7 Best Chromium 6 Water Filters (*Update 2024)
Written by: Gene Fitzgerald // Last Updated: Jan 31, 2024
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Top Pick: What’s the Best Chromium 6 Water Filter?
The best chromium 6 water filter in 2024 is the Clearly Filtered Pitcher, because it is NSF-tested to remove 97.8% chromium 6 from water among hundreds of other contaminants. Also, it is easy to set up and use, affordable to maintain, backed by a lifetime warranty and 30-day satisfaction guarantee, and has a long filter life of 100 gallons.
Chromium 6 is both toxic AND carcinogenic even in tiny dosages. Still, it’s being detected in samples taken from public and private water supplies all across the U.S. Good news is, there are water filters that can reduce chromium 6 by up to 99% – you just need to choose carefully!
Too many options out there? Where to even start? Don’t worry, we’ve done the work for you. We’ve reviewed more than 24 water filters for their chloramine reduction capabilities and ranked their best ones. This should help you find your ideal system in no time…
Contents
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No Time to Read? Check Our List of the Best Chromium 6 Water Filters!
| Filters | Details | |
|---|---|---|
 Best for Ease of Use: Clearly Filtered Pitcher |
Overall Rating: 5.0/5.0
Get 10% Off! Use Code: |
Price: $ Type: Pitcher Chromium 6 Reduction: 97.8% NSF: 42, 53, 401, P473 Warranty: Limited Lifetime Read Review: Click Alexa’s Video Review: Click |
 Best for Under Sinks: Clearly Filtered 3-Stage |
Overall Rating: 5.0/5.0
Get 10% Off! Use Code: |
Price: $$ Type: Under Sink Chromium 6 Reduction: 99.4% NSF: 42, 53, 401 Warranty: Limited Lifetime Read Review: Click Alexa’s Video Review: Click |
 Best for Reverse Osmosis Water Purification: AquaTru |
Overall Rating: 4.5/5.0
Deal Includes Free Replacement Filter Set + 15% Discount Code |
Price: $$ Type: Countertop RO Chromium 6 Reduction: 97.2% NSF: 42, 53, 58, 401, P473 Warranty: 1 Year Read Review: Click Alexa’s Video Review: Click Sara’s Video Review: Click |
 Best for Countertop/Gravity Filtration: Berkey |
Overall Rating: 4.5/5.0
|
Price: $$ Type: Gravity Chromium 6 Reduction: 99.85% NSF: 42, 53 Warranty: 2 Years to Lifetime Read Review: Click |
 Best for Whole House: US Water Purely EZ Chromium 6 Filter |
Overall Rating: 4.0/5.0
Get 5% Off! Use Code: |
Price: $$$ Type: Whole House Chromium 6 Reduction: >85% NSF: – Warranty: ? Read Review: Click |
 Best for Faucets: Crystal Quest |
Overall Rating: 4.5/5.0
Get 5% Off! Use Code: |
Price: $ Type: Faucet Chromium 6 Reduction: Not Specified NSF: – Warranty: 1 Year Read Review: Click |
Chromium 6 Water Filter Reviews
Our Top Picks
- Clearly Filtered Water Pitcher – Best for Chromium-6 Filtration Using a Pitcher
- Clearly Filtered 3-Stage – Best for Under the Sink
- AquaTru – Best for Reverse Osmosis Purification
- Aquasana OptimH2O – Best for Under the Sink + RO
- Berkey – Best for Gravity/Countertop Filtration
- US Water Purely EZ – Best for Whole House
- Crystal Quest – Best for Faucets
1. Best for Ease of Use: Clearly Filtered Pitcher
In our opinion, the best chromium 6 water filter in the pitcher category in 2024 is the Clearly Filtered. It’s tested to removes more contaminants than any other filter pitcher in the market and is therefore ideal for everyone who wants clean and healthy drinking water for peace of mind. Chromium 6 reduction: 97.8%. Definitely 5 stars!
|
Clearly Filtered Water Filter Pitcher |
|
| Price: | $ |
| Type of Filter: | Pitcher |
| Chromium 6 Reduction: | 97.8% |
| NSF/ANSI: | 42, 53, 401, P473 |
| Warranty: | Lifetime (Limited) |
|
Overall Rating: 5.0/5.0
Get 10% Off! Use Code: |
|
Alexa’s Video Review
Alexa, our inhouse video content producer, has ordered and tested the Clearly Filtered Water Pitcher with her own hands. In other words, she has assembled and used the pitcher at home for several weeks to gain invaluable first-hand experience and insights. Alexa has documented the entire process and shares her opinion in the video below:
Other Specs
- Model: CF-PRF
- Last Price: $90
- Annual Maintenance Cost: ~$150
- Filter Media: Carbon + Composite Shell
- Storage Capacity: 80 oz (10 Cups)
- Filter Life: 100 gal
- WxHxD: 11.25″x10.25″x5″
- Weight (Empty): 2.3 lb
Key Features & Pros
- Made in USA!
