Water is an essential utility, and all homes come with a water source. But not all tap and well water sources are created equal, and in fact many parts of the country only have access to hard water or water sources with contaminants. That’s where water treatment companies can help to clean your water, making it safe to drink and more palatable overall.
There are a few types of water treatment systems, each using a different method to achieve clean and filtered water. Disinfection methods might add chlorination or use ultra violet light to remove contaminants from water. Filtration systems often use active carbon filters to remove these contaminants. Then there are systems that use reverse osmosis or distillation. Reverse osmosis works by using pressure to send clean water through a membrane, leaving contaminants behind. Distillation uses evaporation to separate water from harmful contaminants.
We’ve found the top 10 water treatment companies to help in your search. We did this by going over their websites and diving deep into customer and third-party reviews to bring you the best information. We also considered whether the company was certified by The National Sanitation Foundation (NSF) and the American National Standards Institute (ANSI) to meet national drinking water standards.
Below is a list of the top ten companies ranked in order of how they fared in our review process.
Best Companies at a Glance
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- No electricity required for operation
- Dual-tank design allows for continuous water supply even during regeneration cycles
- 10-year warranty for parts on most systems
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- Treatment system addresses hardness, chlorine, and impurities
- Lifetime warranty options available
- Highly rated customer support
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- Free in-home water tests
- Affordable for a range of budgets
- Limited lifetime warranties available
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- 5-10 year warranties on various systems
- Offers whole home and countertop/under-sink models
- Prices available on website
Top 10 Water Treatment Companies
Kinetico Water Systems
- Average Cost: $1,000 to $7,000
What We Love
Kinetico’s innovative non-electric water treatment systems offer peace of mind with their efficient operation and customizable solutions tailored to individual water quality needs. In business since 1970, they offer several types of reverse osmosis water treatment and filtration systems for the whole home.
Cost Information
Prices vary for Kinetico water treatment systems based on the system’s size, features, and any additional components required for installation. However, the long-term savings in terms of reduced maintenance and extended appliance lifespan often justify the initial investment. In general, these products range from $1,000 to upwards of $7,000, depending on the model you choose. Keep in mind, these systems require professional installation for a separate fee.
Best Model
The Kinetico Premier XP series uses two tanks for uninterrupted water supply. One tank remains at the ready with filtered water while the other is either on standby or regenerating. That means you won’t run out of water even if you’re showering while the dishwasher and washing machine are running.
RainSoft
- Average Cost: $2,000 to $6,000
What We Love
RainSoft’s water softeners work using electricity to power a salt-based ion exchange process, which treats all of the water coming into your home from your local source. Their separate water filtration systems work to remove contaminants such as lead using a carbon filter. The company has been in business since 1953 and has a longstanding reputation.
Cost Information
RainSoft doesn’t disclose its pricing on its website, but the company does offer a free in-home water test. In general, buyers report spending an average of $2,000 to $6,000 on their water treatment solutions, which often require professional installation.
Best Model
The CleanStart laundry system uses only cold water to clean your clothing, saving you money on energy costs to heat water and on products such as fabric softeners. The system works by oxidizing your tap water and injecting ozone (O3) into the water to disinfect your laundry. Many users report having to use less detergent as a result, and the system allows you to clean clothes of all colors together while reducing the contaminants you might otherwise release into waste water.
Leaf Home Water Solutions
- Average Cost: $1,500 to $4,000
What We Love
Leaf Home Water Solutions offers whole-home water treatment systems that soften, filter and condition your water using reverse osmosis and UV lights. Leaf Home Water Solutions is a relatively new company which launched in 2021 under Leaf Home Solutions, which began in 2005. The company also operates Leaf Home Safety Solutions, offering products such as walk-in tubs and chair-lifts, which allow seniors to age in place.
Cost Information
Leaf Home Water Solutions is one of the more affordable whole home water treatment system companies on our list. Their competitive pricing also includes models with various features, which can increase the overall price of your system.
Best Model
The UV System Defense disinfects your water without the use of chemicals, protecting you against viruses and bacteria. This system uses ultraviolet light to clean both city and well water while reducing rust, sand, dirt and other particulates.
Aquasana
- Average Cost: $300 to $2,500
What We Love
In business since 1997, this Texas-based company boasts high removals of contaminants from water, resulting in better tasting drinking water and better performance for appliances such as your washing machine and dishwasher. Aquasana also makes it easy to keep your filter in good working order with automatic shipments of its replacement filters right to your door with its Water for Life® program which offers discounts and free shipping.
Cost Information
Aquasana offers a range of products addressing everything from the whole home to just your drinking water with under-the-sink and countertop models. Therefore, their products range in price with very affordable options for just a few hundred dollars to whole-home solutions that reach upwards of $2,500. These costs will range depending on the features you’re after. The company occasionally has sales on its site as well.
