What replacement filters fit a 3M Aqua-Pure 3MRO401?

The 3M Aqua-Pure 3MRO401 reverse osmosis system uses 4 filter stages.

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Key takeaways

Reverse Osmosis system by 3M Aqua-Pure.
4 filter stages: 3MROP411, 3MROP412, 3MROM413, 3MROP416.
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.

Reverse Osmosis System3MRO4013M Aqua-Pure

Removes Lead Removes Chlorine, taste & odor Removes Cysts (Cryptosporidium, Giardia)

Buy the replacement filters for your 3MRO401

Genuine 3M Aqua-Pure filter setThe exact replacement cartridges for the 3M Aqua-Pure 3MRO401.Shop the filter set Cheaper filters that fitCompatible cartridges fit the same housings for less - confirm any NSF certification claim independently before you buy.Shop compatible filters

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Filter stages

Stage 1: 3MROP411
Stage 2: 3MROP412
Stage 3: 3MROM413
Stage 4: 3MROP416

What the 3MRO401 removes

The 3MRO401 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, Lead, Radium 226/228, Selenium, TDS, Turbidity, Fluoride

Filters for the rest of your home

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

Refrigerator filterswater + air, by fridge model Air purifier filtersLevoit, Coway, Honeywell, Winix Vacuum filtersShark & Dyson, HEPA + foam Humidifier filterswicks + furnace pads Water pitcher filtersBrita, PUR, ZeroWater - NSF

Frequently asked

What replacement filters fit a 3M Aqua-Pure 3MRO401?

The 3M Aqua-Pure 3MRO401 uses 4 filter stages: 3MROP411, 3MROP412, 3MROM413, 3MROP416.

Is the 3M Aqua-Pure 3MRO401 NSF certified?

Yes - the 3M Aqua-Pure 3MRO401 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 3MRO401 remove lead?

Yes - the 3M Aqua-Pure 3MRO401 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.