- This water filter pitcher is tested against 4 different NSF/ANSI standards which guarantee its effectiveness. Standards 42, 53, 401 and P473 cover chlorine and chloramine (up to 99.7%), lead (99.3%), arsenic (98.3%), fluoride (>99.5%), pharmaceuticals (up to 99.9%), pesticides (up to 99.9%), herbicides (up to 99.9%), much dreaded PFAS (up to 99.5%), several dozen VOCs (up to 99.9%), and, of course, chromium 6 (97.8%) among other water contaminants.
- Filtration process is based on Affinity Filtration Technology which combines regular GAC (granular activated carbon) with several proprietary filter media.
- All healthy minerals remain in the water.
- Unit can be assembled in 2 minutes.
- It’s really easy to use.
- 10-cup water storage volume is suited for family use.
- Medical-grade Tritan material is 100% free from BPA.
- At a cartridge life of 100 gallons (around 4 months), maintenance is low.
- Cost per filter: $50, but you get a discount if you subscribe or buy in bulk.
- Clearly Filtered offers a 30-day money-back satisfaction guarantee in case you are unhappy with your purchase.
- You also get a limited lifetime warranty on the pitcher.
Cons
- Certainly more expensive than many competing water filter pitchers available – but also more powerful.
- Some people had issues with slow and clogged filters. We cannot attest to this.
- Besides, longer contact time between filter media and water increases contaminant removal.
- The company replaces defective filter cartridges for free.
Our Rating
- Filtering Performance: 5.0/5.0
- Filter Life: 5.0/5.0
- Price Tag: 4.0/5.0
- Yearly Cost: 4.5/5.0
- Overall: 5.0/5.0
Best for
The Clearly Filtered is best for people who want a chromium filter pitcher that’s easy to use, highly effective, and affordable.
→ Find Full CF Pitcher Review Here
2. Best for Under the Sink: Clearly Filtered 3-Stage
Our #1 under sink water filter for chromium 6 removal is also manufactured and sold by Clearly Filtered. It’s their 3-stage system. NSF-standardized testing executed by independent and EPA-approved laboratories has shown that the filter can remove more than 230 water contaminants – most importantly chromium 6 obviously: 99.4%.
99.4% reduction makes this under sink system the second most effective chromium 6 water filter on our list. Only the Big Berkey, reviewed further down below, is slightly better in this regard.
Bottom line, there is not a single under sink water filtration system that can beat the Clearly Filtered 3-stage!
|
Clearly Filtered 3-Stage Under-the-Sink System |
|
| Price: | $$ |
| Type of Filter: | Under Sink Water Filter |
| Chromium 6 Reduction: | 99.4% |
| NSF/ANSI: | 42, 53, 401 |
| Warranty: | Lifetime (Limited) |
|
Overall Rating: 5.0/5.0
Get 10% Off! Use Code: |
|
Alexa’s Video Review
As part of the BOS team, Alexa has installed and tested the Clearly Filtered Under-the-Sink Water Filter System in her own home and with her own hands. She has used the system for several weeks to gather genuine first-hand experience. And most importantly, Alexa has documented the entire process, including her findings and personal opinion, in the video below:
Other Specs
- Model: 3-Stage Under the Sink Water Filter System
- Last Price: $550
- Annual Maintenance Cost: ~$440
- Filter Media: Carbon + Proprietary Blend
- Filter Stages: 3
- Filter Life: 2,000 Gallons
- WxHxD: 15″x15.4″x3.1″
- Fitting: ⅜”
Key Features & Pros
- Made in USA.
- Under sink water filter is tested against NSF/ANSI standard 42, 53 and 401.
- Excerpt from the lab report: Chlorine 98.6% removal, chloramine 95.3%, lead 98.9%, arsenic 94.3%, PFAS 99.6-99.8%, VOCs and semi-volatile chemicals up to 99.9%, hexavalent chromium 99.4%, and much more.
