Best water filter for hard water

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If you’re like most people, you probably don’t give much thought to the quality of your water beyond whether it’s cold or not. But if you live in an area with hard water, using a water filter is a smart idea – especially if you have a home appliance that needs filtered water to operate properly. In this blog post, we’ll take a look at the best water filters for hard water and discuss what to consider when making your purchase. So read on to learn more! 

Our Top Picks 


What is Hard Water? 

Hard water is usually defined as: 

Water with a high mineral content and a specific gravity greater than 1.0. 

Hard water has a high mineral content and a specific gravity greater than 1.0. It is caused by the presence of dissolved minerals that include calcium and magnesium in addition to some bicarbonates. Hardness is not a health concern but does make it more difficult to form a lather and cleanse yourself if you’re washing in hard water. 

Most of the dissolved minerals come from weathered rocks, soils and sediments that contain calcium, magnesium and bicarbonates (or carbonates). Rainwater picks up these elements as it falls through the atmosphere. Rocks such as limestone and chalk also contribute to the hardness of water. 

Hard water tends to build up scale in pipes and can damage household appliances such as dishwashers and washing machines. It can also reduce the efficiency of home boilers, which heat water using gas or oil. This leads to higher energy bills. 

Why do you need a filter for hard water? 

Hard water has many problems that we don’t think about every day. It can clog your pipes and heaters and leave mineral deposits on surfaces like your hair and skin. Hard water is responsible for: 

  • Build up soap scum and lime scale (on dishes and inside appliances), dulling of clothes. 
  • Dry or itchy skin and hair. 
  • Clogging water pipes, hot water heaters, coffee makers, dishwashers and washing machines. 

A filter for hard water can help you eliminate all these problems by reducing the mineral content in your drinking water. You can then use that filtered water for whatever you need, whether it’s making coffee or cooking. You can also use that filtered hard water to wash your dishes and clothes without worrying about building up. 

A filter for hard water will turn ordinary water into soft water by removing the calcium and magnesium ions present in it. This makes household chores easier, as soaps work better on soft water. Soft water also creates a natural barrier against bacteria and germs, so you can rest assured your family is safe from potential illnesses. 

A filter for hard water will last you for up to six months or 40,000 gallons worth of filtered water. It saves you money in the long run because it reduces maintenance costs on appliances like washing machines and dishwashers. But it will also save you money on laundry detergent and dish soap because these won’t have to work as hard in soft water. 

What are the various types of water filters available to remove the hardness of water? 

There are three main types of home filter systems used to remove minerals from your home’s drinking water supply. Each type works in different ways and has its own benefits and disadvantages. 

  • Carbon-based filters are the most common type, and they use activated carbon to remove organic substances from water. They have a slim profile and can be installed under the sink or even attached directly to your faucet. 
  • Reverse osmosis (RO) systems are more expensive than other types of water filters, but they remove far more contaminants, including heavy metals and salts. 
  • Distillation systems vaporize water, collecting the steam in a separate chamber. This steam is then condensed to form distilled water, which is free of most contaminants. Distillation systems are very effective at removing dissolved solids from water but have a high operating cost because they waste a large amount of water during the purification process. 

How to use water filters? 

There are various types of water filter systems available in the market and deciding which one is best for your home can be a challenge.  

The first step should always be to get your water tested by a local lab that will tell you exactly what contaminants are present and at what levels. You should also find out from your local water authority what the acceptable levels are, as some contaminants may not be a concern for you but may be against regulations. 

Once you have that information, you will know which type of filter is best suited to treat the specific problems in your water. If filters are rated on a scale of PPM removal efficiency, look for ones that score at least 90-95%.  

It’s also important to consider the lifespan of a filter. If it needs to be replaced every couple of months, that will certainly add up to cost over time. 

Do water filters remove significant amounts of minerals from drinking water? 

Filters should remove particles down to 1 micron or smaller. This includes most dirt, minerals and metals. The number of contaminants removed will depend on the type of filter you use.  

Carbon filters are generally good at removing organic compounds, while Reverse Osmosis (RO) systems remove 90-99% of total dissolved solids. Distillation water filters are not designed to treat your entire water supply, but they can be useful for treating individual drinking water sources. 

Best Water Filter For Hard Water

Pure drinking water is a necessity that can be met with an adequate water filtration system. Water filters for hard water supply are equipped with various technologies that remove all toxins from the water and render it safe for consumption. Several of them can enhance the flavor of the water. 

