Under-Sink & Countertop Filtration Systems
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Good DealVitapur Quick-Connect Carbon Block Filter for PQC1FS and P1QC7506BLS$6.36Save $24.10Used - Amazon.comTypically:$30.46Save $24.10MSRP:$31.87Save $25.51 - Good Deal
Good DealKOHLER 77685-NA Aquifer Single Cartridge Water Filtration System$38.37Save $82.95Used - Amazon.comTypically:$121.32Save $82.95MSRP:$222.97Save $184.60 - Good Deal
Good DealAPEC Tankless RO Water Filter System ROTL-AIO - Four-in-One Premium Reverse Osmosis Water Filtration, 2:1 Pure to Drain, Filters Fluoride, Heavy Metals, 1K+ Impurities, Easy DIY Install & Care$104.28Save $205.15Used - Amazon.comTypically:$309.43Save $205.15MSRP:$299.99Save $195.71 - Good Deal
Good DealiSpring US21B High Capacity Under Sink Water Filter System with Upgraded Hoses, Removes PFAS, PFOA/PFOS, Chlorine, Iron, Lead, Odor and More, 15GPM Fast Flow$70.99Save $114.78Used - Amazon.comTypically:$185.77Save $114.78MSRP:$223.99Save $153.00 
3M Aqua-Pure Under Sink Water Filter System AP200, Full Flow$54.39Save $87.62Used - Amazon.comTypically:$142.01Save $87.62MSRP:$165.37Save $110.98
Culligan US-600A Undersink opaque housing, D-20A cartridge included$30.10Save $9.31Online - Home DepotTypically:$39.41Save $9.31MSRP:$34.99Save $4.89
APEC Water Systems RO-QUICK90 Ultimate Supreme Compact Size with Quick Connect Easy Change Filters Undersink Reverse Osmosis System$105.12Save $148.96Used - Amazon.comTypically:$254.08Save $148.96MSRP:$249.95Save $144.83
GE 5-Stage Reverse Osmosis Under Sink Water Filtration System with Faucet | Reduces 95+ Impurities including Lead, Chlorine, Arsenic | Filters FQ18PN, FQ18MN, FQ18RT | GXRV40TBN$108.33Save $124.30Used - Amazon.comTypically:$232.63Save $124.30MSRP:$216.98Save $108.65
Culligan US Change Sink Drinking Water System with Dedicated Faucet and Premium Filter, EZ-4 (Best Filtration), Chrome$38.13Save $47.59Used - Amazon.comTypically:$85.72Save $47.59MSRP:$79.99Save $41.86
iSpring Gravity-Fed Stainless Steel Countertop Water Filter System with Black Wood Base,3.17 Gallons with 2 Activated Carbon Water Filters,Chlorine Reduction,Portable Water Filter for Home and Party$96.49Save $119.38Used - Amazon.comTypically:$215.87Save $119.38
InSinkErator Instant Hot Water Tank, 2/3 Gallon Stainless Steel Tank, HWT-00$163.44Save $147.65Used - Amazon.comTypically:$311.09Save $147.65MSRP:$550.19Save $386.75
Aqua Pure AP141T Whole House Water Filter Complete System$51.74Save $158.83Used - Amazon.comTypically:$210.57Save $158.83
ANCHOR WATER FILTERS Premium 7-Stage Counter Top Water Filtration System in White$54.59Save $12.02Online - Home DepotTypically:$66.61Save $12.02MSRP:$89.99Save $35.40
KRAUS Purita 2-Stage Under-Sink Filtration System with Single Handle Drinking Water Filter Faucet in Brushed Brass, FS-1000-FF-104BB$75.51Save $196.76Used - Amazon.comTypically:$272.27Save $196.76MSRP:$272.27Save $196.76
Dreo Reverse Osmosis Water Filter Countertop, 7-Stage RO Water Filtration System, 3:1 Pure to Drain, Portable Water Pitchers for Home Kitchen, No Installation, Reduce TDS, BPA Free$218.99Save $39.09Online - Amazon.comTypically:$258.08Save $39.09MSRP:$299.99Save $81.00
CULLIGAN US-2 US-2-R 2Stage Drink WTR System, 13.58 x 10.23 x 4.52, White$43.85Save $70.45Used - Amazon.comTypically:$114.30Save $70.45MSRP:$153.45Save $109.60
PureDrop PDR-3CUW 0.01μm Ultra-Filtration Under Sink Water Filter System, Tankless 3-Stage Compact Undersink Water Filtration with Faucet, Removes Chlorine, Bad Taste & Odor, No Waste Water$97.61Save $15.40Online - Amazon.comTypically:$113.01Save $15.40MSRP:$116.20Save $18.59
PRO+AQUA Whole House Salt-Free Water Softener Conditioner with ELITE 3-Stage Heavy Metal Odor Filtration System, High Flow 20 GPM$2,351.01Save $350.95Online - Home DepotTypically:$2,701.96Save $350.95MSRP:$2,815.56Save $464.55
