#1 Home Improvement Retailer

Cart

Cart

Home
Plumbing
Water Filters
Under Sink Water Filters
Under Sink Water Filter Systems

Under Sink Water Filter Systems

APEC Water Systems

APEC Water Systems

GE

GE

Waterdrop

Waterdrop

NSF Certified

NSF Certified

Inline

Inline

Faucet

Faucet

Shop Savings

Shop Savings

184 Results
Filters
Filters
Clear All

Get It Fast

caret-icon

Department

caret-icon
Under Sink Water Filter Systems

Review Rating

caret-icon
54 & Up3 & Up2 & Up1 & Up0

Brand

caret-icon

Price

caret-icon
to

Connection Type

caret-icon

Filtration Method

caret-icon

Number of Stages

caret-icon

Includes

caret-icon

Reduces

caret-icon

House Hold Size

caret-icon

Features

caret-icon

Filter Life (Months)

caret-icon

    Sort by

    Top Sellers
Under Sink Dual Stage Water Filtration System with Faucet
(3.6 / 182)
Model# GXK255TBN
$129.00
Under Sink 5 Stage Premium Reverse Osmosis Water Filtration System
(3.1 / 201)
Model# GXRV40TBN
$249.00
Best Seller
G3P600 8-Stage NSF Certified Reverse Osmosis Water Filtration System, Under-Sink Water Filter, Extra CF Filter
(4.5 / 46)
Model# B-WD-G3P600-CFSET
Limit 20 per order
$439.00
Was $627.99
Save $188.99 (30%)
Best Seller
Reverse Osmosis Water Filtration System 800GPD Tankless 3-Stage Under-Sink with UV Sterilizer 1 Extra CF Filter
(4.9 / 19)
Model# B-WD-G3P800-CFSET
Limit 291 per order
$749.00
Was $1,027.99
Save $278.99 (27%)
Essence Premium Quality 5-Stage Under-Sink Reverse Osmosis Drinking Water Filter SystemEssence Premium Quality 5-Stage Under-Sink Reverse Osmosis Drinking Water Filter System
(4.7 / 1844)
Model# ROES-50
$199.95
NSF-Certified 6-Stage Reverse Osmosis System w/ Alkaline Remineralization, Reduces PFAS, Fluoride, Chromium, Lead, TDSNSF-Certified 6-Stage Reverse Osmosis System w/ Alkaline Remineralization, Reduces PFAS, Fluoride, Chromium, Lead, TDS
(4.8 / 835)
Model# RCC7AK
$239.99
X12 Alkaline pH+RO System, NSF/ANSI 58 and 372 Certified, 11-Stage, Includes 3 WD-F2 and 1 WD-F1A Filters, 2-Year Supply
(3 / 8)
Model# B-WD-X12-3F2F1
Limit 20 per order
$1,068.99
Was $1,419.99
Save $351.00 (25%)
Clarifi Tankless 6-Stage Under-Sink Reverse Osmosis Water Filtration System
(4.6 / 20)
Model# DWQ1001012
$699.30
Essence Premium Quality 75 GPD pH+ Alkaline Mineral Under-Sink Reverse Osmosis Drinking Water Filter System
(4.7 / 752)
Model# ROES-PH75
$229.95
Essence Series Top Tier 5-Stage Under-Sink Reverse Osmosis Water Filtration System Extra Replacement Pre-Filter Set
(4.7 / 1693)
Model# ROES-50X
$219.99
Ultimate Premium Quality Fast Flow 90 GPD Under-Sink Reverse Osmosis Drinking Water Filter System
(4.8 / 495)
Model# RO-Hi
$281.95
Reverse Osmosis 5 Stage Water Filtration System - NSF Certified - Faucet, Tank and 4 Filters - 50 GPD
(4.7 / 338)
Model# RO5DX
$169.99