1. Best Overall Water Filter For Hard Water: Brita Basic Faucet Water Filter System

Fitting standard kitchen sink faucets, the Brita Basic Faucet Filtration System is a water faucet filter with a filter change reminder. The system provides an easy and convenient method for filtering water; it simply screws onto your faucet, requires no installation tools, and can be used as needed. 

This faucet water filter can remove 60 contaminants from tap water, including 99% lead, asbestos, chlorine taste and odor, and benzene. The filter can provide up to 100 gallons of tap water, roughly equivalent to two to three months of use. The filter has an additional layer that traps more significant sediment, allowing it to function more efficiently and for longer. 

The central filter unit protects the filter from dust and other airborne particles by holding it in place. It has a convenient status indicator that informs you when it is time to replace the filter. The Brita faucet filter is BPA-free and can filter tap water for up to three months, removing contaminants such as lead, chlorine, and asbestos. It can be replaced by removing it from the original filter housing and replacing it with a new filter. 

The Brita basic faucet filter includes an assortment of adapters for connecting the system to non-standard faucets. While this should help most users successfully attach their filters, if you have a non-standard faucet, you should contact the manufacturer to inquire about compatibility. 

Key Features 
  • This complete Brita faucet water filter attaches to your standard faucet making tap water cleaner* and great-tasting; filtration system is easy to install; no tools required 
  • Get great-tasting water without the waste; by switching to Brita, you can save money and replace 1800 single-use water bottles** per year 
  • The space efficient design attaches directly to your faucet to give you a choice of 3 convenient spray options for everyday needs – filtered water, unfiltered water and unfiltered spray; Available in white and includes an electronic filter indicator for easy replacement reminders; Height 4.86″; Width 4.69″; Depth 2.26″; Weight .84 pounds 
  • Reduce 99% of lead, chlorine (taste and odor), asbestos, particulates, Benzene, and more; a helpful status indicator lets you know when to replace the filter with an easy 1-click filter replacement 
  • Replace your faucet mount water filter every 100 gallons or approximately every 4 months to keep water tasting great; this tap water filter fits standard faucets only, does not fit pull-out or spray style faucets 
  • NSF-certified to remove chlorine and lead
  • Filter change reminder to alert you when filter needs changing
  • Simple, 10-minute installation
  • Doesn’t reduce chlorine
  • Doesn’t entirely reduce all contaminants (you’ll need a reverse osmosis system for that)
  • Prone to leaking and breaking

2. Best Whole House Water Filter for hard water: Express Water Heavy Metal Whole House Water Filter

Express Water Heavy Metal Whole House Water Filter – 3 Stage Whole House Water Filtration System – Sediment, KDF, Carbon Filters – Includes Pressure Gauges, Easy Release, and 1” Inch Connections


Suppose you’re looking for a whole-house water filtration system that eliminates sediments, toxins, chemicals, living organisms, odors, and tastes from the water you drink, cook with, and bathe in. In that case, you’re in the right place. The Express Water Heavy Metal Whole House Water Filter is a low-maintenance, simple, and effective whole house water filter that leaves your water clean, clear, and contaminant-free. 

The Heavy Metal Whole House Water Filter from Express Water is for homeowners who desire cleaner water. If you want to filter the city’s water again, or if you get your water from a well, this whole-house water filtration system will do the trick. 

The Express Water Heavy Metal Whole House Water Filter includes a sediment filter, a KDF filter, and activated carbon in its three-stage filtration system. 

You also receive a freestanding frame, which you may choose to mount. In addition, standard 1″ connections facilitate installation. The Express Water Heavy Metal Whole House Water Filter is, in our opinion, an excellent option to consider. It is inexpensive and straightforward to install and maintain. It is durable, has a good warranty, and will remove virtually all contaminants from your drinking, cooking, and bathing water. 

Key Features 
  • Whole House Water Filter: Reduce harmful impurities and dangerous heavy metals from your entire home’s water with Express Water’s 3 Stage Heavy Metal Water Filtration System. Heavy Metal Water Filter: Drink the healthiest water on Earth as your home water filter reduces over 80 different impurities from your water 
  • Express Water’s water filtration systems are ready to install with 1” inch standard connections. Easy to Replace Water Filter Cartridges: All Express Water whole house water filter replacement cartridges are designed for quick and easy replacement to keep your system up and running. 
  • Durable Whole House Water Filter: Express Water Whole Home Water Filtration Systems are constructed with standing stainless-steel frames for long term durability and quality. 
  • On Demand Support: Support from experts who can answer any of your questions about your new home water filter. Quality Guaranteed: Rest easy with our 1-year warranty on all Express Water Whole Home Water Systems 
  • Amazing three-stage filtration
  • Removes over 80 chemicals and compounds
  • Durable design
  • Easy installation
  • Frame can be mounted or freestanding
  • Simple maintenance
  • Does not reduce TDS
  • Gauges can be a little off

