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EWG's Tap Water Database

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All water filters that remove trihalomethanes (tthm)

Below are all water filters that have been certified to remove trihalomethanes (tthm). For more information on these and other filters, see EWG's online water filter buying guide.

EWG fully supports consumers buying water filters from retailers of their choice. In each of the product pages below, for your convenience, we feature a retailer that sells the filter/s that meet your criteria, including small businesses, water filter companies' official websites and Amazon. EWG is not associated with the manufacturer or distributor of any of these products. However, we participate in the Amazon affiliate program and may receive small donations for purchases made on Amazon through our website link.

Note: EWG obtained product pricing information between January and July 2017 from retailers and manufacturers' websites, and we assume no responsibility for the accuracy of product prices on this page.

Product Filter Type Price
3M Aqua-Pure DW301 Drinking Water Filter System Plumbed-In to Separate Tap $250.60
AlwaysFresh HFC-1000 Drinking Water System Plumbed-In $309.75
Body Glove BG-12000 Water Filtration System Plumbed-In $680.76
Body Glove BG-3000 Water Filtration System Plumbed-In $438.02
Brita Advanced Faucet Filtration System - FF-100 Faucet Mount $25.23
Brita Basic Faucet Filtration System SAFF-100 Faucet Mount $20.38
eSpring Carbon Water Treatment System CXV3708 (110192) Counter-Top Connected to Sink Faucet $799
eSpring Carbon Water Treatment System CXV3708 (110193) Plumbed-In $799
eSpring Carbon Water Treatment System CXV3708 (111491) Counter-Top Connected to Sink Faucet $799
eSpring Model E4620J/E4872J Filtration System Counter-Top Connected to Sink Faucet -
eSpring UV Water Purifier Above Counter Unit Model 100185 (100188) Counter-Top Connected to Sink Faucet $1,114
eSpring UV Water Purifier Below Counter Unit Model 100185 (100189) Plumbed-In to Separate Tap $1,113.85
Frigidaire Frigidaire PureSource Ultra Refrigerator Filter Refrigerator Filter $45.95
PUR FM-2000B Classic Vertical Water Filtration Faucet Mount Faucet Mount $29.99
PUR FM-2000B Classic Vertical Water Filtration Faucet Mount Faucet Mount $29.99
PUR FM-3000 Faucet Filter System Faucet Mount $39.99
PUR FM-3000 Faucet Filter System Faucet Mount $39.99
PUR FM-3333B Faucet Filter System Faucet Mount $21.99
PUR FM-3333B Faucet Filter System Faucet Mount $21.99
PUR FM-3333BNM Faucet Mount Faucet Mount $29.99
PUR FM-3400B Vertical Faucet Mount Faucet Mount $54.99
PUR FM-3400B Vertical Faucet Mount Faucet Mount $54.99
PUR FM-3500B Advanced Vertical Faucet Mount Faucet Mount $39.99
PUR FM-3500B Advanced Vertical Faucet Mount Faucet Mount $39.99
PUR FM-3700B Advanced Faucet Water Filter Faucet Mount $37.53
PUR FM-3700B Advanced Faucet Water Filter Faucet Mount $37.53
PUR FM-3800B Vertical Faucet Mount Faucet Mount $39.99
PUR FM-4000B Advanced Faucet Water Filter Faucet Mount $43.43
PUR FM-4100B Advanced Faucet Water Filter Faucet Mount $27.79
PUR FM-4100B Advanced Faucet Water Filter Faucet Mount $27.79
PUR FM-9000B Advanced Plus Faucet Water Filter Faucet Mount $49.98
PUR FM-9100B Horizontal Faucet Mount Faucet Mount $72.95
PUR FM-9100B Horizontal Faucet Mount Faucet Mount $72.95
PUR FM-9400B Advanced Plus Faucet Water Filter Faucet Mount $39.54
PUR FM-9400B Advanced Plus Faucet Water Filter Faucet Mount $39.54
PUR FM-9500B Faucet Water Filtration Faucet Mount $44.98
PUR FM-9600B Advanced Plus Faucet Water Filter Faucet Mount $39.99
PUR FM-9600B Advanced Plus Faucet Water Filter Faucet Mount $39.99
PUR FM-9700B 3 Stage Horizontal Faucet Mount Faucet Mount $49.88
PUR PFM100B Basic Faucet Filtration System Faucet Mount $24.99
PUR PFM100B Basic Faucet Filtration System Faucet Mount $24.99
PUR PFM150W Basic Faucet Filtration System Faucet Mount $24.99
PUR PFM150W Basic Faucet Filtration System Faucet Mount $24.99
PUR PFM400H Advanced Faucet Filtration System Faucet Mount $34.99
PUR PFM400H Advanced Faucet Filtration System Faucet Mount $34.99
PUR PFM450S Advanced faucet Filtration System Faucet Mount $44.99
PUR PFM450S Advanced faucet Filtration System Faucet Mount $44.99
PUR PFM800HX Bluetooth Ultimate Faucet Filtration System Faucet Mount $44.99
PUR PFM800HX Bluetooth Ultimate Faucet Filtration System Faucet Mount $44.99
Shaklee MTS2000 Countertop Filter Model 82300 Counter-Top Connected to Sink Faucet $259.10