What replacement filters fit a Pentair OmniFilter RO2050?

The Pentair OmniFilter RO2050 reverse osmosis system uses 6 filter stages.

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Key takeaways

  • Reverse Osmosis system by Pentair.
  • 6 filter stages: CB1, OM1, R200 Series A, ROR2000, RS14, ROR2050.
  • NSF certified to reduce arsenic (pentavalent), barium, cadmium, chromium (hexavalent), and more.
  • A cheaper compatible filter set can fit the same housings - confirm its own certification before buying.
Reverse Osmosis SystemOmniFilter RO2050Pentair

Filter stages

Stage 1
CB1
Stage 2
OM1
Stage 3
R200 Series A
Stage 4
ROR2000
Stage 5
RS14
Stage 6
ROR2050

What the OmniFilter RO2050 removes

The OmniFilter RO2050 is NSF/ANSI certified to reduce the following, grouped by the standard it was tested to:

NSF/ANSI 53 - Cyst

Cyst

NSF/ANSI 58 - Arsenic (Pentavalent)

Arsenic (Pentavalent), Barium, Cadmium, Chromium (Hexavalent), Chromium (Trivalent), Copper, Fluoride, Lead, Radium 226/228, 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 Pentair OmniFilter RO2050?

The Pentair OmniFilter RO2050 uses 6 filter stages: CB1, OM1, R200 Series A, ROR2000, RS14, ROR2050.

Is the Pentair OmniFilter RO2050 NSF certified?

Yes - the Pentair OmniFilter RO2050 itself is listed in the NSF Drinking Water Treatment Units (DWTU) database, certified to reduce arsenic (pentavalent), barium, cadmium, chromium (hexavalent), and more.

Does the Pentair OmniFilter RO2050 remove lead?

Yes - the Pentair OmniFilter RO2050 is NSF certified to reduce lead.

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

The genuine Pentair 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.