- If this water filter can’t make your drinking water healthy, no unit can.
- Filtration stage 1 is coconut shell-based granular activated carbon. Stage 2 + 3 are proprietary filter media blends.
- Healthy minerals are maintained.
- The non-permanent and quick install is great for DIYers and renters alike.
- You can mount the unit under your kitchen sink if you want. Everything you need is included in the package.
- Stainless steel hoses provide durability.
- The modular filters last 2,000 gallons each (1 year). They can be replaced within seconds without tools and without closing the water supply.
- Clearly Filtered promises a full refund within 30 days after purchase if you are not satisfied with how the unit performs.
- Under sink water filter system comes with limited lifetime warranty.
Cons
- Water pressure drops by 25-35%.
- System is more costly to purchase and maintain.
- If you subscribe to filters you get a 10% discount and free shipping.
Our Rating
- Filtering Performance: 5.0/5.0
- Filter Life: 5.0/5.0
- Price Tag: 4.0/5.0
- Yearly Cost: 4.5/5.0
- Overall: 5.0/5.0
Best for
The Clearly Filtered 3-Stage is best for people who want an under sink water filter that is compact, quick to install, and very effective.
→ Find Full CF 3-Stage Under Sink Review Here
3. Best for Chromium 6 Removal Using Reverse Osmosis: AquaTru
In our opinion, the best chromium 6 filter using reverse osmosis water purification technology is the AquaTru. 5 different NSF certifications testify healthy and great-tasting RO water that is up to 99.99% pure. Chromium 6 filtration is 97.2% – not bad.
Another reason why we like the AquaTru is its plug ‘n’ play feature: The countertop system requires no installation, just a quick assembly. It doesn’t get easier than this!
|
AquaTru Countertop Reverse Osmosis System |
|
| Price: | $$ |
| Type of Filter: | Reverse Osmosis |
| Chromium 6 Reduction: | 97.2% |
| NSF/ANSI: | 42, 53, 58, 401, P473 |
| Warranty: | 1 Year |
|
Overall Rating: 4.5/5.0
Deal Includes Free Replacement Filter Set + 15% Discount Code |
|
Alexa’s Video Review
Alexa, our inhouse video content producer, has ordered and tested the AquaTru Reverse Osmosis System. In other words, she set up the AquaTru with her own hands and used it in her home for several weeks to gain invaluable first-hand experience and insights. Alexa has documented the entire process and shares her opinion on the water filter in the video below:
Sara’s Video Review
Sara has also tested the AquaTru. And here review even includes lab testing, so a comparison of the unfiltered vs. filtered water:
Other Specs
- Model: AquaTru
- Last Price: $449.00
- Annual Maintenance Cost: ~$100-120
- Primary Filter Media: RO
- Filter Stages: 4
- Water: 1 Gallon in 10-15 min
- Recovery Rate: 80%
- Filter Life: 600-1,200 Gallons
- WxHxD: 12″x14″x14″
- Water Temperature: 39-100 °F
- Operating Pressure: 40-85 psi
Key Features & Pros
- The countertop RO system is easy to use and doesn’t take up much space.
- Clean permeate water tank can be removed for cooling etc.
- Brine water collects in second tank ready for dumping.
- NSF-certified (standards 42, 53, 58, 401, P473) 4-stage filtration process provides for clean drinking water which can also be used for cooking.
- Sediment and activated carbon pre-filter combo catch sand, silt, rust and other debris, and also eliminate chlorine taste and odor (96.6%), and various chemicals.
- Reverse osmosis membrane rejects lead (99.1%), chromium 6 (97.2%) and other heavy metals, fluoride (93.5%), cyst (99.99%), and overall TDS (87.1%).
- The coconut shell carbon post-filter block removes PFOA and PFOS (97.5%), pharmaceuticals, pesticides, and organic contaminants.
- A built-in booster pump provides for fast filtration. The system purifies 1 gallon of water within 10 to 15 minutes.
- The pump also reduces wastewater production. Only 20% goes to waste. FYI: 3 to 5 gallons wasted per 1 gallon of filtered water is the standard for reverse osmosis systems.
- Setup only takes a few minutes.
- The AquaTru doesn’t require much of your time in terms of maintenance. That’s because the filter elements last 6-12 months and are easily replaceable.
