Pentair GRO-575B: NSF certification check
Certified to: NSF/ANSI 42, NSF/ANSI 53, NSF/ANSI 58, NSF/ANSI 401 (per NSF's public listing, checked 2026-10-17).
| Type | Reverse osmosis system |
|---|---|
| Replacement element(s) on NSF listing | FDF1-RC, F2B2-RC2, F2B1-RC + GRO75-RC membrane |
| Rated service cycle (NSF listing) | 675 gallons |
| Rated flow (NSF listing) | .6 gpm |
| Daily production rate (NSF/ANSI 58 listing) | 21.08 gallons/day |
| Replacement filter price | Not verified from the manufacturer's own store (data gap) |
| NSF listings | NSF/ANSI 42, NSF/ANSI 53, NSF/ANSI 58, NSF/ANSI 401 |
Exactly what NSF lists
NSF/ANSI 42: Aesthetic effects: chlorine, taste and odor, particulates
Certified claims on NSF's listing: Chlorine Reduction, Taste and Odor Reduction, Nominal Particulate Reduction, Class I.
NSF/ANSI 53: Health effects: e.g. lead, cysts, VOCs, PFOA/PFOS
Certified claims on NSF's listing: Atrazine Reduction, Cyst Reduction, Lead Reduction.
NSF/ANSI 58: Reverse osmosis systems: TDS plus optional health claims
Certified claims on NSF's listing: Arsenic (Pentavalent), Barium Reduction, Cadmium Reduction, Chromium (Hexavalent) Reduction, Chromium (Trivalent) Reduction, Copper Reduction, Cyst Reduction, Fluoride Reduction, Lead Reduction, Radium 226/228 Reduction, Selenium Reduction, Turbidity Reduction, TDS Reduction.
NSF/ANSI 401: Emerging compounds / incidental contaminants
Certified claims on NSF's listing: Microplastics Reduction.
Contaminant pages featuring this model
Lead · Chlorine · Cysts (Cryptosporidium, Giardia) · Fluoride · Arsenic (pentavalent) · Total dissolved solids (TDS) · Hexavalent chromium (chromium-6) · Microplastics
View Pentair GRO-575B on the manufacturer's site (plain link, not an affiliate link)
We have not tested this product. Certification means NSF verified specific claims under specific test conditions; it does not mean your water will be safe. Get your water tested and see the methodology.