3. Best Water Filter Pitcher for hard water: ZeroWater ZP-006-4, 6 Cup 5-Stage Water Filter Pitcher

ZeroWater ZP-006-4, 6 Cup 5-Stage Water Filter Pitcher,NSF Certified to Reduce Lead, Other Heavy Metals and PFOA/PFOS, White and Blue

ZeroWater is an excellent water filtration system. It provides five stages of Ion Exchange technology, as opposed to the standard two stages of filtration. 

A filter that can remove up to 99.6% of TDS from tap water, such as Zinc, Aluminum, Fluoride, Nitrate, and others, will provide you with clean, pure, and delicious water. 

This filter’s water only satisfies the FDA’s TDS requirements for uncontaminated water. The filter removes lead and other heavy metals, such as Chromium 3 and 6, from the water. NSF certification has been awarded to filtered water. 

The pitcher holds six cups and saves space in your home. Since every filter includes a water testing meter that measures the dissolved solids in your water, you will typically be aware of when it is time to replace it. 

Key Features 
  • Filtered Water Pitcher: The 6 Cup 5-stage Water Filtration Pitcher suits your active lifestyle, with its space-saving design it is perfect fit for compact or small refrigerators 
  • Premium 5 Stage Filtration: Removes 99 percent of total dissolved solids (TDS) for the purest tasting water; TDS are organic and inorganic materials such as pesticides, metals including lead and mercury, minerals, salts, and ions. 
  • NSF certified and BPA free: The Only Pour Through Filter NSF Certified to Reduce Lead, Chromium and PFOA/PFOS; All material is BPA free 
  • Including: 6-cup Water Pitcher, 1 ZeroWater Ion Exchange Filter and a Free TDS Meter 
  • Eco-Friendly: Save up to 150 single-use plastic bottles per filter or up to 2100 bottles a year while enjoying the purest tasting water 
  • Place saving design
  • Has TDS indicator which lights up if the time comes to change.
  • Free from BPA
  • 5 stage filtration eliminates 99.6% of mixed solids
  • Filter pitcher certified by NSF to remove both Chromium and Lead.
  • Nothing serious

4. Best Value water filter for hard water:  APEC Water Systems ROES-50 Essence Series

APEC Water Systems ROES-50 Essence Series Top Tier 5-Stage Certified Ultra Safe Reverse Osmosis Drinking Water Filter System , White


The APEC ROES-50 is another widely used and reasonably priced under-sink RO system that has received numerous positive reviews. This is because it is a straightforward method for obtaining essential reverse osmosis filtration. 

It purifies water through five stages of filtration and is rated to produce approximately 50 gallons per day. The APEC ROES-50 does waste water during the purification process but at a rate of approximately 3 gallons per gallon of purified water. 

The system includes everything necessary for setup and can typically be installed by anyone with basic DIY skills in under an hour. Included are both a faucet and a pressurized storage tank.  

The APEC ROES–50 is among the most popular RO filter systems in the United States. Although the filters are a little more challenging to replace than the modular filters on competing systems such as the Home Master or Waterdrop, the filters are less expensive than many competitors. 

Since the total cost of ownership is so low, many people still have faith in this system, although the amount of wastewater produced is relatively high. ROES–50 is a highly recommended RO filter system due to its high quality, low price, and below-average maintenance expenses. 

