Certified to remove
Water filters certified to remove Nitrite
Same infant methemoglobinemia risk as nitrate but more potent; MCL 1 mg/L as N.
77
certified models
11
with current prices
"Certified" means the model is listed in the NSF, WQA, or IAPMO public database as reducing Nitrite — not just "tested to" a standard.
Two ways to fix it
Pick the path that fits you
You can start cheap with a no-install filter, or solve it permanently with an installed system that costs far less per gallon over time. Both options below are certified to reduce Nitrite.
Best permanent solution
EcoPure
ECOP30
reverse_osmosis · lowest long-term cost
$219.99 · 6.2¢/gal
Buy → Top certified picks with prices
All 77 certified filters
| Filter | Type | Capacity | Price | ¢/gal | |
|---|---|---|---|---|---|
Soft Water Supply North Star NSRO42C4 NSF | REVERSE OSMOSIS | 3,850 gal | $65.99 | 1.7 | Buy |
EcoPure ECOP30 NSF | REVERSE OSMOSIS | 3,850 gal | $219.99 | 6.2 | Buy |
GE GNRQ18NBN NSF | REVERSE OSMOSIS | 260 gal | $63.87 | 24.6 | Buy |
GE GXRQ18NBN NSF/IAPMO | REVERSE OSMOSIS | 260 gal | $65 | 24.6 | Buy |
GE GXRV40TBN NSF/IAPMO | REVERSE OSMOSIS | 260 gal | $63.87 | 24.6 | Buy |
Soft Water Supply North Star NSROPS NSF | REVERSE OSMOSIS | 3,850 gal | $65.99 | — | Buy |
Microline T.F.C.-435 NSF | REVERSE OSMOSIS | — | $66.89 | — | Buy |
Microline T.F.C.-435FFSX NSF | REVERSE OSMOSIS | — | $66.89 | — | Buy |
Microline T.F.C.-435FSX NSF | REVERSE OSMOSIS | — | $66.89 | — | Buy |
Microline T.F.C.-435RC NSF | REVERSE OSMOSIS | — | $66.89 | — | Buy |
Microline T.F.C.-435X NSF | REVERSE OSMOSIS | — | $66.89 | — | Buy |
Pentair GRO-350B NSF | REVERSE OSMOSIS | 750 gal | — | 5.1 | |
Solventum 3MRO501 NSF | REVERSE OSMOSIS | 1,500 gal | — | 13.8 | |
EcoWater Systems ERO-385 NSF | REVERSE OSMOSIS | 4,500 gal | — | — | |
EcoWater Systems ERO-385-BN NSF | REVERSE OSMOSIS | 4,500 gal | — | — | |
EcoWater Systems ERO-385-CP NSF | REVERSE OSMOSIS | 4,500 gal | — | — | |
EcoWater Systems ERO-385E NSF | REVERSE OSMOSIS | 4,500 gal | — | — | |
EcoWater Systems ERO-385E-BN NSF | REVERSE OSMOSIS | 4,500 gal | — | — | |
EcoWater Systems ERO-385E-CP NSF | REVERSE OSMOSIS | 4,500 gal | — | — | |
EcoWater Systems HERO-385-BN NSF | REVERSE OSMOSIS | 4,500 gal | — | — | |
EcoWater Systems HERO-385-CP NSF | REVERSE OSMOSIS | 4,500 gal | — | — | |
EcoWater Systems HERO-385PLUS NSF | REVERSE OSMOSIS | 4,500 gal | — | — | |
Brita Total360 BRDROS NSF | REVERSE OSMOSIS | 3,850 gal | — | — | |
Water Channel Partners Ecodyne ELXROTU NSF | REVERSE OSMOSIS | 3,850 gal | — | — | |
Whirlpool WHAPSRO NSF | REVERSE OSMOSIS | 3,850 gal | — | — | |
Whirlpool WHAROS5 NSF | REVERSE OSMOSIS | 3,850 gal | — | — | |
Whirlpool WHER25 NSF | REVERSE OSMOSIS | 3,850 gal | — | — | |
A.O. Smith AORO-50 NSF | REVERSE OSMOSIS | — | — | — | |
Aqua Systems AQPC-35 NSF | REVERSE OSMOSIS | — | — | — | |
Aqua Systems AQPC-435 NSF | REVERSE OSMOSIS | — | — | — | |
Aqua Systems S33201-PL6-AS NSF | REVERSE OSMOSIS | — | — | — | |
AQUA TREATMENT SERVICE ATS-PRO50-4 NSF | REVERSE OSMOSIS | — | — | — | |
Atlantic HR-35-TFC-4W NSF | REVERSE OSMOSIS | — | — | — | |