PureDrop PDR-100RO Under Sink 3-Stage Reverse Osmosis Drinking Water Filtration System, High Capacity 100 GPD Fast Flow, Tankless$178.50Save $26.21Online - Home DepotTypically:$204.71Save $26.21MSRP:$210.00Save $31.50
ANCHOR WATER FILTERS Ultra Series 6-Stage Alkaline Mineral Reverse Osmosis Water Purification System - Under Sink Water Filter - 75 GPD$191.98Save $28.00Online - Home DepotTypically:$219.98Save $28.00MSRP:$249.99Save $58.01
KRAUS Britt Pull-Down Single Handle Filter Kitchen Faucet in Matte Black with Purita Under-Sink Filtration System$376.01Save $53.94Online - Home DepotTypically:$429.95Save $53.94MSRP:$429.95Save $53.94
Culligan Carbon Block Replacement Premium Filtration Water Filter Cartridge$39.99Save $2.95Online - Home DepotTypically:$42.94Save $2.95MSRP:$46.99Save $7.00
ISPRING 4.5 in. x 20 in Anti Scale Whole House Water Filtration System with Premium Scale Inhibitor, Blue$269.80Save $32.08Online - Home DepotTypically:$301.88Save $32.08MSRP:$344.99Save $75.19
Culligan US Change Under-Sink Drinking Water System with Dedicated Faucet and Filter, EZ-1 (Good Filtration), Chrome$30.00Save $22.06Used - Amazon.comTypically:$52.06Save $22.06MSRP:$85.25Save $55.25
iSpring US15L-PB Water Filter System with MetSorb® Media, Reduces Lead, Arsenic, Chlorine, Bad Taste & Odor, Heavy Metals, Under Counter Water Filter Direct Connect to Kitchen Faucet, 15,000 Gallons$36.69Save $30.29Used - Amazon.comTypically:$66.98Save $30.29MSRP:$75.99Save $39.30
PureDrop PDR-50WSP Spin Down Sediment Filter, Reusable Whole House Sediment Water Filter for Well Water with Scraper, 50-Micron$41.65Save $3.61Online - Home DepotTypically:$45.26Save $3.61MSRP:$49.00Save $7.35
ISPRING UV Ultraviolet Water Filter with Smart Flow Sensor Switch, 11W UV lamp$111.30Save $4.78Online - Home DepotTypically:$116.08Save $4.78MSRP:$29.99
PureDrop PDR-ARB50WSP Whole House Spin Down Sediment Water Filter, Auto Flushing, Touch-Screen, Reusable w/Scraper, 50-Micron$154.94Save $13.18Online - Home DepotTypically:$168.12Save $13.18MSRP:$180.00Save $25.06
ISPRING 6-Stage Under Sink Reverse Osmosis Drinking Water Filtration System with Booster Pump and UV Filter, 100GPD$338.40Save $25.07Online - Home DepotTypically:$363.47Save $25.07MSRP:$419.99Save $81.59
KRAUS Oletto Pull-Down Single Handle Filter Kitchen Faucet in Spot-Free Antique Champagne Bronze with Filtration System$419.95Save $30.00Online - Home DepotTypically:$449.95Save $30.00MSRP:$449.95Save $30.00
ISPRING NSF-Certified 200-Micron Jumbo Auto-Flush Spin Down Sediment Water Filter, 1 in. MNPT and 3/4 in. FNPT$295.63Save $20.85Online - Home DepotTypically:$316.48Save $20.85MSRP:$328.48Save $32.85
ANCHOR WATER FILTERS Sediment Water Filter Cartridge for Reverse Osmosis Water Filtration Systems$8.24Save $0.52Online - Home DepotTypically:$8.76Save $0.52MSRP:$14.99Save $6.75
ukoke Tankless Under Sink Reverse Osmosis Water Filtration System, 600 GPD, 2:1 Pure to Drain Ratio PFAS and TDS Reduction$316.27Save $19.59Online - Home DepotTypically:$335.86Save $19.59MSRP:$398.98Save $82.71
ISPRING 3-Stage Whole House Water Filter System, Sediment, Iron, Hydrogen Sulfide, PFAS, Lead, Chlorine, Chloramine, Manganese$520.00Save $28.64Online - Home DepotTypically:$548.64Save $28.64MSRP:$579.99Save $59.99- Best Seller
Best SellerAquasana Under Sink Water Filter System - Reduces PFAS, Lead, & Chlorine in Drinking Water - Under Counter Claryum Filtration for Kitchen - 2-Stage - Chrome Faucet - AQ-5200.56$124.99Save $1.16Online - Amazon.comTypically:$126.15Save $1.16MSRP:$199.99Save $75.00 
ISPRING Gravity-Fed Countertop Water Filter System, Dark Wood Base, 3.17 Gal. Chlorine Reduction, Portable$188.04Save $8.39Online - Home DepotTypically:$196.43Save $8.39MSRP:$218.49Save $30.45