Key Features 
  • Supreme quality – designed, engineered, and assembled in USA to guarantee water safety & your health. WQA certified to provide unlimited clean, refreshing crisp tasting water superior to bottled water 
  • Premium long-lasting filters remove up to 99% of contaminants such as chlorine, taste, odor, VOCs, as well as toxic fluoride, arsenic, lead, nitrates, heavy metals and 1000+ contaminants. Max Total Dissolved Solids – 2000 ppm. Feed Water Pressure 40-85 psi 
  • America’s No.1 rated water filter brand with 20 years of success guaranteeing trouble free, noise-free system for long lasting, dependable, pure drinking water. 2 year extended manufacturer warranty is available upon registration 
  • System comes with 100% lead-free designer faucet, plus certified JG food grade tubing and parts to provide safe, contamination-free pure water. Pipe Size: 1/4 inches. 
  • High quality leak-free quick connect fittings require no extra lock clips to seal leak – not relying on water leak detector to protect your home like other brands. Comes with all parts and industry’s best instructions and videos for an easy DIY experience. 
  • Competitively priced
  • Relatively inexpensive filters make for a low total cost of ownership (TCO)
  • Removes up to 99% of contaminants
  • Designed for DIY installation within about 1 hour
  • RO Membrane life of between 2 to 3 years
  • 4-gallon pre-pressurized water storage tank
  • 100% lead-free chrome faucet
  • U.S. based technical support which is free for the lifetime of the product
  • 1 year limited manufacturer’s warranty
  • Manufactured in the USA
  • Purified water output per day of 50 gallons is on the low end
  • APEC makes the same system but with higher output in the APEC Top Tier Supreme High Flow RO-90
  • 3 gallons of wasted water per 1 gallon of purified water is average
  • Filters in housings are more difficult to replace than modular filters
  • No remineralization stage to add back minerals
  • Does not include a UV light to kill bacteria and other microorganisms
  • Well and natural water sources are more prone to this problem but only a water test can confirm the level in your water

5. Brita Large 10 Cup Water Filter Pitcher

Brita Large 10 Cup Water Filter Pitcher with 1 No Smart Light, Made Without BPA, Everyday (Design May Vary)


The Brita Everyday Pitcher is the best in our opinion. Acquiring filtered water free of mercury, chlorine, copper, and other common contaminants is cost-effective. 

You can also anticipate that the water will be refreshing and delicious. This bottle holds 10 cups of water for the remainder of the day on a single fill. It utilizes standard Brita filters and is also available with the Longlast filter, which provides continuous filtration for six months. 

Although we liked this filter overall, there were a few drawbacks that we did not appreciate. First, there is no cap on the pouring spout, so the design is open. This is not the world’s end, but we would like a lid with a cover. 

In other versions, the filter indicator is a sticker instead of a button-activated light. Despite these two flaws, the Everyday Pitcher was speedy, dependable, and provided great-tasting water at a reasonable price, earning our highest recommendation. 

Key Features 

  • This Everyday water pitcher is made without BPA, easy to fill, fits in most fridges and can hold 10 cups of water, enough to fill 3 24-ounce reusable water bottles; Product reservoir and lid may vary 
  • This space efficient Brita pitcher is fridge friendly, features an easy-fill lid to make refills a breeze; Height 10.7″; Width 5.4″; Length/Depth 10.1″; Weight 1.3 pounds 
  • Get great tasting water without the waste; by switching to Brita, you can save money and replace 1,800 16.9 fl oz single-use plastic water bottles a year 
  • Only Brita filters are certified to reduce Chlorine (taste and odor), Copper, Mercury and Cadmium* in Brita systems, while a sticker indicator makes filter reminders effortless 
  • No Smart Lights are compatible with all Brita pitchers and dispensers except Stream; replace the Brita Standard water filter every 2 months** 
  • 10-cup sizeLonglast filter available
  • Reasonably priced filtration
  • The filter indicator is a sticker
  • There is no flap in the open design

6. PUR PLUS Faucet Mount Water Filtration System

PUR PLUS Faucet Mount Water Filtration System, Gray – Vertical Faucet Mount for Crisp, Refreshing Water, FM2500V

PUR provides a variety of entry-level faucet-mount filters. The FM2500V, in our opinion, does not quite measure up. However, it does have some advantages, and some of its features can be found on more expensive filters. Installation is as simple as a single click, and compatibility with standard PUR faucet filter cartridges ensures 100-gallon filter lifespans. 

This vertical filter is composed entirely of plastic and has a vertical design. It looks cheap and does not complement the kitchen’s aesthetic. Our most significant complaint, however, was the water flow. This filter seemed considerably slower than the others we tested, taking considerable time to fill a glass. The FM2500V is priced similarly to the PFM400H, which earned our highest recommendation, so we recommend selecting the PFM400H over the FM2500V. 

