East Metro Water Quality: PFAS, Hard Water, and Free Testing for Twin Cities Homeowners
Every Twin Cities home has hard water. Most East Metro homes have PFAS on top of that. A.J. Alberts has tested thousands of Twin Cities homes since 1989 and the answer is almost always the same: you need a water softener, and if you live in the East Metro PFAS zone, you also need certified filtration. Free in-home water testing tells you exactly what your home needs.
Twin Cities Water Is Hard, Contaminated, or Both
Every Twin Cities home is dealing with at least one serious water problem and most are dealing with several. The entire metro sits in the "very hard" or "extremely hard" water classification — 13 to 22 grains per gallon — which damages plumbing, appliances, and skin every single day untreated water runs through your home. On top of that, the East Metro is one of the most documented PFAS contamination zones in the United States, spanning more than 150 square miles and affecting over 140,000 Minnesotans, tied to historical 3M discharge.
The honest answer to "do I need a water softener?" is yes. Every home in the metro does. The question is whether you also need PFAS filtration, iron removal, or specialty treatment on top of that. A free in-home water test from A.J. Alberts gives you the exact answer in 15 minutes.
Hard Water — Every Twin Cities Home
Twin Cities municipal water averages 13 to 22 grains per gallon, well into the "very hard" to "extremely hard" range. Without a softener, this damages your home daily.
Softener options →PFAS — East Metro Cities
Documented across 150+ square miles, affecting more than 140,000 East Metro residents. If you live in Washington County or nearby, you should have certified PFAS filtration.
MDH PFAS info →Iron & Well Water
Common in rural Washington County, Anoka County, and any private well. Iron staining, sulfur odor, sediment, and bacteria all require specialty treatment beyond a basic softener.
Iron filtration →Interactive Water Quality Map
Click any city to see hardness, PFAS status, and recommended treatment. Color-coded by overall concern level.
Water Quality by City
Comprehensive water quality data for cities A.J. Alberts services. Sortable, scannable. Updated 2026-05.
What is PFAS and why does it matter in the East Metro?
PFAS (per- and polyfluoroalkyl substances) are synthetic chemicals used since the 1940s in products like non-stick cookware, water-repellent fabrics, firefighting foam, and food packaging. In the Twin Cities East Metro, PFAS contamination originates primarily from historical discharge by 3M, with contaminated groundwater now affecting over 140,000 Minnesotans across more than 150 square miles in Washington County.
Health concerns
The EPA has classified certain PFAS compounds, including PFOA, as likely human carcinogens. Documented health effects include impacts on the immune system, cholesterol levels, fetal development, and certain cancers. EPA PFAS resources.
How PFAS enters drinking water
PFAS does not break down naturally. Industrial discharge, runoff from firefighting foam use, and landfill leachate can introduce PFAS into groundwater, where it persists for decades. Most East Metro PFAS contamination is tied to historical 3M operations.
Which East Metro cities are affected
Cottage Grove, Oakdale, Lake Elmo, Woodbury, Hastings, Hugo, Mahtomedi, White Bear Lake, and New Brighton have documented PFAS contamination. Bayport, Lakeland, St. Paul Park, Newport, and Afton are within the broader contamination zone per MDH mapping.
What filtration removes PFAS
Effective PFAS removal uses granular activated carbon (GAC) certified for PFAS reduction, or reverse osmosis. Both can be installed at the kitchen tap (point of use) or on the main supply line (whole home).
What does NOT remove PFAS
Standard Brita-style pitcher filters, basic refrigerator filters, and most low-end faucet filters do not remove PFAS. They are designed primarily for chlorine taste improvement. PFAS removal requires specifically certified filtration technology.
How hard is the water in the Twin Cities?
Twin Cities municipal water averages 13 to 22 grains per gallon, which puts every home in the metro into the "Very Hard" or "Extremely Hard" classification. This is more than triple the threshold the Water Quality Association uses to define water that should be softened. Without a water softener, your plumbing, appliances, and fixtures are accumulating damage daily.
The Hardness Scale
Every level above 3 grains per gallon means damage is happening. Here is what each tier looks like in your home, and what treatment is required to stop it.
Moderately Hard
Spotting on dishes and glassware. Dry skin after showers. Gradual mineral buildup on fixtures over time.
Softener recommended.
Hard
Visible scale buildup on faucets and showerheads. Soap and detergent lather poorly. Water heater begins straining. Appliance efficiency drops.
Softener strongly advised.
Very Hard
Severe scaling damages plumbing and water heaters. White crust on every fixture. Dishwasher and washing machine performance noticeably reduced. Appliances fail years earlier than they should.
Softener required.
Extremely Hard
Rapid scale accumulation throughout the home. Severe soap resistance — even premium detergents struggle. Fixtures show permanent damage in just a few years. This is what most Twin Cities homes have.
