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Reverse Osmosis Drinking Water

Even after a water softener, Twin Cities municipal water carries chlorine, dissolved metals, fluoride, and trace contaminants at the kitchen tap. Under-sink reverse osmosis pushes water through a microscopic membrane that removes nearly all of it, including PFAS with a certified PFAS-rated membrane, delivering drinking and cooking water cleaner than most bottled water. Free in-home water test before any quote.

Call 651-738-0580

Quick Summary

A.J. Alberts installs under-sink and whole-home reverse osmosis systems in the Twin Cities, including PFAS-rated membranes certified to NSF/ANSI 53 or 58 for East Metro homes in the contamination zone. RO removes chlorine, dissolved metals, fluoride, sodium from softening, and trace contaminants. Free on-site water test, written upfront pricing, lifetime craftsmanship warranty. Call 651-738-0580.

What Reverse Osmosis Removes

RO pushes water through a microscopic membrane that filters out almost everything dissolved in your water. Here is what you stop drinking after RO is installed.

Chlorine and chlorine byproducts

Improves taste and removes the disinfectant residue from municipal treatment.

Dissolved metals

Lead, copper, iron — particularly relevant in homes with aging plumbing.

Fluoride

Removed by the RO membrane. Households who want non-fluoridated drinking water get it.

PFAS

With a PFAS-rated membrane or pre-filter certified to NSF/ANSI 53 or 58, RO removes PFAS at point of use.

Sodium from softener

If you have a water softener, RO removes the sodium that ion-exchange adds. Good for low-sodium households.

Total dissolved solids

Overall mineral content drops significantly, leaving water cleaner than most bottled water.

Under-Sink vs Whole-Home RO

For most Twin Cities homes, under-sink RO at the kitchen tap is the right answer. Here is why, and when whole-home RO makes sense instead.

Under-Sink RO (most homes)

Installed under your kitchen sink with a dedicated faucet, plus optional fridge water/ice line connection.

Best for:

  • • Drinking and cooking water (the exposure that matters most)
  • • Filtered ice and refrigerator water
  • • Budget-conscious installs
  • • Homes not in the East Metro PFAS plume

Whole-Home RO

A large-capacity RO system installed on the main water line. Treats all water entering the home.

Best for:

  • • Severe water quality issues across the home
  • • Households where bathing exposure also matters
  • • Larger upfront investment but higher coverage
  • • Combine with whole-home certified GAC for PFAS households

Reverse Osmosis FAQs

What does reverse osmosis remove from drinking water?
Reverse osmosis pushes water through a microscopic membrane that filters out nearly all dissolved contaminants including chlorine and chlorine byproducts, dissolved metals (lead, copper, iron), fluoride, sodium from softening, PFAS (with a PFAS-rated membrane), and most organic chemicals. The result is drinking and cooking water cleaner than most bottled water.
Do I need whole-home reverse osmosis or just under-sink?
For most Twin Cities homes, under-sink RO at the kitchen tap is the right answer. It treats the water you drink and cook with, which is where contaminant exposure matters most. Whole-home RO is significantly more expensive and usually only justified for homes with severe water quality issues across the board. We help you decide based on your free in-home water test.
Does reverse osmosis remove PFAS?
Yes, when configured with a PFAS-rated membrane or pre-filter certified to NSF/ANSI 53 or 58 for PFAS reduction. RO is one of the most effective household technologies for removing PFAS at the point of use. For East Metro homes in the documented 3M PFAS zone, we typically combine whole-home certified GAC filtration with under-sink RO for layered protection.
How much does under-sink reverse osmosis installation cost?
Under-sink RO installation cost varies by system stage count, membrane type (PFAS-rated vs standard), and whether a refrigerator/ice maker line is added. A.J. Alberts provides written upfront pricing after the free in-home water test. No commission-driven upsells.
How long do RO filters and membranes last?
Sediment and carbon pre-filters typically need replacement every 6 to 12 months. The RO membrane itself lasts 2 to 5 years depending on incoming water quality. Installing RO downstream of a water softener significantly extends membrane life in the Twin Cities, since the softener removes the hardness that scales the membrane.
Will reverse osmosis remove fluoride?
Yes. The RO membrane removes most fluoride along with other dissolved minerals. Households who want non-fluoridated drinking water get it with under-sink RO.

Sources & Citations

Want Cleaner Drinking Water?

A free in-home water test takes 15 minutes. We give you the exact reading and recommend the right RO system in writing.

Schedule Free Water Test Call 651-738-0580