Key Features 
  • Faucet Water Filtration System  
  • Reduces 70 Impurities  
  • Easy To Attach  
  • Compatible Does Not Mean Comparable 
  • Impurities can enter your water system daily, so filtering your water is important.  
  • PUR has been developing innovative technologies for superior water filtration for over 30 years. 
  • 1-click installation
  • Better filter lifespan than the pitchers
  • Not very attractive
  • Made entirely from plastic
  • Poor water flow

7. iSpring US31 Classic 3-Stage Under Sink Water Filtration System for Drinking

iSpring US31 Classic 3-Stage Under Sink Water Filtration System for Drinking, Tankless, High Capacity, Sediment + Carbon + Carbon (Newest Version)


The iSpring US31 is a three-stage under-sink system that provides pure and healthy water on demand. The system strictly adheres to FDA regulations. In addition, it is independently tested against NSF/ANSI standards 42, 53, and 61. A sediment filter safeguards and prolongs the life of the other filters. And let’s not forget that you won’t consume as many harmful contaminants that typically exist in tap water. 

The transparent filter housings of this product are a great feature that allows for easy filter inspection. The system employs a 10″ universal sediment filter and two 10″ carbon block filters. Each filter is 5 microns in size. At the initial stage, rust, particles, and dirt are removed, contributing to the water’s purity but also to the longevity of the system. 

The other two CTO carbon filters remove chlorine, volatile organic compounds, and common chemicals, enhancing the water’s clarity, flavor, and odor. In addition, hydrogen sulfide, heavy metals, giardia, and Cryptosporidium are eliminated. On the other hand, TDS will not be removed; if you wish to deduct TDS from your water, you may want to investigate alternative under-sink water filtration systems. 

Depending on usage and water contamination, the effectiveness of all three filters lasts between 6 and 12 months. The system’s capacity is 2,000 gallons. Depending on the source water’s pressure, the water flow may reach 1 GPM. This system’s maximum pressure is 90 PSI. 

Key Features 
  • Classic Drinking Filter 
  • Fresh Healthy Water Supplier 
  • Excellent Quality and Design 
  • Easy to Install and Maintain 
  • TDS Note and Customer Services 
  • Flow Rate: Up to 1GPM depending on source water pressure 
  • Maximum Pressure: 90psi 
  • High-quality, USA-made product
  • Certified against NSF/ANSI standards 42, 53, 61
  • 3 stages of filtration and longevity of filters
  • Visible inspection of filters
  • Leaks are possible on few occasions

8. Best Under Sink water filter for hard water: iSpring RCC7AK Water Filter System

The iSpring RCC7AK is a well-known and highly rated variant of the iSpring RCC7. A remineralization filter is added to the RCC7 for only a few additional dollars, making it an even better system. Reverse osmosis-purified water can be tasteless because it is slightly acidic, and all dissolved minerals that impart flavor have been removed. The RCC7AK restores safe minerals in the water and raises the pH to an alkaline level. The result is mineral water with a fresher flavor that many people prefer. 

It produces 75 gallons of purified water per day through six stages of filtration, making it one of the highest capacity systems we’ve reviewed. 

The iSpring RCC7AK wastes three gallons of water to produce one gallon of purified water, although this amount varies depending on the pressure of the feed water. Compared to the other systems we recommend, this is average. 

The system is designed to be installed in about an hour by someone with basic DIY skills and includes everything necessary. Included are both a faucet and a pressurized storage tank. 

The RCC7AK system has filter cartridges housed in a transparent plastic filter holder. Although the iSpring system’s filters are not as simple to replace as modular filters, such as those used in Home Master systems (which pull out and the new ones), filter replacement is relatively easy and quick. 

Loosen the housing using the supplied plastic spanner wrench to replace the filters. Then, manually unscrew (there may be some water spillage at this point) and remove the old filter. Insert the new filter, apply Vaseline to the “O” ring, and tighten the housing screws. Lastly, tighten it with a spanner. 

The water efficiency of a RO system is measured by the amount of water wasted per gallon of purified drinking water produced. In some scenarios, up to four gallons of water are wasted for every gallon of filtered water produced. 

With the iSpring RCC7AK, only 3 gallons of water are wasted for each gallon of clean water produced. This isn’t very unusual. The quantity of wastewater varies based on the pressure and temperature of the feed water but is roughly average for all the systems we recommend. According to online reviews, the iSpring RCC7AK is a highly praised, inexpensive, and simple-to-install system. 

For only a few dollars more than the EXTREMELY popular RCC7, you can purchase a remineralization stage that many individuals prefer. A concern was that the advertised lifespan of the filters was shorter than that of competing systems. The lower price of iSpring cartridges offsets this shorter lifespan compared to the competition. 