- System tracks your water usage and notifies you when a filter needs replacement. Convenient!
- Expect to pay about $100-120 yearly for new filters.
- All plastic material is free from BPA and BPS.
- System is covered by 1-year warranty.
Cons
- Potential issues with leaking.
- Some people reported system malfunctioning a couple of months after purchase.
Our Rating
- Filtering Performance: 4.5/5.0
- Filter Life: 5.0/5.0
- Price Tag: 4.0/5.0
- Yearly Cost: 5.0/5.0
- Overall: 4.5/5.0
Best for
The AquaTru is best for people who want a compact RO system that’s installation-free, easy to use, and highly effective at removing chromium 6.
→ View Full AquaTru Review Here
4. RO System Alternative: Aquasana OptimH2O
Next on our list is the OptimH2O by Aquasana, our favorite tank-based under sink reverse osmosis system. It’s also the best for chromium 6 filtration (97.0% reduction) in its category.
Like the AquaTru reviewed above, the Aquasana OptimH2O is NSF-certified to remove over 80 water contaminants that could be lurking in your water supply causing harm. What’s more, the system remineralizes your water enriching it with calcium, magnesium and other minerals for a more rounded taste and balanced pH.
Aquasana OptimH2O Under Sink RO System |
|
| Price: | $$ |
| Type of Filter: | Reverse Osmosis |
| Chromium 6 Reduction: | 97.0% |
| NSF/ANSI: | 42, 53, 58, 401, P473 |
| Warranty: | 2 Years |
|
Overall Rating: 4.5/5.0
|
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Other Specs
- Model: OptimH2O Reverse Osmosis
- Annual Maintenance Cost: ~$240
- Primary Filter Media: RO
- Filter Stages: 4
- Membrane Rating: 35 gpd
- Recovery Rate: 29.43%
- Filter Life: 365 Gallons
- WxHxD (System): 12″x12.5″x4.5″
- Tank: 11″x16″x11″, 3.2 gal
- Water Temperature: 40-100 °F
- Operating Pressure: 40-100 psi
Key Features & Pros
- Water filter is certified according to NSF/ANSI standards 42, 53, 58, 401, and P473 for the removal of 88+ contaminants.
- Guaranteed performance.
- Chlorine and chloramine (97.66%), VOCs (~99.4%), BPA (98.9%) and other chemicals, lead (99.3%), pentavalent arsenic (97.6%), chromium-6 (97.0%), mercury (>95.8%), fluoride (95.7%), TDS (95%), PFOA & PFOS (96%), and more.
- Makes use of 3 filter stages.
- Granular activated carbon filters chlorine and larger particulates.
- RO membrane removes microbes, heavy metals, salts, etc.
- Claryum filter uses two types of carbon (activated + catalytic) as well as ion exchange resin to adsorb and reduce all kinds of chemicals like pesticides, chloramine, drug residues, and also a bunch of heavy metals.
- The remineralizer adds healthy calcium, magnesium, and potassium for improved water taste.
- Choose from 3 full-metal faucet designs: Chrome, brushed nickel, oil-rubbed bronze.
- Suited for DIY installation. All required bits and pieces are part of the package.
- RO system maintenance is a piece of cake. The different filter stages can be twisted on and off, and there are quick-connect fittings.
- Comes with satisfaction guarantee valid for 90 days and a 2-year limited warranty for peace of mind.
Cons
- Occasional issues with leaks.
- Some system components feel a bit flimsy, such as the RO faucet.
- Filter replacement cost per year: Around $240 depending on your water usage and quality.
- More than what most competitors charge, but you can join the Water for Life filter program to get discount.
- About 70% of the input water goes down the drain.
Our Rating
- Filtering Performance: 5.0/5.0
- Filter Life: 4.5/5.0
- Price Tag: 4.0/5.0
- Yearly Cost: 4.0/5.0
- Overall: 4.5/5.0
Best for
The Aquasana OptimH2O is best for people who want an NSF-certified under sink RO system for guaranteed chromium 6 removal.
5. Best For Your Countertop: Berkey Gravity Water Filter
As mentioned above, the chromium 6 water filter with the highest removal rate of 99.85%, believe it or not, is the Big Berkey.
As a gravity water filter, the system doesn’t require external water pressure or electricity to function – great for emergency scenarios. Plus, the filtration process not only removes hexavalent chromium but a broad range of water contaminants.