Advanced or specialty softener required.
What Untreated Hard Water Costs You
Allowing water above 3.5 gpg, but especially above 7 gpg, to run untreated through your home causes real, ongoing financial damage. Here is what your home is paying for hard water every month you delay treatment.
Appliance Damage
Limescale acts as an insulator inside your water heater, driving up energy bills and shortening the appliance's lifespan. Dishwashers, washing machines, and tankless water heaters fail years earlier than they should because of untreated hard water. The cost of one premature water heater replacement is more than a quality softener.
Plumbing Clogs
Mineral deposits slowly constrict water flow inside your pipes, leading to low water pressure throughout the home. Once buildup reaches a certain point, the only fix is repiping. Softening prevents the deposits from forming in the first place.
Cleaning Frustrations
Hard water binds to soap, leaving behind a stubborn film of soap scum on shower walls. Laundry fades faster. Faucets crust with white deposits. You use more cleaning product, more detergent, and more shampoo than you would with softened water, and you still get worse results.
How to Choose a Softener for 14+ gpg Water
Most Twin Cities homes test in the 14+ gpg range, which is the extremely hard tier. A standard hardware-store softener cannot handle water this severe without regenerating constantly, wasting salt, and bleeding hard water through to your taps. If you live in the Twin Cities and you want a softener that actually works, here is what your system needs to have.
High grain capacity
Look for a larger system, typically 48,000 to 64,000 grains minimum, so the system does not need to regenerate every single night. A 32,000-grain budget unit will be running brine cycles constantly in a 14+ gpg home, wasting salt, water, and electricity.
Co-current or upflow regeneration
Look for "upflow" systems. These drive brine up through the resin bed more efficiently, stripping away the heavy mineral loads that build up in extremely hard water. Downflow units made for moderately hard water do not keep up.
On-demand metered valve
Avoid timer-based systems entirely. Buy a metered valve (Fleck or Clack are the proven brands) that regenerates only after a specific gallon threshold is reached. This saves salt and water and matches regeneration to your actual usage.
Crucial Programming Adjustments
Installing the right hardware is only half the job. Programming the system for extreme hardness is what separates a softener that actually works from one that lets hard water bleed through.
Over-program the hardness
Set the system's hardness level 2 to 3 grains higher than your actual test result. If you test at 14 gpg, program it for 17 gpg. This prevents hard water bleed-through during heavy use periods and end-of-cycle. Most factory defaults under-program for extreme hardness.
Factor in iron
If your water also has iron, add 5 gpg of hardness to your programmer for every 1 ppm of iron detected. Iron is a hidden capacity killer. A softener programmed without compensating for iron will fail to soften and will damage the resin bed over time.
Most homeowners cannot tune this themselves. We do all of this on every install — sizing the system to your actual water test, picking the right valve, and programming with the correct compensation. It is the difference between a softener you forget about and one you fight for the next ten years.
Your Home Is Paying for Hard Water Every Month
Schedule a free in-home water test and we will tell you exactly what your hardness reading is, what damage is happening, and what the right softener (correctly sized, valved, and programmed) is for your home.
What about iron, sulfur, and other private well issues?
Iron staining, sulfur or rotten-egg odor, and sediment are common in private wells across rural Washington County, Anoka County, and parts of the East Metro. These issues require specialty filtration that targets the specific contaminant, not a general softener.
Iron in particular has multiple forms. Ferrous (dissolved) iron needs different treatment than ferric (rust particle) iron. Sulfur from hydrogen sulfide gas needs different treatment than sulfur from sulfate-reducing bacteria. A.J. Alberts tests on-site to identify the specific issue, then recommends the right technology.
See our iron and odor removal services.
PFAS Contamination Timeline
The East Metro PFAS story is decades long. Here is the documented chronology that shaped the current regulatory and treatment landscape.
- 1970s
3M begins disposing of PFAS waste at sites in Washington County, MN.
- 2002
First detection of PFAS in private wells near Oakdale, MN.
- 2007
Minnesota Department of Health issues first health advisories for PFAS contamination.
- 2010
3M settles with the State of Minnesota over groundwater contamination claims.
- 2018
3M agrees to $850M settlement for natural resources damages in Minnesota.
- 2022
EPA issues new lifetime health advisories with significantly lower acceptable PFAS thresholds.
- 2024
EPA finalizes national PFAS drinking water standards.
- 2025
A.J. Alberts expands PFAS-focused whole-home water filtration services across the East Metro.
How A.J. Alberts diagnoses and solves water quality problems
Every water quality engagement at A.J. Alberts follows the same five-step process: free on-site testing, results review, solution recommendation, master-plumber installation, and ongoing maintenance. No commission-driven upsells, no fear-based sales.
