10 bestWhole House Water Treatment Systemsof October 2025
112M consumers helped this year.
1
Express Water RO5DX Reverse Osmosis Filtration NSF Certified 5 Stage RO System with Faucet and Tank – Under Sink Water Plus 4 Filters – 50 GPD, 14 x 15 x 5, White
Express Water
9.9
14% off
2
Geekpure 2 Stage Whole House Water Filter System with 20 Inch Blue Housing - 4.5"x 20" PP + Carbon
Geekpure
9.8
3
Aquasure Harmony Series 48,000 Grains Whole House Water Softener w/High Efficiency Digital Metered Control Head (48,000 Grains)
Aquasure
9.7
4
iSpring WGB32B 3-Stage Whole House Water Filter System w/ 20-Inch Sediment and Carbon Block Filters
iSpring
9.5
6% off
5
iSpring UVF55FS Whole House UV Water Filter with Smart Flow Sensor Switch, 55W, 12 GPM
iSpring
9.3
OtherUp to 26% off
Waterdrop 17UA 3 Years Under Sink Water Filter System-Reduces Lead, Chlorine, Bad Taste & Odor-Under Counter Water Filter Direct Connect to Kitchen Faucet-NSF/ANSI 42 Certified-24000 Gallons-USA Tech
Waterdrop 15UA Under Sink Water Filter System, Reduces Lead, Chlorine, Bad Taste & Odor, Under Counter Water Filter Direct Connect to Kitchen Faucet, NSF/ANSI 42 Certified, 16000 Gallons, USA Tech
Waterdrop Reverse Osmosis System, Tankless RO Water Filtration System, 800 GPD Fast Flow, 3:1 Pure to Drain, LED Purifier, Smart Faucet, TDS Reduction, Commercial and Household Usage, G3P800
Waterdrop G3P600 Reverse Osmosis System, NSF/ANSI 58 & 372 Certified, Tankless RO Water Filter System, Under Sink RO System, TDS Reduction, 600 GPD, Smart LED Faucet, FCC Listed, USA Tech
7% off
6
VIQUA VH200 Home Stainless Steel Ultraviolet Water System - 9 GPM 35W
Viqua
9.1
7
Express Water Incorporated WH300SCGS Whole House Water Filter – 3 Stage Home Filtration, 23.5" x 8.5" x 30"
Express Water
8.8
8
RainFresh MEGA8BR Whole House UV System
RainFresh
8.6
9
Geekpure 12 GPM UV Water System (55 Watt) for Whole House - with Extra 2 UV Filter + 2 Quartz Sleeve
Geekpure
8.4
10
Whole House Well Water Filtration System Filters Iron, Sulfur, Arsenic, Manganese & More - 1" Digital Valve, 1 CuFt
PRO+AQUA
8.1
More products we considered
Up to 6% off
Waterdrop TSA 3-Stage Under Sink Water Filter, Water Filtration System Under Sink System, Direct Connect to Home Faucet, NSF/ANSI 42 Certified Element, USA Tech
Waterdrop TSU 0.01μm Ultra-Filtration Under Sink Water Filter System, 3-Stage High Capacity, USA Tech, Smart Panel, No Waste Water, 2 Years Lifetime
Waterdrop Whole House Water Filter System, with Carbon Filter and Sediment Filter, 5-Stage Filtration, Highly Reduce Lead, Chlorine, Odor and Taste, 2-Stage 5 Micron WD-WHF21-PG, 1" Inlet/Outlet
Waterdrop Reverse Osmosis System, Instant Hot Water Dispenser, 600 GPD, Reduce PFAS, Tankless, 2:1 Pure to Drain, Under Sink, TDS Reduction, Smart LED Faucet, Hot and Cold Water Dispenser Faucet
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