So why is it not our #1 chromium filter overall? Let’s find out!
|
Berkey Gravity Water Filter |
|
| Price: | $$ |
| Type of Filter: | Gravity |
| Chromium 6 Reduction: | 99.85% |
| NSF/ANSI: | 42, 53 |
| Warranty: | 2 Years to Lifetime |
|
Overall Rating: 4.5/5.0
|
|
Other Specs
- Model: Big Berkey
- Last Price: $407.00
- Annual Maintenance Cost: ~$55
- Primary Filter Media: Carbon + Ion Exchange
- Flow Rate: Up to 7 gph
- Storage Capacity: ~2.25 Gallons
- Filter Life: 3,000 gal
- WxHxD: 8.5″x21″x8.5″
Key Features & Pros
- Berkey gravity water filters target pollutants down to the submicron level. This includes bacteria, cyst, and viruses. Besides, the system removes chlorine, chloramine, disinfection byproducts, pharmaceuticals, pesticides, herbicides, volatile organic compounds, cadmium, lead, arsenic, mercury, chromium 6, sediment, bad taste and odor – you name it.
- NSF standard 42 and 53-tested.
- Beneficial minerals are preserved in the water adding to your daily nutritional intake.
- You can use addon filters to boost fluoride and arsenic filtration.
- Big Berkey is only one of several different system sizes. Larger means faster filtration and higher storage capacity.
- Durable 304 food-grade stainless steel material ensures longevity.
- Rubber gasket prevents scratching on countertop.
- Putting the standalone filter together is simple and doesn’t involve plumbing.
- System maintenance is one of the best parts. A set of two Black Berkey filter elements can provide 6,000 gallons of filtered water for up to 3 years. Average annual cost: About $55.
- A lifetime warranty has you covered in case anything goes wrong. Filter elements are warranted for 2 years.
Cons
- Frequent re-priming of the filter elements may be needed.
- Water continues to flow into the bottom chamber, even if it’s full.
- You need to lift the upper tank if you want to check how much filtered water is left.
- The plastic spigot is prone to leaking and negative pressure may reduce flow.
Our Rating
- Filtering Performance: 4.5/5.0
- Filter Life: 5.0/5.0
- Price Tag: 4.0/5.0
- Yearly Cost: 5.0/5.0
- Overall: 4.5/5.0
Best for
The Big Berkey is best for people who want a gravity system capable of filtering chromium 6 that’s highly effective and ideal for regular use and prepping.
→ View Full Big Berkey Review Here
6. Best for Whole House Chromium 6 Filtration: US Water Purely EZ
The US Water Purely EZ whole house water filter is the only POE system we could find capable of considerable chromium 6 removal. How much? At least 85% as tested by a certified laboratory in the U.S.
85% is nowhere near perfect, but it’s a good start. We would recommend using the whole house water filter as a first defense against hexavalent chromium. If you combine it with one of the point-of-use filters reviewed above to treat your home water, you will have less to no chromium 6 left in the end product. Above that, chromium 6 can cause skin, eye, and respiratory issues. Thus, it makes sense to have it removed as much as possible from your shower water.
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US Water Purely EZ Whole House Water Filter |
|
| Price: | $$$ |
| Type of Filter: | Whole House |
| Chromium 6 Reduction: | >85% |
| NSF/ANSI: | – |
| Warranty: | ? |
|
Overall Rating: 4.0/5.0
Get 5% Off! Use Code: |
|
Other Specs
- Model: 320-USP-PEZ3
- Last Price: $599
- Annual Maintenance Cost: ~$320
- Primary Filter Media: Carbon
- Filter Stages: 3
- Flow Rate: 15 gpm
- Water Temperature: Up to 100 °F
- Water Pressure: Up to 90 psi
- Fitting: ¾” or 1″
Key Features & Pros
- Whole house filtration means every tap, shower, and faucet in your house will receive filtered water.
- System combines 3 stages of filtration:
- Stage 1: 1-micron pleated sediment pre-filter takes out sand, silt, sediment, and other particulate matter.
- Stage 2: Intercepter sub-micron filter is filled with powdered activated carbon and Agion Silver. Here, chemicals, heavy metals including lead and chromium, viruses, bacteria, fungi, and cysts are filtered out. Agion also prevents fouling of the entire filter element.
- Stage 3: Radial flow carbon filter removes the majority of leftover chemical contaminants and gives the water a finishing touch neutralizing unpleasant taste and odor.