Free in-home water test
A trained technician tests your water on-site for hardness, iron, chlorine, pH, and total dissolved solids.
Review results with the homeowner
We walk you through the numbers and explain what they mean for your specific home.
Solution recommendation
Based on the specific issues identified, we recommend the right combination of softening, filtration, or specialty treatment.
Professional installation
A master plumber installs and calibrates the system, with permits pulled where required.
Ongoing service and maintenance
Optional maintenance plans include annual inspections, filter replacement, and softener service.
Meet Steve Grohn, Owner of A.J. Alberts Plumbing
Steve Grohn owns A.J. Alberts Plumbing and is a longtime Washington County resident. He raised his family in Woodbury and has personal and professional involvement in East Metro water quality going back decades.
Under Steve's leadership, A.J. Alberts has built one of the deepest water conditioning practices in the East Metro, with specialized expertise in PFAS filtration for affected communities and a commitment to honest, no-commission service.
"The first thing we tell every customer is, you do not need to buy anything from us. Let us test your water for free, tell you what is actually in it, and then you decide. That is how we have stayed in business for 37 years."
Steve Grohn, Owner
More about A.J. Alberts →Find Out What's In Your Water (Free In-Home Test)
No obligation. No high-pressure sales. Just clarity on what is in your water.
Frequently Asked Questions
Is the water in Woodbury safe to drink?
How do I know if my home has PFAS in the water?
What is the difference between a water softener and a water filter?
Do I really need a whole-home filtration system?
How much does PFAS filtration cost in Minnesota?
Are East Metro municipal water treatments enough for PFAS?
Can I drink water from a private well in the East Metro?
How often should I have my water tested?
Does A.J. Alberts test water for free?
What cities does A.J. Alberts serve for water filtration?
What is considered hard water in Minnesota?
Does a Brita pitcher remove PFAS?
What is the best way to remove PFAS from drinking water?
How long does whole-home PFAS filtration last before it needs servicing?
Is iron in well water dangerous?
What is reverse osmosis and do I need it?
Water Quality Glossary
- PFAS / PFOA / PFOS
- Per- and polyfluoroalkyl substances. Synthetic chemicals used since the 1940s in industrial and consumer products. PFOA and PFOS are two of the most studied PFAS compounds and the primary focus of EPA regulation in the United States.
- Grains per gallon (gpg)
- The standard U.S. measure of water hardness. One grain per gallon equals 17.1 parts per million of calcium carbonate. The Water Quality Association classifies water as soft below 1 gpg, slightly hard 1 to 3.5, moderately hard 3.5 to 7, hard 7 to 10.5, and very hard above 10.5.
- Reverse osmosis (RO)
- A water filtration process that pushes water through a semi-permeable membrane, removing nearly all dissolved contaminants including PFAS, fluoride, dissolved metals, and most organic compounds.
- Granular activated carbon (GAC)
- A filtration media made of porous carbon that adsorbs dissolved organic contaminants including chlorine, taste and odor compounds, and certain PFAS compounds depending on certification level.
- Water softener vs water conditioner
- A water softener uses ion exchange to remove calcium and magnesium, producing genuinely soft water. A water conditioner is a broader term sometimes used for systems that alter mineral behavior without removing minerals. Salt-based softeners are most effective for genuine hard water reduction.
- Hard water vs soft water
- Hard water contains dissolved calcium and magnesium that cause scale buildup, soap inefficiency, and appliance wear. Soft water has had those minerals removed, typically through ion exchange.
- Iron filter
- A specialty filtration system designed to remove dissolved or particulate iron from well water. Common designs include oxidation-based filters and chemical injection systems.
- Sediment filter
- A pre-filter that removes physical particles like sand, silt, and rust from the water supply, typically installed before other treatment to protect downstream equipment.
- Whole-home filtration
- A filtration system installed on the main water supply line that treats all water entering the home, including water used for bathing, laundry, and cooking, not just drinking.
- Point-of-use filtration
- A filtration system installed at a single tap, such as an under-sink RO system that treats only the kitchen drinking water tap.
Sources and Citations
- • Minnesota Department of Health: PFAS in Drinking Water
- • U.S. Environmental Protection Agency: PFAS Information
- • EPA: PFAS Drinking Water Standards
- • Minnesota Department of Health: Consumer Confidence Reports
- • USGS: Water Hardness Reference
- • Minnesota Attorney General: 3M Settlement Information
Water Quality Service Areas
A.J. Alberts services every city listed in the map and table above. Browse by region:
Ready to Test Your Water?
Free in-home water testing. No obligation. Most appointments scheduled within a few business days.
A.J. Alberts Plumbing & Water Conditioning
7975 Afton Road · Woodbury, MN 55125 · 651-738-0580