Many users have stated that they prefer to use a TDS meter to check the effectiveness of the filters before replacing them instead of relying solely on the usage time. The system tested for these reviews was the most recent standard. Still, it was reassuring to learn from iSpring’s literature that they pay attention to the (very few) negative thoughts and have upgraded components that may have caused problems in the past. 

The iSpring RCC7AK is a highly recommended reverse osmosis system due to its features, cost, reputation, and quality. 

Key Features 
  • 3 Pre-filters: PP sediment filter. Carbon KDF (GAC) filter. Carbon block (CTO) filter. They remove large contaminants and protect the RO membrane from chemicals like chlorine and chloramines. 
  • The heart of the system is the Reverse Osmosis (RO) filter that removes contaminants down to 0.0001 microns – so small that only water molecules can squeeze through and virtually nothing else. 
  • Fine GAC filter provides final polishing before the purified water is delivered to the faucet. 
  • An Alkaline Remineralization filter restores healthy minerals and a natural alkaline balance, while also producing a more natural taste. 
  • The result is great-tasting bottled-water quality. 
  • A booster pump is needed if the water inlet pressure is below 45 psi. 
  • A pressure regulator is needed for water pressure 70 psi or above. 
  • Remineralization filter raises pH and improves taste
  • 75 gallons of pure water output per day
  • Water leakage alarm included in the kit
  • Inexpensive replacement filters
  • Removes up to 98% of chemicals, heavy metals, sediment, and other contaminants
  • 4-gallon pre-pressurized water storage tank
  • European-designed brushed nickel all-metal faucet
  • 3 year manufacturer’s limited warranty and 1-year money-back guarantee
  • Lifetime US based customer support
  • Made in the USA
  • 3 gallons of wasted water per 1 gallon of purified water is only average
  • The filter life is shorter than some competitor systems
  • Does not include a UV light to kill bacteria and other microorganisms
  • Well and natural water sources are more prone to this problem but only a water test can confirm the level in your water

9. Best water filter for hard water for RV: Culligan RVF-10 External Water Filtraion System

If you want peace of mind that you’re getting clean water in your camper, the Culligan RVF-10 may be what you’re looking for. 

It is a pre-tank water filtration system for RVs that allows you to enjoy (almost) chlorine- and sediment-free, better-tasting water. 

The internal cartridge is rated at 5 microns. This indicates that it will remove virtually all particles with a size of 5 microns or more significant. Thanks to the granular activated carbon media, the filter surpasses its ability to remove free chlorine. 

Unfortunately, the filtration capacity is as low as 250 gallons or three months, which is not a lot of water. This pertains to the filtering media contained within. The good news is that replacement cartridges are incredibly inexpensive. Other than that, you will receive a 5-year limited warranty. 

Key Features 
  • Provide your family with visibly clean, great-tasting water for drinking, cooking, and more 
  • COMPATIBILITY: The Culligan RVF-10 filtration system works with the Culligan D-15 filter cartridge 
  • FILTER LIFE: Up to 3 months or 250 gallons, depending on usage and water conditions 
  • INCLUDES: Culligan RVF-10 Level 1 Recreational Vehicle External Water Filter; Culligan D-15 filter cartridge; Hose connection kit with 1 foot of connector hose 
  • Easy installation
  • Comes with a hose connection kit
  • Filter cartridge lasts up to three months
  • Water gets slow in the hose when it needs replacement

10. Best 1-inch Inlet: Culligan WH-HD200-C Whole House Heavy Duty

The Culligan Whole House Sediment Water Filter protects your plumbing and appliances from sediment-related damage. Homeowners with a good system frequently deal with sediment and scale in the water supply and seek a filtration system to improve the water’s flavor. 

Additionally, sediment filtration ensures that your plumbing and appliances continue to operate efficiently. This also results in better-tasting drinking water. The Culligan system is reasonably priced and compatible with various filter options. 

The inlet and outlet connectors of the HD200-C whole house water filtration system are reinforced with stainless steel for increased durability. The method includes an integrated bracket design and a bypass shutoff valve. 

The battery-operated filter life monitor is one of the more unique features of this whole-house well-water sediment filter. Unlike most whole-house water filters, the Culligan system alerts you when it is time to replace the filter. 

The Culligan sediment water filter for the whole house targets and eliminates rust, scale, sediment, dirt, silt, and sand, including coarse and fine sand. Additionally, it eliminates the unpleasant odors and flavors associated with these contaminants. Depending on your filter cartridge, it may also reduce the taste and smell of aesthetic chlorine in your water. 