Best Model
The Rhino Max Flow whole house water treatment system removes contaminants and up to 97% of chlorine from your water, improving the taste of the water you drink and the food you cook. The system comes with instructions for installation and assembly as well, which can save money on professional installation. It’s highly rated to perform for larger homes, provided filtered water at a high flow rate.
Pentair
- Average Cost: $500 to $3,000+
What We Love
In business since 1966, the company also prioritizes giving back through its Project Safewater initiative which helps to provide clean drinking water to communities in India, Honduras, and Kenya. The company originally focused on manufacturing high-altitude balloons but eventually settled on water treatment systems in 2004
Cost Information
Because Pentair offers both whole home and sink filtration systems in addition to its pool and spa offerings, its price range varies widely. Whole home systems can cost several thousand dollars while simple, tankless under sink options start at just $500.
Best Model
The OMNIFilter QuickConnect Tankless RO is a great water filtration solution if you lack the space or budget for a whole home system. This filter system is installed underneath your sink and requires regular replacement of its filter to provide a steady source of filtered drinking water to your home. The system also has built-in leak detection for peace of mind.
Culligan Water
- Average Cost: $500 to $2,500+
What We Love
In business since 1936, Culligan Water Systems has become a household name in water filtration here in the U.S. The company began in Illinois and now has operations in 90 countries. That longstanding reputation makes it easy to rely on a trusted brand when deciding between companies for your water filtration needs.
Cost Information
Culligan offers whole home reverse osmosis treatment systems as well as systems limited to drinking water. They range in price from $500 to more than $2,500 and the company offers way to finance your purchase or rent systems, depending on your needs.
Best Model
The Culligan High-Efficiency (HE) Water Softener is a top choice for many homeowners looking to remove hard water minerals from their water source. The model promises to make laundry brighter and reduce energy costs. It uses salt to operate, but this model uses less salt than less efficient softeners.
Brita
- Average Cost: $20 to $6,000
What We Love
Brita not only offers personal water pitchers for filtered drinking water, they also sell whole home water systems, under sink reverse osmosis systems and home water softener systems.
Cost Information
Because Brita offers everything from small refrigerator filter systems to whole home options, their cost will range much more significantly compared to competitors. While their pitchers can cost just $20, their undersink drinking water options are upwards of $500 and can increase with additional features. Finally, their whole home systems can cost as much as $6,000 installed.
Best Model
The Brita PRO Under-Sink Reverse Osmosis System is a perfect combination of Brita’s personalized products such as their fridge pitchers and their whole home solutions. This sleek system installs out of sight in your kitchen while only addressing water quality at the tap for cooking and drinking. It uses a filtration system and state-of-the-art reverse osmosis to treat your water.
Aqua Pure
- Average Cost: $200 to $800
What We Love
Like most of the contenders on this list, Aqua-Pure is certified by The National Sanitation Foundation (NSF) and the American National Standards Institute (ANSI) to remove what are called aesthetic impurities from your water, making it more palatable and less cloudy.
Cost Information
Considered one of the more affordable brands, Aqua-Pure offers whole home systems ranging in price from $200 to $800 with bonus features that will add to the overall price. Replace filters cost as much as $200 each and will be required at least annually.
Best Model
The Aqua-Pure AP903 Whole House Water Filtration System is known for its efficient removal of sediment, chlorine taste, and odor from the local water supply. With its durable stainless steel construction and high-flow rate capabilities, it’s an ideal choice for providing clean water throughout the home.
Hague Quality Water
- Average Cost: $1,000 to $5,000
What We Love
In business since 1960, Hague Quality Water International began in the US but now has operations in 50 countries. With a longstanding reputation for quality, Hague offers a range of solutions aimed at improving your home’s water with its patented designs.
Cost Information
At the higher end of the scale financially, Hague water systems start at about $1,000 and go up to $5,000, making them a premier product.
Best Model
The Hague WaterMax® Water Softener + Filter is highly regarded for its efficiency in removing hardness minerals from water while also providing excellent water quality throughout the home. It’s a compact system that promises to remove bad odors, cloudiness and discoloration from your water while making your skin and hair smoother and your dishes cleaner.
Aquasure
- Average Cost: $300 to $1,500
What We Love
Looking to target a specific water problem in your home? Aquasure manufactures filtered shower heads so you can just focus on improving your at-home sauna experience with less hard water and fewer hard water stains. It’s an affordable solution that gets right to the point.
Cost Information
Aquasure offers relatively affordable whole home filtration solutions ranging from $300 to $1,500 and up depending on premium features. The company also offers payment plans to ease the upfront cost.
Best Model
The Aquasure Harmony Series whole house water filtration system removes a range of contaminants while maintaining high water flow rates throughout the home. The system promises to improve the look and taste of water by removing PFAs, TDS, micro-plastics, chlorine, heavy metals, VOCs, odors, sediments, and more.
