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10 Best Whole House Water Filtration Systems 2025 in the United States
#1
Winner
Aquasana Whole House Water Filter System | 1,000,000 Gallons | Salt-Free Softener Alternative | UV, Carbon & KDF | Tackles up to 99.99% Chlorine, Bacteria, Viruses, Sediment & Scale | EQ-1000-AST-UV
The Aquasana Whole House Water Filter System (EQ-1000-AST-UV) is designed to provide cleaner, healthier water from every tap in your home. It uses a multi-stage filtration process—including carbon, KDF, UV light, and salt-free scale control—to reduce up to 99.99% of chlorine, bacteria, viruses, sediment, and scale buildup. This means it not only improves taste and safety but also protects your pipes and appliances. The system is especially suitable for homes with moderate water hardness (under 15 grains per gallon), making it a good fit for many households of 4 or more.
Rating
9.8
Chosen by1,485
Type of Contaminants
Filter Lifespan and Maintenance
Most important from
1645 reviews
#2
iSpring Whole House Water Filter System, Reduces Lead, Scale, Chlorine, Chloramine, 3-Stage Whole House Water Filtration System, Model: WGB32B-KDS
The iSpring Whole House Water Filter System (WGB32B-KDS) offers robust protection against various contaminants, making it a solid choice for ensuring cleaner water throughout your home. With its three-stage filtration process, it effectively reduces scale, PFAS, lead, chlorine, chloramine, hydrogen sulfide, and heavy metals. The system boasts a high flow rate of up to 15 gallons per minute, which ensures minimal impact on your water pressure. It also features a reputable build, meeting NSF/ANSI standards, and has a filter lifespan capable of handling up to 250,000 gallons of water per year for a household of four, which is quite impressive.
Rating
9.6
Type of Contaminants
Flow Rate
Filter Lifespan and Maintenance
Most important from
3586 reviews
#3
Aquasure Harmony Series 48,000 Grains Whole House Water Softener w/High Efficiency Digital Metered Control Head (48,000 Grains)
The Aquasure Harmony Series 48,000 Grains Whole House Water Softener is designed to meet the needs of homes with 3-4 bathrooms, making it ideal for medium to large households. One of its major strengths is its ability to treat hard water effectively by removing harmful minerals like calcium and magnesium, which can irritate skin and clog plumbing. Additionally, the triple purpose sediment/carbon/zinc pre-filter significantly enhances water quality by eliminating up to 99% of common contaminants, including chlorine, VOCs, and heavy metals. This not only helps protect your health but also prolongs the lifespan of your appliances, reducing maintenance costs over time.
Rating
9.4
Type of Contaminants
Filter Lifespan and Maintenance
System Size and Installation
Most important from
2881 reviews
Top 10 Best Whole House Water Filtration Systems 2025 in the United States
#1
Winner
Aquasana Whole House Water Filter System | 1,000,000 Gallons | Salt-Free Softener Alternative | UV, Carbon & KDF | Tackles up to 99.99% Chlorine, Bacteria, Viruses, Sediment & Scale | EQ-1000-AST-UV
Aquasana Whole House Water Filter System | 1,000,000 Gallons | Salt-Free Softener Alternative | UV, Carbon & KDF | Tackles up to 99.99% Chlorine, Bacteria, Viruses, Sediment & Scale | EQ-1000-AST-UV
Type of Contaminants: chlorine, bacteria, viruses, sediment, scale
Flow Rate: optimized for large households, no pressure drop
Filter Lifespan and Maintenance: treats 1 million gallons, 10 years
System Size and Installation: plumbing installation
Additional Features: multi-stage carbon, KDF, UV, salt-free scale
Chosen by 1485 this week
iSpring Whole House Water Filter System, Reduces Lead, Scale, Chlorine, Chloramine, 3-Stage Whole House Water Filtration System, Model: WGB32B-KDS
iSpring Whole House Water Filter System, Reduces Lead, Scale, Chlorine, Chloramine, 3-Stage Whole House Water Filtration System, Model: WGB32B-KDS
Type of Contaminants: scale, PFAS, lead, chlorine, chloramine
Flow Rate: 15 GPM
Filter Lifespan and Maintenance: 250,000 gallons/year
System Size and Installation: 24.5 x 8 x 28 inches
Certifications and Standards: NSF/ANSI standards
Additional Features: anti-scale, 1-inch NPT, 1-year warranty
Aquasure Harmony Series 48,000 Grains Whole House Water Softener w/High Efficiency Digital Metered Control Head (48,000 Grains)
Aquasure Harmony Series 48,000 Grains Whole House Water Softener w/High Efficiency Digital Metered Control Head (48,000 Grains)
Type of Contaminants: calcium, magnesium, chlorine, VOCs, heavy metals
Flow Rate: 12 Gallons Per Minute
System Size and Installation: 12 x 12 x 56 inches, 120 pounds
Additional Features: Programmable, automatic digital control head
iSpring Whole House Water Filter System, Highly Reduces Sediment, Taste, Odor, and up to 99% Chlorine, 3-Stage w/ 20-Inch Sediment and Carbon Block Filters, Model: WGB32B, 1" Inlet/Outlet
iSpring Whole House Water Filter System, Highly Reduces Sediment, Taste, Odor, and up to 99% Chlorine, 3-Stage w/ 20-Inch Sediment and Carbon Block Filters, Model: WGB32B, 1" Inlet/Outlet
Type of Contaminants: sediment, taste, odor, chlorine
Flow Rate: 15 GPM
Filter Lifespan and Maintenance: 100,000 gallons or one year
System Size and Installation: 24.25 x 7.75 x 27.75 inches
Certifications and Standards: NSF/ANSI standards
Additional Features: Tankless, 1-inch NPT connections
Related Products
Up to 19% off
Express Water Whole House Water Filter System | Ultimate Protection | 3 Stage Water Purifier Whole Home, Heavy Metal + Anti-Scale Filters, High Reduction in Scale, Chlorine, PFAs, Lead, Arsenic & more
Express Water Whole House Water Filter System | Ultimate Protection | 3 Stage Water Purifier Whole Home, Heavy Metal + Anti-Scale Filters, High Reduction in Scale, Chlorine, PFAs, Lead, Arsenic & more