AQUA TRU AquaTru Reverse Osmosis Counter Top Water Filtration System with BPA Free Clean Water Tank$449.00Online - Home DepotTypically:$449.00MSRP:$449.00
ISPRING Whole House Water Filter Replacement Sediment 2 Carbon Block Cartridges Fits WCB32C and WCB32O$50.67Online - Home DepotTypically:$50.66MSRP:$75.99Save $25.32
ISPRING WGB21B-KS 2-Stage Whole House Water Filtration System Sediment CTO Filter KDF Plus GAC filter Chlorine, Iron, Lead Odor$169.46Save $6.47Online - Home DepotTypically:$175.93Save $6.47MSRP:$188.29Save $18.83
Global Water Bluline G5 Counter Top Hot and Cold Bottleless Water Cooler with 3-Stage Filtration$492.00Save $13.98Online - Home DepotTypically:$505.98Save $13.98MSRP:$692.75Save $200.75
InSinkErator Instant Hot & Cold Water Dispenser 6-Month Premium Water Filtration System$134.00Online - Home DepotTypically:$130.71MSRP:$207.35Save $73.35
Home Master HydroPerfection Under Sink Reverse Osmosis System$424.96Save $10.30Online - Home DepotTypically:$435.26Save $10.30MSRP:$499.95Save $74.99
ISPRING NSF-Certified 500-Micron Jumbo Auto-Flush Spin Down Sediment Water Filter, 1 in. MNPT and 3/4 in. FNPT$319.52Online - Home DepotTypically:$313.96MSRP:$345.99Save $26.47
KRAUS Purita 2-Stage Under Sink Water Filtration System with Digital Display Monitor$176.35Save $3.06Online - Home DepotTypically:$179.41Save $3.06MSRP:$179.94Save $3.59
APEC Water Systems Ultimate Electric Pumped Undersink Reverse Osmosis Water Filtration System 50 GPD for Low Pressure Home 0-30 psi 120V US$385.08Save $6.54Online - Home DepotTypically:$391.62Save $6.54MSRP:$399.95Save $14.87
KRAUS Purita 2-Stage Under-Sink Filtration System with Single Handle Filter Faucet in Spot-Free Stainless Steel$249.95Online - Home DepotMSRP:$249.95
Express Water Reverse Osmosis 5 Stage Water Filtration System - with Faucet and Tank - 100 GPD$207.80Save $2.19Online - Home DepotTypically:$209.99Save $2.19MSRP:$209.99Save $2.19
ISPRING NSF-Certified 50-Micron Jumbo Auto-Flush Spin Down Sediment Water Filter w/ Bypass, 1 in. MNPT and 3/4 in. FNPT$347.39Online - Home DepotTypically:$336.44MSRP:$318.17
Home Master HydroPerfection Loaded Under Sink Reverse Osmosis Water Filter System$530.04Save $3.05Online - Home DepotTypically:$533.09Save $3.05MSRP:$592.95Save $62.91
ISPRING NSF-Certified 100-Micron Jumbo Auto-Flush Anti Scale Spin Down Sediment Water Filter, 1 in. MNPT and 3/4 in. FNPT$365.82Save $1.50Online - Home DepotTypically:$367.32Save $1.50MSRP:$379.99Save $14.17
ISPRING Countertop Multi Filtration Drinking Water Filter Dispenser in White$63.99Save $0.15Online - Home DepotTypically:$64.14Save $0.15
3M Aqua-Pure 3M FF100 Under Sink Drinking and Cooking Water Filter System, Reduces Lead, Microplastics, Chlorine Taste and Odor, Cysts, Select VOCs. 2.5 GPM Full Flow$264.45Online - Amazon.comTypically:$254.51MSRP:$429.99Save $165.54
ISPRING Tankless High Output Versatile Portable Countertop Reverse Osmosis Drinking Water Filtration System, 600 GPD$268.03Save $0.01Online - Home DepotTypically:$268.04Save $0.01MSRP:$315.34Save $47.31
APEC Water Systems Ultimate Alkaline Counter Top Reverse Osmosis Water Filter System with Case 90 GPD 4-Stage Portable Installation-Free$256.99Online - Home DepotTypically:$256.99MSRP:$278.99Save $22.00
EcoPure Water Purifier Under Sink Replacement Filter Set (Fits System ECOP40)$123.15Online - Home DepotTypically:$123.15
ISPRING Tankless Reverse Osmosis Water Filtration System, 600 GPD Fast Flow, Oil Rubbed Black Faucet, 2.5: 1 Pure to Drain Ratio$383.65Online - Home DepotTypically:$383.65MSRP:$383.65
American Valve ScaleRx Home Whole House Water Filtration System for Scale Reduction$215.00Online - Home DepotTypically:$215.00MSRP:$215.00
Elkay WaterSentry Under Sink Replacement Filters Microplastics Certified Reduction Replacement Filter$83.41Online - Home DepotTypically:$83.41MSRP:$92.88Save $9.47