Because the unit does not include filter cartridges, you must choose your own. Consequently, the efficiency rate and filtration methods vary. If you layer your filter cartridges, this modification is amplified. The compatible filters range from three to six months or 10,000 to 24,000 gallons. 

In conclusion, the Culligan WH-HD200-C is one of the best whole-house sediment water filter systems due mainly to the variety of available filters. Not every well system is identical. If you have had it analyzed, you are aware of the sediment and other concentrations in your water supply. The Culligan system enables you to select the optimal filter for your needs. 

The connectors’ plastic threads are one of the disadvantages. Extra Teflon tape is required here, and a plumber may be needed to install it, so there are no leaks. Overall, the HD200-C offers an excellent price-to-value ratio. It effectively removes most sediment and odors from your water, as promised. 

Key Features 
  • 1″ inlet/outlet for increased water flow 
  • Packaging includes: housing wrench, mounting bracket, filter life monitory and filter battery monitor 
  • Temperature Range: 40°F – 100°F 
  • Pressure Range: 125 psi 
  • Heavy-duty sediment filter included
  • Compatible with 12 different cartridges from Culligan
  • Cartridges last for 3-6 months (depending upon selected cartridge)
  • Affordable price point
  • Some users report difficulty when installing

Factors To Consider When Choosing The Best Water Filter For Hard Water

Using water filters at home is becoming more popular. People are now aware of the risk to their health and increasing contamination in all areas of life, including drinking water. Due to this awareness, manufacturers have developed an enormous range of different products that can filter out various contaminants. 

One factor that has become very important when deciding which product, you need is how hard your water is. It’s true that if the water is hard, it will likely contain more calcium and magnesium, which makes it harder to remove with a simple filter. However, there are many advantages in choosing the best water filter for hard water if you need one, so read on to find out how to choose between them according to this factor. 

Softening method 

The first thing that must be considered when choosing a water filter for hard water is the softening method it uses. There are basically three different methods: ion exchange, reverse osmosis and mineral balls.  

The first two require very specific resin filters to work, which should always be changed a couple of months after installing the water filter to maintain its effectiveness. 

There’s no need for that with a mineral ball water filter, since it works by adding minerals to the water and thus obtaining a similar effect to when you drink tap water before it has been filtered.  This method is very cost effective in terms of maintenance because there isn’t anything to change. 

Installation method 

Next, you must consider the space available for installing the water filter, because this determines which products can be used.  

A cartridge water filter is very simple to install, and it fits into most types of taps without any problem. It’s also easy to replace, when necessary, but it’s just as easy to install a new one. 

For under sink filters, you must make sure that there is enough space for the water filter to fit under the sink and that it will fit your tap.  

A valve can often be very useful. Reverse osmosis water filters are installed on the wall near the faucet, which means you need even more space if you want to install it under the sink. 

Maintenance requirements 

Finally, you need to consider how much maintenance each water filter requires for it to continue working efficiently throughout its lifespan.  

A cartridge type water filter just needs to be replaced every now and then, but if you have a mineral ball water filter or an under-sink water filter, you will need to flush the system every month or so, for example. 

When you buy a water filter for hard water, it’s always good if you can find one that combines all these factors but doesn’t have any serious disadvantages. This way, you can be sure that your choice was the best possible option. 

FAQs About Best Water Filter For Hard Water

  • In this article I will answer some common questions about water filters and hard water. If you have any additional questions, find errors (I’m not an expert,) or want to leave feedback/suggestions for improving the article, please feel free to do so in the comments.  

Hard water is water that has high mineral content. It contains more minerals than soft water, which does not have any dissolved solids. 

Hard water is not dangerous to drink, but it can cause problems with lathering and foaming. It’s primarily an aesthetic issue because many people like the way soft water feels on their skin or hair (that said, showering in hard water does increase the amount of soap needed). Hard water also can reduce lathering and cleaning effectiveness of soap, shampoo and detergents. This is because the calcium and magnesium ions in hard water bind to surfactants (or “surface acting agents”) such as soaps or shampoos, thus reducing their ability to attract dirt particles. 

If you live in an area with hard water, you may want to purchase a water filter. While the minerals in hard water won’t affect your health, they will leave deposits on dishes and soap scum-like build up on shower heads and bathroom fixtures. If you have very hard water, it can also damage appliances like the coffee maker, dishwasher or washing machine. 

A good filtration system will reduce the amount of sediment in your water supply. This increases its ability to clean items like clothing, dishes and even hair and skin (the dirt and grime it removes is what causes dry skin). 

