NSF-Listed Water Filter Manufacturers

Every manufacturer below has products listed in the official NSF, IAPMO, or WQA certification databases. Open a manufacturer to see the specific models and the standards each one is certified to.

• A.O. Smith Corporation
• A.O. Smith Water Treatment (North American), Inc.
• Access Business Group International LLC, DBA Amway
• Applied Membranes, Inc.
• Aqua Systems
• Aquion, Inc.
• Atlantic Filter Corporation
• Davey Water Products
• Eagle Water Treatment Systems
• EcoWater Systems LLC
• Electrophor, Inc.
• Filters Fast
• Filters Fast LLC
• Franke Kitchen Systems Division - Franke Luxury Products Group
• General Ecology, Inc.
• GHP Group Inc.
• HALO Water Systems
• Hellenbrand Inc.
• Hobart Corporation
• HongKong Ecoaqua Co., Limited / Qingdao Ecopure Filter Co., Ltd.
• Hoshizaki America, Inc.
• Ice-o-matic
• Insinkerator LLC
• Instapure Brands, Inc.
• Kemflo / Filbur
• Kent RO Systems Ltd.
• Lancaster Water Treatment
• Leaf Home Water Solutions, LLC
• LG Electronics Inc.
• Liebherr Hausgeräte GmbH
• LUMINOR Environmental Inc.
• Marlo Incorporated
• Master Water Conditioning, Inc.
• Mavea LLC
• Microline
• Mitsubishi Chemical Cleansui Corporation
• Mountain Plumbing Products
• Nu-Calgon Wholesaler, Inc.
• OASIS International
• Paragon Water Systems, Inc.
• Primo Water Corporation
• Rayne Corporation
• SHURflo Pump Manufacturing Co.
• Sub-Zero, Inc
• True Manufacturing Company
• Tupperware Brands Corp.
• Waterstone Faucets, LLC
• Watts Regulator Company