Capital Water Softener Aqua Bella CP-TFC-M50-RO NSF | REVERSE OSMOSIS | — | — | — | |
Capital Water Softener Aqua Bella CP-TFC-NM50-RO NSF | REVERSE OSMOSIS | — | — | — | |
Charger Water Treatment Products CWQC50 NSF | REVERSE OSMOSIS | — | — | — | |
Charger Water Treatment Products ClearConnect QC50 NSF | REVERSE OSMOSIS | — | — | — | |
Frakco AM4QC NSF | REVERSE OSMOSIS | — | — | — | |
Griesbach 78-0036-XX NSF | REVERSE OSMOSIS | — | — | — | |
Hellenbrand MILLENNIUM PRO S33101-PL6-HB NSF | REVERSE OSMOSIS | — | — | — | |
Hellenbrand MILLENNIUM PRO S33201-PL6-HB NSF | REVERSE OSMOSIS | — | — | — | |
Hellenbrand Millennium MRO-35 NSF | REVERSE OSMOSIS | — | — | — | |
Hellenbrand Millennium MRO-35GF NSF | REVERSE OSMOSIS | — | — | — | |
Hydronix Water Technology Hydro Guard HDGT-45XX NSF | REVERSE OSMOSIS | — | — | — | |
Hydronix Water Technology HDGT-TW50 C NSF | REVERSE OSMOSIS | — | — | — | |
Brita Pro BPLRO-35 NSF | REVERSE OSMOSIS | — | — | — | |
Lancaster Water Treatment CRO-350 NSF | REVERSE OSMOSIS | — | — | — | |
Lancaster Water Treatment LRO-35 NSF | REVERSE OSMOSIS | — | — | — | |
Lancaster Water Treatment PRO-50 NSF | REVERSE OSMOSIS | — | — | — | |
Marlo Incorporated TFC-35 NSF | REVERSE OSMOSIS | — | — | — | |
Marlo Incorporated TFC-35M NSF | REVERSE OSMOSIS | — | — | — | |
Master Water Conditioning Puro-35T NSF | REVERSE OSMOSIS | — | — | — | |
Microline T.F.C.-335 NSF | REVERSE OSMOSIS | — | — | — | |
Microline T.F.C.-335FS NSF | REVERSE OSMOSIS | — | — | — | |
Microline T.F.C.-335FSX NSF | REVERSE OSMOSIS | — | — | — | |
Microline T.F.C.-335X NSF | REVERSE OSMOSIS | — | — | — | |
Microline T.F.C.-3PL NSF | REVERSE OSMOSIS | — | — | — | |
Microline T.F.C.-3PLX NSF | REVERSE OSMOSIS | — | — | — | |
Microline T.F.C.-4PL NSF | REVERSE OSMOSIS | — | — | — | |
Microline T.F.C.-4PLF NSF | REVERSE OSMOSIS | — | — | — | |
Microline T.F.C.-4PLX NSF | REVERSE OSMOSIS | — | — | — | |
R.E. Prescott Co ELP50-4 NSF | REVERSE OSMOSIS | — | — | — | |
Rayne RaynePure Plus NSF | REVERSE OSMOSIS | — | — | — | |
Reynolds Water Conditioning QT-4 NSF | REVERSE OSMOSIS | — | — | — | |
Senwater Systems DRO512 NSF | REVERSE OSMOSIS | — | — | — | |
Senwater Systems TRO508 NSF | REVERSE OSMOSIS | — | — | — | |
Senwater Systems TRO510 NSF | REVERSE OSMOSIS | — | — | — | |
The LeverEdge AvantaPure RO-450 NSF | REVERSE OSMOSIS | — | — | — | |
The LeverEdge MAYTAG DRINKING WATER SYSTEM MODEL M-550 NSF | REVERSE OSMOSIS | — | — | — | |
The LeverEdge Pro Elite RO-450 NSF | REVERSE OSMOSIS | — | — | — | |
The LeverEdge Pro Elite RO-450 With Monitor NSF | REVERSE OSMOSIS | — | — | — | |
The LeverEdge Westinghouse Drinking Water System A-450 NSF | REVERSE OSMOSIS | — | — | — | |
The LeverEdge Westinghouse Drinking Water System D-550 NSF | REVERSE OSMOSIS | — | — | — | |
The LeverEdge Westinghouse Drinking Water System P-550 NSF | REVERSE OSMOSIS | — | — | — | |
The LeverEdge Westinghouse Drinking Water System R-450 NSF | REVERSE OSMOSIS | — | — | — | |
Water-Right UltroWater NSF | REVERSE OSMOSIS | — | — | — | |
Water-Right WRO-35 NSF | REVERSE OSMOSIS | — | — | — |