In the simplest terms, a water filtration system is an easy and effective way to remove contaminants from your home’s drinking water. In other words, it works as a method of cleansing your supply. A water filter system operates on the basic principle that all liquids can be divided into two separate categories: solids and liquids. When the water filter is installed on a faucet, it will separate these two categories from one another, allowing you to choose which of them you wish to consume. 

The main problem associated with hard water is that it can make cleaning difficult. Hard water cleaner is not always able to dissolve completely in water, leaving behind particles that are difficult to remove. These particles can get lodged into carpets, fabric, and even skin to make cleaning tough. 

For the purposes of this article, a water filter is a device that removes dissolved minerals from hard water. A typical example would be an under-sink water filter which you attach to your kitchen faucet, and it provides you with filtered drinking water at that faucet. 

For the purposes of this article, soft water is water that does not contain dissolved minerals. Softened water may be either soft or hard, depending on who you ask (there is disagreement about whether softened water should still be considered “hard.”) 

It depends on your water source. If you have a private well, the answer is “no.” I would not drink untreated tap water from a public utility or municipal system either. The groundwater in many areas is contaminated by bacteria. If you are concerned about this, read my article about the best whole house water filter. 

No. Granular activated carbon (GAC) and reverse osmosis (RO) filtering would be required to purify the water, as discussed below. 

If you do not have heart disease or kidney problems, distilled water is probably safe for short-term use only. Drinking distilled water for a long time can leach important minerals from your body. In the past, “hard” or untreated distilled water was used to clean contact lenses because it was considered very pure and therefore not likely to cause harm. More recently, however, the American Academy of Ophthalmology advises against this practice.  

A reverse osmosis (RO) water filter is a type of “point-of-use” water purification device. It treats only the amount of water you’re currently using, and it attaches to your faucet. The RO membrane filters out dissolved minerals, bacteria, viruses/fungi, and other contaminants. A comparison of RO, distillation, and GAC is presented in the article where to buy whole house water filter.  

Some people are concerned that chlorine or chloramine in their tap water will cause skin dryness/irritation during extended showers. There are no scientific studies that show any conclusive link between these chemicals and skin dryness/irritation. That said, I personally use a shower filter (see this article for the model that I purchased) to remove chlorine and chloramine because my own subjective experience tells me it makes my skin feel softer. 

Some people believe that drinking hydrogen-rich (i.e., reduced) water is good for your health and can even help you lose weight or reduce pain caused by inflammation, but there’s no scientific evidence to support these claims.  

Some people believe that drinking alkaline water will prevent disease and increase longevity, but there’s no scientific evidence to support these claims.  

Magnesium is an essential mineral and drinking water is not the best way to get it. I agree with most sources, including this study, which say that the average person in the United States consumes enough magnesium already through their normal diet. 

The same warnings I mentioned above for distilled water apply to distilled baby water, i.e., it has the same potential risks. 

Steam with very low mineral content is produced in the heating process. So, you would expect that if the unit were working properly, it would produce clean steam. For this reason, I do not recommend using a “poor man’s” solution to treat hard water in a humidifier. Point-of-use treatments such as those mentioned above are much more effective and less costly than any workaround involving distilled water. 

Bathing or showering in hard water is harmless and is not a reason to buy a home water softener. 

The easiest way to tell whether your water is “hard” or not is to do the soap test mentioned above. If it doesn’t lather well, your water is hard. Alternatively, you can ask your water supplier what the hardness level of your tap water is, or you can buy a home test kit. 

Hardness minerals may also be found in your well water and even sometimes in your bottled drinking water. If you don’t know whether any such source is present, do the soap test as mentioned above or send a sample to your local water testing laboratory to find out. 

Water hardness is a term used to describe the amount of calcium and magnesium present in your home’s tap water. Hardness is measured in grains per gallon (GPG) or parts per million (ppm). Most regions use GPG as their measuring unit, but some local areas have switched to ppm. 

In areas where the water contains less than 60 ppm, it is classified as “soft”, and over 180 ppm is excessively hard. The hardness of your own tap water can vary depending on where you live. Water that is minimally hard will probably not need a water softener, but in regions with water that is very hard, a softener can be beneficial. 


If you are looking for the best water filter for hard water, we have a few recommendations for you. We suggest checking out filtration systems that use reverse osmosis or activated carbon filters. These systems can be installed under your sink and will provide clean and refreshing drinking water for your entire family. Have you tried one of these methods to filter your hard water? Let us know in the comments! 

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