Head-to-head

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

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

Culligan FM-25 Faucet Filter

8.6 $25

PUR PLUS faucet mount water filter installed on a kitchen faucet

PUR PLUS Faucet Mount Filter

9.4 $35

Brita faucet mount water filter system installed on a kitchen faucet

Brita Faucet Mount System

8.8 $32.49

Verdict

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.

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.

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

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.

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.

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

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.

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.

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

Culligan F

8.6

PUR PLUS F

9.4

Brita Fauc

8.8

ease

Culligan F

8.8

PUR PLUS F

9.2

Brita Fauc

9.1

value

Culligan F

9.3

PUR PLUS F

9.1

Brita Fauc

8.9

quality

Culligan F

8.4

PUR PLUS F

9.2

Brita Fauc

8.5

Specs

flow

Slow (~0.5 GPM)

—

type

Faucet-mount filter (standard faucets)

build

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

—

price

~$25

~$35

~$34

install

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

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

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

reduces

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

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

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

filter life

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

~100 gallons / ~2-3 months

~100 gallons / ~3-4 months

certifications

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

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

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

media

—

Mineral Core (carbon + ion exchange + minerals)

—

indicator

—

Filter-change light

fit

—

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

Buy →Buy →Buy →

	Culligan FM-25 Faucet Filter	PUR PLUS Faucet Mount Filter	Brita Faucet Mount System
Score	8.6	9.4	8.8
Price	$25	$35	$32.49
Verdict	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 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 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	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.	Most households on city water who want certified lead and chlorine reduction at the tap without plumbing or a pitcher to refill.	Renters and taste-first buyers who want quick, no-tools filtered water and care most about chlorine taste and odor.
Avoid if	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 non-standard faucet — clip-on filters won't fit, and an under-sink system is the better path.	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	8.6	9.4	8.8
ease	8.8	9.2	9.1
value	9.3	9.1	8.9
quality	8.4	9.2	8.5
Specs
flow	Slow (~0.5 GPM)	—	—
type	Faucet-mount filter (standard faucets)	Faucet-mount filter (standard faucets)	Faucet-mount filter (standard faucets)
build	Chrome-plated plastic; 2-yr warranty; no indicator light	—	—
price	~$25	~$35	~$34
install	Tool-free; auto-reset diverter; not for pull-out/spray	Tool-free; on/off diverter; not for pull-out/touchless	Tool-free, no-drill; on/off switch; 3 spray options
reduces	Chlorine, lead, mercury, cysts (giardia/crypto), turbidity, atrazine, lindane	~70 substances: lead, mercury, chlorine, microplastics, some pesticides	60+ incl chlorine, lead, asbestos, benzene, microplastics
filter life	~200 gallons / ~2 months (FM-25R cartridge)	~100 gallons / ~2-3 months	~100 gallons / ~3-4 months
certifications	NSF/ANSI 42 (taste) + 53 (lead, mercury, cysts)	NSF/ANSI 42 (taste) + 53 (lead); horizontal adds 401	NSF/ANSI 42, 53 (99% lead), and 401
media	—	Mineral Core (carbon + ion exchange + minerals)	—
indicator	—	Filter-change light	Filter-change light
fit	—	—	Standard faucets only (not pull-out/spray/touchless)
	Buy →	Buy →	Buy →

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