- Apart from >85% chromium and the contaminants listed above, the Purely EZ whole house filter also reduces or removes arsenic V (>95%), cadmium (>95%), chlorine, VOCs, PCBs, BPA, and others.
- 15 gpm service flow rate is plenty of water for most households (up to 4-6 bathrooms).
- Includes filter wrench, mounting bracket, and screws.
- No more difficult to install than any other cartridge-based whole house water filtration system.
- Filter replacements are straightforward.
Cons
- For city water only.
- Replacement filter cost add up over time. We estimate around $320 per year depending on your water quality and usage.
Our Rating
- Filtering Performance: 4.5/5.0
- Filter Life: 4.0/5.0
- Price Tag: 4.5/5.0
- Yearly Cost: 3.5/5.0
- Overall: 4.0/5.0
Best for
The US Water Purely EZ is best for whole house chromium 6 water filtration.
7. Best for Your Kitchen Faucet: Crystal Quest
The last water filter that removes chromium 6 on our list is the Crystal Quest faucet mount water filter system.
6 filter stages target a plethora of water contaminants, including chromium 6.
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Crystal Quest Faucet Water Filter |
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| Price: | $ |
| Type of Filter: | Faucet |
| Chromium 6 Reduction: | Not Specified |
| NSF/ANSI: | – |
| Warranty: | 1 Year |
|
Overall Rating: 4.5/5.0
Get 5% Off! Use Code: |
|
Gallery
Other Specs
- Model: CQE-FM-00501, CQE-FM-00500
- Last Price: $34.95
- Annual Maintenance Cost: ~$60
- Primary Filter Media: KDF + Ion Exchange Resin
- Flow Rate: 0.3 gpm
- Filter Life: 2,000 gal
- Water Temperature: 40-85 °F
- Water Pressure: 20-60 psi
- Fitting: ¼”
Key Features & Pros
- Choose between chrome and white finish.
- The faucet water filters uses 6 filter layers or stages to provide clean, filtered water:
- First and last come two 1-micron filter pads. They remove larger particles, to prevent clogging of the other filter stages, and also cryptosporidium and giardia.
- Two types of Eagle Redox Alloy filter media do the bulk of the contaminant reduction: Iron, mercury, lead, copper, nickel, cadmium, hydrogen sulfide, and most importantly chromium are filtered out – among other stuff. In addition, the growth of germs like fungi and bacteria is prevented.
- Granular activated carbon adsorbs chlorine, bad tastes and odors, and chemicals like pesticides.
- Ion exchange resin takes care of any leftover metals.
- Space saving design doesn’t occupy your entire sink.
- All materials are BPA-free.
- Installation is quick. Usage is easy.
- Fits standard-sized kitchen faucets.
- Adapters are included.
- 2000 gallons filtration capacity lasts 6 to 12 months. New filter cartridges are cheap.
- Crystal Quest provides A+ customer service.
- The product is backed by a 1-year limited warranty.
Cons
- Due to the lack of NSF testing we cannot tell how much chromium 6 will be removed from your water.
- 0.3 gpm flow rate is rather slow but indicates a thorough filtration process.
Our Rating
- Filtering Performance: 4.0/5.0
- Filter Life: 5.0/5.0
- Price Tag: 4.5/5.0
- Yearly Cost: 4.5/5.0
- Overall: 4.5/5.0
Best for
The Crystal Quest is best for chromium 6 filtration using a faucet mounted filter.
More Reviews:
Comparison List
(Mobile Hint: Swipe to Scroll)
| Filter | Price | Yearly Cost | Type | Chromium 6 Reduction | NSF | Filter Media | Filtration Capacity | Warranty | Additional Info |
|---|---|---|---|---|---|---|---|---|---|
| Clearly Filtered Pitcher | $ | ~$150 | Filter Pitcher | 97.8% | 42, 53, 401, P473 | Carbon + Composite Shell | 100 Gallons | Lifetime (Limited) | |
| Clearly Filtered 3-Stage | $$ | ~$440 | Under Sink Filter | 99.4% | 42, 53, 401 | Carbon + Proprietary Blend | 2,000 Gallons | Lifetime (Limited) | |
| AquaTru | $$ | ~$100-120 | RO | 97.2% | 42, 53, 58, 401, P473 | RO | 600-1,200 Gallons | 1 Year | |
| Aquasana OptimH2O | $$ | ~$240 | RO | 97.0% | 42, 53, 58, 401, P473 | RO | 365 Gallons | 2 Years | |
| Berkey | $$ | ~$55 | Gravity Filter | 99.85% | 42, 53 | Carbon + Ion Exchange | 3,000 Gallons | Life | |
| US Water Purely EZ | $$$ | ~$320 | POE | >85% | – | Carbon | ? | ? | |
| Crystal Quest Faucet Filter | $ | ~$60 | Faucet Water Filter | Yes | – | KDF + Ion Exchange Resin | 2,000 Gallons | 1 Year |
Buying Guide: How to Choose the Chromium 6 Water Filter That’s Best for You
The following are key features worth considering when shopping for a chromium 6 water filter. They will help you choose the right on for your needs and budget.
