Find the right water treatment for your home
Water problems aren’t always solved by adding another filter. The right treatment depends on your water source, what’s in your water, how you use it, and what you want to improve.
FlixWater helps you understand those choices — from identifying the problem to choosing the right treatment and, when needed, the right product.
Start with the water you have
Every homeowner has a different water source and a different set of concerns.
City water
Municipal water is already treated, but you may still want to improve taste, odor, chlorine, sediment, or drinking-water quality.
See Common Problems Learn About City WaterWell water
Private wells can have multiple treatment needs, including hardness, iron, sediment, odor, pH, and other water-quality concerns.
See Common Problems Learn About Well WaterOther water sources
Rainwater, lake or spring water, stored water, and other non-municipal sources can come with different water-quality concerns.
Learn About Rainwater Learn About Surface WaterWhat Water Problem Are You Trying to Address?
The best water treatment depends on the actual problem. A filter that clears sediment may do nothing to water hardness, and a softener isn’t built to treat unpleasant odor.
Hard water & scale
White scale on fixtures and appliances, spots on glass, increased consumption of laundry detergents, and reduced water heater performance are signs of water hardness.
See treatment options Learn About Water HardnessSediment & particles
Sand, dirt, rust particles, or cloudy water can indicate sediment in the water. You may notice particles settling in containers, collecting around fixtures, or making the water look visibly cloudy.
See treatment options Learn About Water SedimentIron & rust stains
Orange, brown, or rust-colored stains on fixtures, laundry, or plumbing can indicate iron in the water. Different forms and levels of iron can cause different problems.
See treatment options Learn About Iron in WaterBad taste & odor
Chlorine, sulfur odors, or other changes in taste and smell can indicate a water-quality problem. The specific taste or odor can provide clues about what may be affecting the water.
See treatment options Learn About Water TasteBacteria & microbial
Water from private wells, springs, lakes, rainwater, or storage tanks can have microbial concerns that are not apparent through appearance, taste, or odor alone. Testing may be needed.
See treatment options Learn About Bacteria in WaterOther problems
Some water problems are not obvious from appearance, taste, or odor. Changes in pH, color, or specific contaminants may require testing to identify what is affecting the water.
See treatment options Learn About Other ProblemsWhat kind of treatment does your water actually need?
Not every water problem needs the same kind of treatment – and not every home needs a whole house treatment system.
- A sediment filter reduces suspended particles.
- A carbon filter can address certain tastes, odors, and chlorine.
- A water softener addresses hardness.
- Reverse osmosis provides more extensive drinking-water treatment.
- Other conditions may need specialized treatment.
The goal isn’t to treat everything — it’s to treat what needs to be treated.
Choose the treatment that matches the problem
Once you understand the problem, the next question is which type of treatment can actually address it.
Sediment filtration
Sediment filtration uses porous filter media with different pore sizes, typically around 1–50 microns, to physically trap suspended particles such as sand, dirt, and rust, while also helping protect downstream treatment stages from sediment.
See Treatment Systems Learn About Sediment FiltrationCarbon filtration
Carbon filtration uses activated carbon with a highly porous surface to adsorb certain chemicals from water, commonly reducing chlorine, unpleasant tastes, and odors, depending on the carbon type and water conditions.
See Treatment Systems Learn About Carbon FiltrationWater softening
Water softening uses resin media to exchange calcium and magnesium ions for sodium ions, reducing hardness minerals in water that cause scale and helping laundry detergent work more effectively.
See Treatment Systems Learn About Water SofteningReverse osmosis
Reverse osmosis uses pressure to push water through a semipermeable membrane that allows water molecules to pass while rejecting many dissolved salts, minerals, and other contaminants, making it suitable for more extensive treatment of drinking and cooking water.
See Treatment Systems Learn About Reverse OsmosisUV disinfection
UV disinfection uses ultraviolet light to inactivate bacteria, viruses, and other microorganisms as water passes through the treatment chamber, providing microbial control without adding chemicals and often serving as one stage of a broader treatment system.
See Treatment Systems Learn About UV TreatmentSpecialized treatment
Specialized treatment uses targeted treatment media or processes selected for specific water chemistry, such as iron, manganese, sulfur, low pH, nitrate, and other conditions that cannot be adequately addressed by standard treatment methods.
See Treatment Systems Learn About Specialized FiltrationOne filter, or a complete treatment system?
A treatment system isn’t simply a collection of filters. Each stage should have a reason for being there, and the overall system should match your water source, water problems, and how you use the water.
The goal isn’t to build the biggest system. It’s to build the right one.
The actual configuration depends on your water source, water quality, household needs, flow requirements, and treatment goals.
One-Stage Treatment, or a Complete System?
Some homes need only one treatment step. Others need several — with each stage addressing a different water problem, protecting the treatment that follows, or serving a specific use in the home.
Water Source
Your system starts with the water entering your home: municipal water, private well water, or another source such as rainwater, spring water, lake water, or stored water. The source helps determine what problems need to be checked before choosing treatment.
Learn About Water SourcesSediment Prefiltration
This stage is typically used when the incoming water may contain larger particles such as sand, dirt, rust, or other debris, especially with well water or other less-controlled sources. It is placed early in the system to remove larger sediment and protect the treatment stages that follow.
See The Products Check If You Need ItFine Sediment Filtration
When smaller particles remain after initial sediment removal, a finer filtration stage can be added before more sensitive treatment equipment or point-of-use systems. This is useful when visible or fine sediment continues to affect the water or downstream components.
See The Products Check If You Need ItWater Softening
When testing or known water conditions show that hardness is a problem, a softener can be added to the whole-house treatment line. It treats the water before it reaches fixtures, appliances, laundry, and other uses throughout the home, whether the source is municipal or well water.
