Waterdrop AS13 Stainless Steel Under-Sink Water Filter

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Product guide

Waterdrop AS13 Stainless Steel Under-Sink Water Filter

The Waterdrop AS13 is a manual under-sink filter with a stainless-steel housing, intended to connect to an existing tap without drilling. Its listing claims chlorine and PFAS-family reduction, but filter replacement and the varying water-quality feedback are important considerations.

At a glance

Listing claims NSF/ANSI 42 certification for reducing chlorine, taste and odour, and NSF/ANSI 372 certification for lead-free materials.
The manufacturer also claims reduction of PFAS and PFOA/PFOS. These claims are not independent performance verification.
The listing describes plug-and-twist installation without drilling and connection to the original tap.
The manufacturer says the system does not lower TDS because it adds minerals to the water.

Price

£63.99Save 20%

Reference price: ~~£79.99~~

Price checked: 14 Nov 2026

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Often bought together

Waterdrop WF13 Filter, Replacement for Waterdrop AS13 Water Filter System | NSF/ANSI 42 Certified, 6-Stage Filtration, Reduces PFOA/PFOS, Lead, Chlorine, No Drilling Required

£34.99

Pros and cons

Pros

Under-sink format connects to an existing tap, so the listing does not require a separate filter tap or drilling.
Stainless-steel housing and manual operation mean no powered supply is specified.
The listed 16,000-gallon capacity and 12-month filter-life figure provide planning references, though actual replacement timing may vary with use.

Cons

Customer feedback includes reports that the housing is difficult or impossible to open for filter changes, a relevant concern for ongoing maintenance.
Water-quality experiences are mixed, with some customers reporting cloudy water despite other reports of improved taste.

Technical specifications

15 specifications

Identity
Brand	Waterdrop
Model	AS13

Operation and filtration
Power configuration	Manual Operation
Purification method	Activated Carbon, Carbon Block
Listed capacity	16000 gallons
Listed filter life	12 Months
Maximum flow rate	1.6 Gallons Per Minute
Maximum supported water TDS level	500

Dimensions and installation
Installation type	Under Sink
Dimensions listed	8.9L x 8.9W x 28H centimetres

Materials
Material listed	Stainless Steel

Operating limits and availability
Lower temperature range	41 Degrees Fahrenheit
Upper temperature rating	130 Degrees Fahrenheit
Product shelf life	365 Days
EU spare part availability duration	1 Years

What to know before buying

Listing details to confirm

Customer accounts praise installation ease and taste, but also describe filter-housing access difficulties and inconsistent water-quality results. The listing's no-drill plug-and-twist installation claim does not establish that filter replacement is easy. It also gives a six-stage filtration highlight and a 5+1-stage description, so the exact stage count is inconsistent. The 16,000-gallon capacity and 12-month filter-life claims are separate listing figures, not a guaranteed service interval.

What’s in the box

Included

System ×1
Hoses ×2
3/8"–1/2" converter set ×1
Mounting screws ×1
Teflon tape ×1

Who is it for?

A good fit for

Households wanting an under-sink filter that the listing says connects to an existing tap without drilling.
Buyers seeking the manufacturer's stated chlorine, taste and odour reduction claims and willing to check the applicable certification details.

Less suited to

Buyers who need independently confirmed contaminant-reduction performance or consistently clear-water outcomes.
Anyone who needs straightforward, trouble-free access to the filter for routine replacement.

Waterdrop AS13 Stainless Steel Under-Sink Water Filter · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 820 ratings

5 stars72%72%
4 stars11%11%
3 stars5%5%
2 stars6%6%
1 star6%6%

Customer feedback reports positive experiences with installation, perceived build quality, taste and value, including accounts of less unusual smell or taste. However, customers also describe difficulty opening or removing the filter housing for changes, and water-quality experiences are mixed, including reports of persistent cloudiness. For buyers relying on this under-sink system, maintenance access matters alongside the listed 12-month filter-life claim, while taste reports do not establish contaminant-reduction performance.

Positive themes

Customers describe installation as easy and report improved taste.
Some customers praise perceived quality and value.

Negative themes

Customers report difficulty opening or removing the housing to replace the filter.

Mixed feedback

Water-quality feedback includes both improvement and reports of water remaining cloudy.

Frequently asked questions

Does the Waterdrop AS13 lower TDS?

The listing says it does not lower TDS because the system adds minerals. It lists a supported water TDS maximum of 500, which is not a claim that it reduces TDS.

Does installation require drilling or a separate tap?

The listing describes plug-and-twist, no-drill installation and connection to the original tap. Confirm that your plumbing connections are compatible before purchase.

How often does the filter need replacing?

The listing states a 12-month filter life and 16,000-gallon capacity. These are separate manufacturer claims and should not be treated as a guaranteed replacement schedule.

Is it easy to replace the filter?

Customer feedback includes reports of difficulty opening or removing the housing to change the filter. Consider this maintenance concern before choosing the system.