NSF/ANSI Standard 53 & 58 Testing/Certifications
The most important thing to consider when shopping for a water filter capable of removing chromium 6 is NSF/ANSI standard 53 and 58 testing and certifications.
Being a not-for-profit institution, NSF International develops industry standards for water filters among other products. Based on these standards, independent testing organizations such as the WQA (Water Quality Association) test and certify specific water filter models to these standards.
In order to meet said standards, a water filter must be able to reduce the amount of total chromium in water below the current allowed maximum contaminant level (MCL) of 100 ppb – which was defined by the EPA. 100 ppb for total chromium is nowhere near perfect, but it’s something.
You should also compare the specific chromium 6 reduction rates, if available, listed in performance data sheets and lab reports.
By the way, NSF Standard 53 is for regular water filters while standard 58 is for reverse osmosis systems only.
Types of Chromium 6 Filtration Systems
There are several filtration methods suited for chromium 6 removal.
- For one, we have reverse osmosis water purification.
- Ion exchange works great, too.
- And so does distillation.
- As for KDF, you need a large filter media bed to allow for sufficient contact time with the water.
These 4 methods can be found in whole house water filters, under sink systems, water filter pitchers, some countertop units, gravity water filter systems, faucet-mounted water filters, water distillers, and reverse osmosis systems.
Testing Your Water for Other Contaminants
It makes sense to also test your water for other contaminants than just chromium 6. Lead for example is one that’s equally dangerous and widespread.
In our opinion, it’s usually best to go with professional lab testing. You can test for literally hundreds of contaminants including disinfection byproducts, pesticides, organics, heavy metals, and so on.
Alternatively, check the last water quality report. Your water utility has to provide you one for free.
If you have your own private well, this is not an option.
What about doing your own testing? It can be a good idea to get a general idea of the type of water contaminants you’re facing, but it might lack the accuracy needed that would allow you to choose the filtration methods best suited for your specific water problem.
Chromium 6 Filter Installation
Most water filters for chromium 6 are point-of-use systems. Thus, they’re easy to install or might not need any installation at all.
A whole house water filtration system can be more challenging to hook up, but it doesn’t have to be.
Replacement Filter Cost
The cost for new filter elements should not be underestimated. In the long-term, it’s the predominant factor that decides whether or not you made a good investment
Naturally, affordable and long-lasting replacement filter are to be preferred.
More on Chromium 6 Filters
How Does Chromium Get into Our Water Supplies?
Chromium 6 a.k.a. hexavalent chromium, chromium(VI) or Cr(VI) is any chemical compound that contains the element chromium in its sixth (6+) oxidation state.
Although chromium 6 only occurs naturally in some areas, it has found its way into basically all our water supply systems as industrial runoff from manufacturing facilities due to leakage, poor storage, or inadequate disposal.
The metal is used in dyes, paints, and inks in leather and textile manufacturing, as an anticorrosion agent in surface coatings – think paints and primers – wood preservation, and electroplating onto metal parts among other applications.
What Are the Health Effects of Chromium 6?
A study performed by the National Toxicology Program found an increase of intestinal and stomach tumors in mice and rats when given chromium-6 in drinking water. Other scientists reported workers exposed to chromium 6 having shown an increased risk of stomach cancer.
Long-term exposure in drinking water can also cause liver damage and harm the reproductive system. On top of that, hexavalent chromium has been linked to
- lung cancer in workers (due to airborne hexavalent chromium)
- irritation or damage to the nose, throat, and lung (airborne hexavalent chromium)
- irritation or damage to the eyes and skin (direct contact)
Source: https://www.osha.gov/sites/default/files/publications/hexavalent_chromium.pdf
What Level of Chromium 6 Is Considered Safe?