See The Products Check If You Need ItSpecialized Treatment
When testing identifies a problem that standard filtration or softening does not address, a dedicated treatment stage can be added to the main water line. Depending on the water chemistry, this may include treatment for iron, manganese, sulfur, low pH, nitrate, or another specific concern.
See The Products Check If You Need ItWhole-House Carbon Filtration
When the goal is to improve water throughout the home for chlorine, certain tastes and odors, or other compounds that the selected carbon media can address, carbon filtration can be added to the whole-house line. Its position depends on what other treatment stages are needed and what the carbon stage is intended to accomplish.
See The Products Check If You Need ItWater for Different Uses
After the main whole-house treatment stages, the water reaches different parts of the home for different purposes. Some uses may need no additional treatment, while others may need a dedicated point-of-use stage based on the water quality and what you want that water to do.
See The Products Learn About Water UsesDrinking & cooking
Drinking and cooking often have the most specific water-quality requirements, so a separate point-of-use system may be added at the kitchen or another drinking-water point. Depending on the source and remaining concerns, this may include fine sediment, carbon, reverse osmosis, UV, or other finishing stages.
See The Products Learn About Drinking & Cooking WaterBathing & showering
If the main treatment system does not address a concern that matters specifically at the shower, an additional point-of-use stage may be considered. The appropriate approach depends on whether the concern is chlorine, hardness, sediment, or another water-quality issue.
See The Products Learn About Bathing WaterLaundry & washing
If hardness, iron, sediment, chlorine, or another water condition is affecting cleaning, staining, or appliance use, the whole-house treatment system may need to address that condition before water reaches the laundry and washing areas.
See The Products Learn About Laudry & Washing WaterGardening & outdoor use
Outdoor water may not need the same treatment as indoor water. Depending on the source and the intended use, treatment may be unnecessary or may be considered for conditions that could affect plants, soil, irrigation equipment, or other outdoor applications.
See The Products Learn About Gardening WaterAquarium & specialized uses
Aquariums and other specialized uses can have water requirements that are very different from normal household use. Additional treatment may be needed when the source water does not match the water chemistry required for the species or application.
See The Products Learn About Aquarium WaterOther uses
Other water uses should be treated according to their specific purpose rather than automatically receiving the same treatment as drinking or whole-house water. The required stage depends on the water quality, application, and conditions that need to be controlled.
See The Products Learn About Other Water UsesYou don’t always need to treat the whole house
Sometimes the best solution is targeted. If your main goal is better drinking and cooking water, treating the kitchen may make more sense than treating every gallon entering the home. If your concern is scale throughout the house, point-of-use filtration alone won’t address the underlying problem.
“Which filter should I buy?”
“Which water needs to be treated, and where?”
Ready to choose a product?
Once you know what you’re trying to treat, product selection becomes much easier. FlixWater helps you compare products based on what actually matters for the job:
- What the product is designed to treat
- Where it belongs in a treatment system
- Flow rate and capacity
- Filter type and micron rating
- Maintenance and replacement requirements
- Installation requirements
- What the product does — and doesn’t — solve
Looking for a specific treatment?
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Sediment Filters
Sediment filtration products usually come as replaceable filter cartridges, often installed inside a filter housing. A typical setup is a single housing with an inlet, outlet, and removable cartridge, making it one of the simpler treatment components to replace or install.
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Carbon Filters
Carbon products range from simple replaceable cartridges to larger whole-house carbon tanks. Smaller cartridge systems can often be installed in a standard housing, while larger tank-style systems are usually installed as a dedicated treatment unit.
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Water Softeners
A water softener is a larger treatment system rather than a simple filter cartridge. Most residential units include a resin tank, a separate brine tank, control valve, and plumbing connections, and installation may require more space and professional plumbing.
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Reverse Osmosis Systems
An RO system is usually a compact multi-stage unit installed under a sink or at another point of use. It commonly includes several filter cartridges, an RO membrane, a storage tank, tubing, a faucet, and related fittings.
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UV Water Purifiers
UV systems are typically a single treatment chamber containing a UV lamp and sleeve, with inlet and outlet connections and an electrical power supply. They are usually installed as part of a larger water-treatment line rather than as a standalone cartridge.
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Specialty Water Treatment
Specialty treatment products vary widely depending on the water problem. They may be a replaceable cartridge, a media tank, a chemical injection system, or another dedicated treatment unit, so the physical setup can range from a simple component to a professionally installed system.
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Whole-house water filters
Whole-house filters are typically installed on the main water line entering the home. They may consist of one or more filter housings with replaceable cartridges, or a larger tank-style system, depending on the treatment being provided.
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Under-Sink & Countertop Filters
Under-sink systems are compact units installed below the kitchen sink and connected to the water supply, while countertop systems sit beside the sink and usually require much less installation. Both can range from a single cartridge to a small multi-stage system.
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Shower Filters
Shower filters are small point-of-use devices installed between the shower pipe and showerhead, or built into the showerhead itself. Most are simple single-stage units with a replaceable cartridge and can usually be installed without a plumber.
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Understand before you buy
Water treatment can get complicated fast — different products can look similar while solving very different problems. FlixWater breaks the decision into smaller questions.
Understand your water
What’s your water source? What are you experiencing? What should you test?
Choose the treatment
What treatment can address the problem? What can’t it address?
Plan the system
Do you need one component or several? Where should each one go?
Choose the product
Once you know the treatment you need, compare products by the job they perform.
Explore productsWater treatment should make sense
Understand the water. Identify what needs treatment. Choose the treatment that fits. Then choose the product. FlixWater helps you make those decisions with clarity.