Which water filters remove mercury?

31 of the 96 current water filters we track are certified to reduce mercury (NSF/ANSI 53 listings). The lowest-priced is the Brita Denali 6-cup pitcher (Original filter) (pitcher, $23; about $48 a year in filters for 2 people). 12 more claim it from brand-run lab tests only, which is not certification.

The EPA legal limit (MCL) for mercury in public drinking water is 0.002 mg/L.

Source note

MCL and MCLG 0.002 mg/L (2 ppb). epa.gov

Lowest-priced certified filter, by type

Pitcher

Brita Denali 6-cup pitcher (Original filter)

$23 to buy · $48/yr for 2 · NSF/ANSI 53

Check price on Amazon →

Dispenser

Brita UltraMax dispenser (Original filter)

$39 to buy · $48/yr for 2 · NSF/ANSI 53

Check price on Amazon →

Faucet-mount

PUR Faucet filter (basic, horizontal)

— to buy · NSF/ANSI 53

Check price at PUR →

Countertop filter

Brita Hub countertop filter

$195 to buy · $60/yr for 2 · NSF/ANSI 53

Check price at Brita →

Under-sink filter

A. O. Smith AO-US-200 2-Stage Under Sink

$140 to buy · $168/yr for 2 · NSF/ANSI 53

Check price on Amazon →

Under-sink reverse osmosis

Aquasana SmartFlow RO

$480 to buy · $321/yr for 2 · NSF/ANSI 53

Check price on Amazon →

Certified to reduce mercury (31)

Each row is a certifier listing for this exact product with mercury in its reduction claims; the listing is linked. Yearly cost is replacement filters (plus drain water for RO) for 2 people, from each brand's filter prices and ratings.

Filter	Type	Listing	Price	Filters a year
Brita Denali 6-cup pitcher (Original filter)	Pitcher	WQA, NSF/ANSI 53	$23	$48	Check price on Amazon
Waterdrop Lucid 10-cup pitcher	Pitcher	IAPMO R&T, NSF/ANSI 53	$30	$168	Check price on Amazon
Brita Denali 6-cup pitcher (Elite filter)	Pitcher	WQA, NSF/ANSI 53	$36	$40	Check price at Brita
Brita Tahoe pitcher (Standard filter)	Pitcher	WQA, NSF/ANSI 53	$37	$48	Check price on Amazon
ZeroWater 10-cup pitcher	Pitcher	IAPMO R&T, NSF/ANSI 53	$38	$272	Check price on Amazon
Brita UltraMax dispenser (Original filter)	Dispenser	WQA, NSF/ANSI 53	$39	$48	Check price on Amazon
Brita Tahoe pitcher (Elite filter)	Pitcher	WQA, NSF/ANSI 53	$42	$40	Check price at Brita
ZeroWater 32-cup Ready-Read dispenser	Dispenser	IAPMO R&T, NSF/ANSI 53	$45	$272	Check price on Amazon
Brita UltraMax dispenser (Elite filter)	Dispenser	WQA, NSF/ANSI 53	$50	$40	Check price on Amazon
LifeStraw Home 7-cup pitcher	Pitcher	WQA, NSF/ANSI 53	$65	$127	Check price on Amazon
ZeroWater 52-cup Ready-Read dispenser (2 filters)	Dispenser	IAPMO R&T, NSF/ANSI 53	$65	$272	Check price on Amazon
A. O. Smith AO-US-200 2-Stage Under Sink	Under-sink filter	WQA, NSF/ANSI 53	$140	$168	Check price on Amazon
Brita Hub countertop filter	Countertop filter	WQA, NSF/ANSI 53	$195	$60	Check price at Brita
Aquasana Claryum 2-Stage	Under-sink filter	WQA, NSF/ANSI 53	$250	$148	Check price on Amazon
Aquasana Claryum Direct Connect	Under-sink filter	IAPMO R&T, NSF/ANSI 53	$250	$184	Check price on Amazon
Ninja HydraSense	Countertop filter	IAPMO R&T, NSF/ANSI 53	$250	$80	Check price on Amazon
Aquasana Claryum 3-Stage	Under-sink filter	WQA, NSF/ANSI 53	$350	$168	Check price on Amazon
Aquasana Clean Water Machine	Countertop filter	WQA, NSF/ANSI 53	$400	$147	Check price on Amazon
Aquasana Claryum 3-Stage Max Flow	Under-sink filter	WQA, NSF/ANSI 53	$450	$184	Check price on Amazon
Aquasana SmartFlow RO	Under-sink reverse osmosis	WQA, NSF/ANSI 53	$480	$321	Check price on Amazon
Multipure Aquaversa	Under-sink filter	NSF, NSF/ANSI 53	$620	$95	Check price at Multipure
Multipure Aquaperform	Under-sink filter	NSF, NSF/ANSI 53	$765	$51	Check price at Multipure
Multipure Aquapremier	Under-sink filter	NSF, NSF/ANSI 53	$965	$108	Check price at Multipure
Multipure Aqualuxe	Under-sink filter	NSF, NSF/ANSI 53	$1,325	$74	Check price at Multipure
A. O. Smith RO with Microbial Boost AO-US-RO-MB-4000	Under-sink reverse osmosis	IAPMO R&T, NSF/ANSI 53	—	$270	Check price at A. O. Smith
PUR 44-cup dispenser (2 filters)	Dispenser	IAPMO R&T, NSF/ANSI 53	—	—	Check price on Amazon
PUR 7-cup pitcher (basic filter)	Pitcher	IAPMO R&T, NSF/ANSI 53	—	—	Check price on Amazon
PUR Faucet filter (basic, horizontal)	Faucet-mount	IAPMO R&T, NSF/ANSI 53	—	—	Check price at PUR
PUR PLUS 11-cup pitcher	Pitcher	IAPMO R&T, NSF/ANSI 53	—	—	Check price at PUR
PUR PLUS 30-cup dispenser	Dispenser	IAPMO R&T, NSF/ANSI 53	—	—	Check price on Amazon
PUR PLUS faucet filter	Faucet-mount	IAPMO R&T, NSF/ANSI 53	—	—	Check price at PUR