The Environmental Protection Agency has not set a federal limit for chromium 6 in drinking water to this day. There is only a standard for total chromium, so chromium 3 and chromium 6 combined. This does not mean, however, that chromium 3 and chromium 6 are equally dangerous. In fact, the consumption of chromium 3 does not pose a health risk.
But how about chromium 6? Well, the current allowed maximum contaminant level for total chromium as defined by the EPA is 100 ppb. But, the California Office of Environmental Health Hazard Assessment (OEHHA) has set a public health goal for just chromium 6 of 0.02 ppb, which is expected to cause no more than one case of cancer in one million people who drink the water for a lifetime.
0.02 ppb, that’s 0.02 parts per billion or 20 parts per trillion. To put this into perspective, 1 ppb equals about a single drop of water in an Olympic-sized swimming pool.
In other words, chromium 6 is considered highly dangerous and there’s almost no safe level for the contaminant.
Testing Your Water for Chromium: Are You Affected?
If you want to find out whether or not you are affected by chromium 6 in your water supply, you can look up your water utility in the EWG Tap Water Database. The organization also provides this interactive map showing the counties that have chromium 6 in their tap water.
Please note: Not all counties were tested (marked in gray).
According to the database, the utilities with the highest average chromium 6 concentrations in 2010-2015 were:
- Norman in Norman, Oklahoma (39.3 ppb)
- First Mutual Water System in Rosamond, California (36 ppb)
- Dunnigan Water Works in Paso Robles, California (34.0 ppb)
Alternatively, you can test a direct water sample yourself using one of the widely available DIY test kits or send it to a professional laboratory.
These guys can help you out. They can test your water sample(s) for hundreds of different chemicals, organics, heavy metals, etc.
How to Remove Chromium 6 from Water
In order to achieve the public health goal of 0.02 ppb, you need a very powerful water filter to clean your water of chromium 6 and get anywhere near that threshold. Which, by the way, is the best way to deal with chromium 6 in your water at home: Filtration.
Regular activated carbon filters as they are used in most pitcher, faucet, and countertop units won’t suffice though. What’s needed is either ion exchange resin, reverse osmosis technology, or another specialized filtration methods.
NSF Certifications
Our pro tip: Look out for water filters or systems that have earned NSF certifications that warrant effective chromium 6 reduction.
- For reverse osmosis under sink/countertop systems the corresponding standard is NSF 53 and/or 58.
- For all non-RO filters check for Standard 53.
The chromium 6 reduction rate needs to be specifically stated on the test data, e.g. a lab report. Data on total chromium won’t suffice.
Does Reverse Osmosis Remove Chromium?
Does reverse osmosis remove hexavalent chromium? It does indeed! And it does one of the best jobs of all available filtration methods. The AquaTru, for example, is NSF Standard 58 certified to remove 97.2% of hexavalent chromium.
Brita, PUR & ZeroWater
Bad news: Neither Brita nor PUR filters are capable of chromium 6 reduction.
At least ZeroWater is NSF Standard 53 certified to reduce the metal by 99.6% on average, thanks to the ion exchange technology opposed to simple carbon filtration.
Does Boiling Water Remove Chromium 6?
Nope, boiling water does not really help with chromium 6 removal.
What Else Can You Do to Protect Your Family? Drinking Bottled Water?
Drinking nothing but bottled water is no guarantee for zero chromium 6 consumption. The carcinogen is already in our groundwater and surface water sources. Also, many bottlers use plain tap water for their products.
What you can (and should) do is carefully read the bottle label. It might state chromium levels. Water that was “purified by reverse osmosis” is also a good sign.
Frequently Asked Questions (FAQ)
- Do water filters remove chromium 6?
It depends on the type of water filter, but some do. You should look into reverse osmosis, ion exchange, and KDF. - Does bottled water have chromium 6?
It can contain chromium 6 for multiple reasons. Firstly, some bottled water is plain tap water filled into water bottles. If the tap water contained chromium 6, the bottled water will contain it, too. But even spring water may test for elevated chromium 6 levels in case the water source was contaminated. - Can you boil chromium 6 out of water?
A tiny bit of chromium 6 may evaporate from the water, but the vast majority won’t. - Does distillation remove hexavalent chromium?
Yes, water distillation removes hexavalent chromium from water.
Questions? Ask away!
About the Author Gene Fitzgerald
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