What replacement filters fit a 3M Aqua-Pure CMTRO-75?

The 3M Aqua-Pure CMTRO-75 reverse osmosis system uses 3 filter stages.

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Key takeaways

  • Reverse Osmosis system by 3M Aqua-Pure.
  • 3 filter stages: 47-55706G2, 66-4710G2, 47-55710G2.
  • NSF certified to reduce arsenic (pentavalent), barium, cadmium, chlorine, and more.
  • A cheaper compatible filter set can fit the same housings - confirm its own certification before buying.

Filter stages

Stage 1
47-55706G2
Stage 2
66-4710G2
Stage 3
47-55710G2

What the CMTRO-75 removes

The CMTRO-75 is NSF/ANSI certified to reduce the following, grouped by the standard it was tested to:

NSF/ANSI 42 - Chlorine

Chlorine, Taste and Odor

NSF/ANSI 58 - Arsenic (Pentavalent)

Arsenic (Pentavalent), Barium, Cadmium, Chromium (Hexavalent), Chromium (Trivalent), Copper, Cyst, Fluoride, Radium 226/228, Lead, Selenium, TDS, Turbidity

Filters for the rest of your home

FiltersDex covers the exact replacement filter - and what it removes - across every appliance:

Frequently asked

What replacement filters fit a 3M Aqua-Pure CMTRO-75?

The 3M Aqua-Pure CMTRO-75 uses 3 filter stages: 47-55706G2, 66-4710G2, 47-55710G2.

Is the 3M Aqua-Pure CMTRO-75 NSF certified?

Yes - the 3M Aqua-Pure CMTRO-75 itself is listed in the NSF Drinking Water Treatment Units (DWTU) database, certified to reduce arsenic (pentavalent), barium, cadmium, chlorine, and more.

Does the 3M Aqua-Pure CMTRO-75 remove lead?

Yes - the 3M Aqua-Pure CMTRO-75 is NSF certified to reduce lead.

Should I buy the genuine filter set or an aftermarket one?

The genuine 3M Aqua-Pure cartridges are the safe, exact-fit choice. A cheaper compatible set can fit the same housings too - just confirm it carries its own independent certification for the contaminants you care about before buying.