Head-to-head

PUR PLUS Faucet Mount Filter vs Culligan FM-25 Faucet Filter vs Brita Faucet Mount System

PUR PLUS faucet mount water filter installed on a kitchen faucet

PUR PLUS Faucet Mount Filter

9.4 $35

Culligan FM-25 chrome faucet mount water filter installed on a kitchen faucet

Culligan FM-25 Faucet Filter

8.6 $25

Brita faucet mount water filter system installed on a kitchen faucet

Brita Faucet Mount System

8.8 $32.49

Verdict

PUR PLUS Faucet Mo

The safe all-rounder. Most clip-ons only handle taste, but the PUR PLUS is also certified for lead under NSF 53 and clips on tool-free. Cartridges last only 2-3 months and it won't fit pull-down faucets, but for certified taste-and-lead at the tap, it's the default.

Culligan FM-25 Fau

The budget pick that keeps the cert. The cheapest filter here still NSF 53 certified for lead, plus mercury and even cysts like giardia that most faucet filters miss. Flow is slow and there's no indicator, but for certified lead reduction without spending much, nothing beats it.

Brita Faucet Mount

The renter's pick. It clips on in two minutes, pops off when you move, and beats its taste-only reputation: NSF 42/53/401 certified, including 99% of lead. It fits standard faucets only and cartridges are short-lived, but for certified water with no plumbing, it's the easy call.

Best for

PUR PLUS Faucet Mo

Most households on city water who want certified lead and chlorine reduction at the tap without plumbing or a pitcher to refill.

Culligan FM-25 Fau

Budget buyers who still want certified lead reduction: the cheapest filter here that keeps NSF/ANSI 53 lead certification rather than dropping to taste-only.

Brita Faucet Mount

Renters and taste-first buyers who want quick, no-tools filtered water and care most about chlorine taste and odor.

Avoid if

PUR PLUS Faucet Mo

You have a pull-down, pull-out, or non-standard faucet — clip-on filters won't fit, and an under-sink system is the better path.

Culligan FM-25 Fau

You push a lot of water daily — its cartridge life is shorter than the Waterdrop's, so heavy users may pay more per year despite the low sticker price.

Brita Faucet Mount

you have a pull-down, pull-out, or touchless faucet (clip-ons fit standard faucets only), or you want long filter life, since the cartridges last only a few months and run a bit pricier than rivals.

Score breakdown

fit

PUR PLUS F

9.4

Culligan F

8.6

Brita Fauc

8.8

ease

PUR PLUS F

9.2

Culligan F

8.8

Brita Fauc

9.1

value

PUR PLUS F

9.1

Culligan F

9.3

Brita Fauc

8.9

quality

PUR PLUS F

9.2

Culligan F

8.4

Brita Fauc

8.5

Specs

type

Faucet-mount filter (standard faucets)

media

Mineral Core (carbon + ion exchange + minerals)

—

price

~$35

~$25

~$34

install

Tool-free; on/off diverter; not for pull-out/touchless

Tool-free; auto-reset diverter; not for pull-out/spray

Tool-free, no-drill; on/off switch; 3 spray options

reduces

~70 substances: lead, mercury, chlorine, microplastics, some pesticides

Chlorine, lead, mercury, cysts (giardia/crypto), turbidity, atrazine, lindane

60+ incl chlorine, lead, asbestos, benzene, microplastics

indicator

Filter-change light

—

Filter-change light

filter life

~100 gallons / ~2-3 months

~200 gallons / ~2 months (FM-25R cartridge)

~100 gallons / ~3-4 months

certifications

NSF/ANSI 42 (taste) + 53 (lead); horizontal adds 401

NSF/ANSI 42 (taste) + 53 (lead, mercury, cysts)

NSF/ANSI 42, 53 (99% lead), and 401

flow

—

Slow (~0.5 GPM)

—

build

—

Chrome-plated plastic; 2-yr warranty; no indicator light

—

fit

—

Standard faucets only (not pull-out/spray/touchless)

Buy →Buy →Buy →

	PUR PLUS Faucet Mount Filter	Culligan FM-25 Faucet Filter	Brita Faucet Mount System
Score	9.4	8.6	8.8
Price	$35	$25	$32.49
Verdict	The safe all-rounder. Most clip-ons only handle taste, but the PUR PLUS is also certified for lead under NSF 53 and clips on tool-free. Cartridges last only 2-3 months and it won't fit pull-down faucets, but for certified taste-and-lead at the tap, it's the default.	The budget pick that keeps the cert. The cheapest filter here still NSF 53 certified for lead, plus mercury and even cysts like giardia that most faucet filters miss. Flow is slow and there's no indicator, but for certified lead reduction without spending much, nothing beats it.	The renter's pick. It clips on in two minutes, pops off when you move, and beats its taste-only reputation: NSF 42/53/401 certified, including 99% of lead. It fits standard faucets only and cartridges are short-lived, but for certified water with no plumbing, it's the easy call.
Best for	Most households on city water who want certified lead and chlorine reduction at the tap without plumbing or a pitcher to refill.	Budget buyers who still want certified lead reduction: the cheapest filter here that keeps NSF/ANSI 53 lead certification rather than dropping to taste-only.	Renters and taste-first buyers who want quick, no-tools filtered water and care most about chlorine taste and odor.
Avoid if	You have a pull-down, pull-out, or non-standard faucet — clip-on filters won't fit, and an under-sink system is the better path.	You push a lot of water daily — its cartridge life is shorter than the Waterdrop's, so heavy users may pay more per year despite the low sticker price.	you have a pull-down, pull-out, or touchless faucet (clip-ons fit standard faucets only), or you want long filter life, since the cartridges last only a few months and run a bit pricier than rivals.
Score breakdown
fit	9.4	8.6	8.8
ease	9.2	8.8	9.1
value	9.1	9.3	8.9
quality	9.2	8.4	8.5
Specs
type	Faucet-mount filter (standard faucets)	Faucet-mount filter (standard faucets)	Faucet-mount filter (standard faucets)
media	Mineral Core (carbon + ion exchange + minerals)	—	—
price	~$35	~$25	~$34
install	Tool-free; on/off diverter; not for pull-out/touchless	Tool-free; auto-reset diverter; not for pull-out/spray	Tool-free, no-drill; on/off switch; 3 spray options
reduces	~70 substances: lead, mercury, chlorine, microplastics, some pesticides	Chlorine, lead, mercury, cysts (giardia/crypto), turbidity, atrazine, lindane	60+ incl chlorine, lead, asbestos, benzene, microplastics
indicator	Filter-change light	—	Filter-change light
filter life	~100 gallons / ~2-3 months	~200 gallons / ~2 months (FM-25R cartridge)	~100 gallons / ~3-4 months
certifications	NSF/ANSI 42 (taste) + 53 (lead); horizontal adds 401	NSF/ANSI 42 (taste) + 53 (lead, mercury, cysts)	NSF/ANSI 42, 53 (99% lead), and 401
flow	—	Slow (~0.5 GPM)	—
build	—	Chrome-plated plastic; 2-yr warranty; no indicator light	—
fit	—	—	Standard faucets only (not pull-out/spray/touchless)
	Buy →	Buy →	Buy →

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