Brand tests only, not certified (12)

These brands cite a lab report for mercury, but no certifier lists the claim for the product. A lab report can be real; it is not an independent, ongoing certification with factory audits.

Alexapure Pro gravity filter (Gen 2) (Countertop filter) · BCS Laboratories (ISO/IEC 17025, NELAP) and IAPMO R&T testing, per brand report SRT 0826 (Aug 21, 2026)
Clearly Filtered pitcher (Pitcher) · QFT / IAPMO New Jersey (lab report via brand)
Epic Water Filters Pure XP dispenser (Dispenser) · Two unnamed independent accredited labs (brand PDS, lab testing dated 2026-07-27)
Epic Water Filters Pure XP pitcher (Pitcher) · Two unnamed independent accredited labs (brand PDS, lab testing dated 2026-07-27)
Frizzlife PD600-TAM3 (Under-sink reverse osmosis) · SGS (per Frizzlife leaflet; tested to NSF/ANSI 42/53/58 methods)
Frizzlife PD800-TAM4 (Under-sink reverse osmosis) · SGS (per Frizzlife leaflet; tested to NSF/ANSI 42/53/58 methods)
Frizzlife SK99 (Under-sink filter) · Frizzlife (brand claim, no lab named)
LARQ Pitcher 2 (Pitcher) · Unnamed independent lab (brand performance report)
LARQ Pitcher PureVis (Pitcher) · Unnamed independent lab (brand performance report)
SimPure T1-400 (Under-sink reverse osmosis) · SGS-CSTC Ningbo (report NBF23-0005815-01, 2023, client Membrane Solutions)
SimPure Y7P-BW (Countertop reverse osmosis) · SGS-CSTC Ningbo (report NBF22-010777-02, 2022, client Membrane Solutions)
Waterdrop 10UA (Under-sink filter) · unnamed third-party lab (brand claim)

No mercury claim (53 filters)

Common questions

Which water filters remove mercury?

Is there a legal limit for mercury in tap water?

The EPA legal limit (MCL) for mercury in public drinking water is 0.002 mg/L.

How do I know a filter really removes mercury?

Look it up in the certifier's public database (NSF, WQA, IAPMO or CSA) under the exact model, and check that mercury is in its list of reduction claims (usually under NSF/ANSI 53). "Tested to NSF standards" in an ad is not the same as a listing.