Type of Contaminants: impurities, chlorine, chloramine, lead, arsenic
Flow Rate: 17 Gallons Per Minute
Filter Lifespan and Maintenance: 100,000 gallons, quick-change cartridges
System Size and Installation: 29 x 8.5 x 30 inches, 66 pounds
Additional Features: 50-micron reusable spin-down sediment filter
iSpring Whole House Water Filter System, Reduces Iron, Manganese, Chlorine, Sediment, Taste, and Odor, 3-Stage Iron Filter Whole House, Model: WGB32BM
iSpring Whole House Water Filter System, Reduces Iron, Manganese, Chlorine, Sediment, Taste, and Odor, 3-Stage Iron Filter Whole House, Model: WGB32BM
Type of Contaminants: iron, manganese, chlorine, sediment, rust
Flow Rate: 15 GPM
Filter Lifespan and Maintenance: 100,000 gallons, about a year
System Size and Installation: 24.25 x 7.75 x 27.75 inches
Certifications and Standards: NSF/ANSI standards
Additional Features: Tankless, 1-year warranty, lifetime support
3M Aqua-Pure Whole House Sanitary Quick Change Water Filter System AP904, Reduces Sediment, Chlorine Taste and Odor, and Scale, Heavy Duty, 100,000 Gallon
3M Aqua-Pure Whole House Sanitary Quick Change Water Filter System AP904, Reduces Sediment, Chlorine Taste and Odor, and Scale, Heavy Duty, 100,000 Gallon
Type of Contaminants: sediment, chlorine taste, odor, scale
Flow Rate: 20 Gallons Per Minute
Filter Lifespan and Maintenance: 100,000 gallons, SQC design
System Size and Installation: 4.5 x 4.5 x 25.2 inches
Additional Features: Heavy Duty
Aquasana Whole House Well Water Filter | 500,000 Gallons | UV, Carbon & KDF | Salt-Free Softener Alternative | Tackles up to 99.99% Chlorine, Bacteria, Viruses, Cysts & Scale | Rhino WH-WELL-CT-UV
Aquasana Whole House Well Water Filter | 500,000 Gallons | UV, Carbon & KDF | Salt-Free Softener Alternative | Tackles up to 99.99% Chlorine, Bacteria, Viruses, Cysts & Scale | Rhino WH-WELL-CT-UV
Type of Contaminants: Bacteria, viruses, chlorine
Flow Rate: 14.6 GPM
Filter Lifespan and Maintenance: Change filters every 2 months
System Size and Installation: 57 x 11 x 57 inches
Additional Features: UV Disinfection, Chlorine Reduction
#10
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Buying Guide for the Best Whole House Water Filtration Systems
Choosing the right whole-house water filtration system is crucial for ensuring that your entire household has access to clean, safe, and great-tasting water. A whole-house water filtration system is installed at the point where the main water line enters your home, ensuring that all the water you use for drinking, cooking, bathing, and cleaning is filtered. To make an informed decision, you need to understand the key specifications and how they relate to your specific needs. Here are the main factors to consider when selecting a whole-house water filtration system.Type of ContaminantsDifferent water filtration systems are designed to remove different types of contaminants, such as chlorine, sediment, heavy metals, bacteria, and viruses. It's important to know what contaminants are present in your water supply. You can get your water tested to identify these contaminants. Once you know what needs to be removed, you can choose a system that targets those specific impurities. For example, if your water has high levels of chlorine, a system with activated carbon filters would be effective.
Flow RateThe flow rate of a water filtration system is measured in gallons per minute (GPM) and indicates how much water can be filtered at a time. This is important because it affects the water pressure in your home. A higher flow rate is necessary for larger households with multiple bathrooms and high water usage. For a small household, a flow rate of 10-15 GPM might be sufficient, while larger homes may require 20-25 GPM or more to ensure adequate water pressure.
Filter Lifespan and MaintenanceThe lifespan of the filters in a water filtration system varies depending on the type of filter and the amount of water used. Some filters need to be replaced every few months, while others can last for several years. It's important to consider how often you'll need to replace the filters and the cost associated with it. Systems with longer-lasting filters may have a higher upfront cost but can be more economical in the long run. Choose a system with a maintenance schedule that fits your lifestyle and budget.
System Size and InstallationThe size of the water filtration system and the complexity of the installation process are important factors to consider. Some systems are compact and easy to install, while others may require professional installation and more space. Consider where you will install the system and whether you have the necessary space and plumbing skills. If you're not comfortable with DIY installation, you may need to factor in the cost of professional installation.
Certifications and StandardsLook for water filtration systems that are certified by reputable organizations such as NSF International. These certifications ensure that the system has been tested and meets specific standards for contaminant removal and performance. Choosing a certified system gives you confidence that the product will effectively filter your water and provide the health benefits you expect. Check the certification labels and read reviews to ensure the system meets your needs.
Additional FeaturesSome water filtration systems come with additional features such as UV purification, water softening, or smart monitoring. UV purification can be useful for eliminating bacteria and viruses, while water softening can help reduce scale buildup in your pipes and appliances. Smart monitoring features can alert you when it's time to replace filters or if there are any issues with the system. Consider which additional features are important to you and whether they justify the extra cost.