demand.

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Common Twin Cities Water Problems – FAQs

Why does my water smell like chlorine or chemicals?

Municipal water is disinfected with chlorine or chloramine to protect public health. While effective, these disinfectants can leave a noticeable taste and odor. Whole-home carbon filtration and refining systems can significantly reduce these compounds before water reaches your fixtures.

Hydrogen sulfide gas and sulfur bacteria commonly occur in private wells. They create unpleasant odors and can contribute to slime buildup in plumbing. Proper oxidation and filtration systems are used to remove sulfur and control related bacteria.

Yes. Much of the Twin Cities region has naturally high calcium and magnesium levels. Hard water causes scale buildup, soap inefficiency, and premature wear on water heaters, dishwashers, and washing machines.

Iron in well water or older municipal lines can oxidize and leave reddish-brown stains. Both dissolved (clear-water) and particulate (red-water) iron require specific filtration and conditioning strategies to prevent staining and plumbing fouling.

Tannins from decaying organic material can leach into groundwater, creating yellow or brown discoloration. These organic compounds often accompany well water and require specialized media or carbon treatment.

Runoff and groundwater movement can introduce herbicides, pesticides, VOCs, and industrial byproducts into some water supplies. Advanced carbon and membrane-based systems are used to reduce these compounds when testing indicates their presence.

PFAS and microplastics are emerging contaminants found in some Minnesota water sources. They are persistent and require high-performance carbon and reverse osmosis technologies for effective reduction.

Total Dissolved Solids (TDS) represent the overall mineral and salt content in water. High TDS can affect taste, scaling, and appliance efficiency, and may indicate the presence of undesirable contaminants.

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Solving Your Water Problems?

Professional water testing and system sizing ensure the right technology is selected for your specific contaminants, usage patterns, and plumbing demands.