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K Series Carbon Filters (Pro)

Regular price $89.99 USD $89.99 0% OFF


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Filtration Stages: 4-Stage Raise PH Level

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Delivery & Return

Effective Date: July 2026
Last Updated: July 2026

At Purewell, we want you to feel confident when shopping for home and outdoor water filtration products. This Return & Refund Policy explains how returns, refunds, exchanges, damaged items, missing items, replacement filters, and product-specific return conditions are handled.

This Policy applies to purchases made directly through www.purewell.com. If you purchased a Purewell product through another retailer, marketplace, reseller, or distributor, please contact that seller directly for their return and refund policy.

1. 30-Day Return Window

We offer a 30-day return window. This means you may request a return within 30 days after receiving your item, provided that the item meets the eligibility requirements in this Policy.

To start a return, you must contact us before sending any item back. Items returned without prior authorization may not be accepted.

2. Return Eligibility

To be eligible for a return, the product must generally be:

  • Purchased directly from Purewell.com.
  • Returned within the applicable return window.
  • Unused, uninstalled, unfilled with water, and in the same condition as received.
  • Returned with original packaging, manuals, accessories, components, and proof of purchase.
  • Free from damage, stains, odors, contamination, scratches, dents, missing parts, or signs of improper use.

Purewell reserves the right to refuse a return or reduce the refund if the returned product does not meet these conditions, subject to applicable law.

3. Drinking Water Hygiene Policy

Because Purewell products are used for drinking water filtration, hygiene and product safety are important. Products that have been filled with water, installed, activated, primed, connected, used, or otherwise exposed to drinking water may not be eligible for resale or standard return processing.

For hygiene reasons, used water-contact components, opened consumable filters, and products that show signs of use may be non-returnable unless the return is related to a verified defect, damage, or incorrect item caused by Purewell.

4. Non-Returnable Items

The following items may not be eligible for return or refund unless required by law or unless the issue is caused by Purewell:

  • Used, installed, filled, activated, or water-exposed products.
  • Opened, used, activated, primed, expired, or contaminated replacement filters.
  • RO membranes, filter cartridges, carbon filters, gravity filter elements, outdoor filter elements, and other consumable filtration components once opened or used.
  • Products missing original packaging, manuals, accessories, or required components.
  • Products damaged by misuse, neglect, improper installation, unauthorized modification, or incompatible accessories.
  • Gift cards, digital products, final sale items, clearance items, or customized products where applicable.

5. Replacement Filters and Consumable Products

Replacement filters are consumable products. This includes gravity filters, RO filters, RO membranes, carbon filters, outdoor filter elements, bottle filters, straw filters, pump filters, and similar filtration components.

For safety and hygiene reasons, replacement filters may only be returned if they are unopened, unused, unprimed, uninstalled, and in original packaging, unless the item is defective, damaged, incorrect, or otherwise required by applicable law.

6. Gravity Water Filter Systems

For countertop gravity water filter systems, all chambers, lids, spigots, stands, water level windows, filters, washers, seals, and accessories must be returned complete and in original condition.

Gravity systems that have been assembled, filled with water, used for filtration, contaminated, dented, scratched beyond normal inspection, or returned with missing parts may not qualify for a full refund.

7. Countertop Reverse Osmosis Systems

Countertop RO systems must be returned with all tanks, pitchers, filters, membranes, power adapters, accessories, tubing, manuals, and packaging included, where applicable.

RO systems that have been installed, flushed, filled, activated, connected to power, connected to water, or used may be subject to inspection and may not qualify for a standard return due to hygiene, performance, and resale limitations.

8. Outdoor Water Purifiers

Outdoor water purifiers, filter pumps, water filter bottles, water filter straws, soft flasks with filters, and similar products must be returned unused, clean, dry, and complete with all original components.

Outdoor filtration products exposed to natural water sources, dirt, sand, mud, chemicals, biological material, or other outdoor contaminants may be non-returnable unless the issue is verified as a Purewell-caused defect, damage, or incorrect shipment.

9. Damaged, Defective or Incorrect Items

Please inspect your order as soon as it arrives. If you receive a damaged, defective, incorrect, or incomplete item, contact us as soon as possible so we can evaluate the issue and make it right.

To help us process the claim, please provide your order number, photos or videos of the product, photos of the packaging, shipping label, and a description of the issue. If the issue is caused by Purewell or our fulfillment process, you will not be required to pay return shipping for that issue.

10. Missing Items

If your order is missing a product, accessory, filter, manual, or required component, please contact us as soon as possible with your order number and photos of the package contents. We will review the issue and may send the missing item, provide a replacement, or offer another appropriate solution.

11. Return Shipping Costs

If the return is caused by customer preference, ordering error, change of mind, incorrect product selection, or other customer-related reasons, the customer is generally responsible for return shipping costs. The exact cost depends on the carrier or shipping service selected.

If the return is caused by Purewell, such as an incorrect item, damaged item, verified defect, or fulfillment error, Purewell will cover the return shipping cost or provide another suitable solution in accordance with this Policy and applicable law.

12. How to Start a Return or Exchange

To request a return or exchange, please use our Returns & Exchanges Portal, available on our website and in your customer account.

Simply enter your Order Number and the Email Address used for your purchase. If your order is eligible, you can submit your request online.

Once approved, we will email you a prepaid return label and return instructions. After we receive and inspect your returned item, we will process your refund or ship your replacement order, as applicable.

If you need assistance at any time, please contact us at info@purewell.com.

13. Return Address

Return addresses may vary depending on product type, order location, warehouse availability, and the reason for return. Please do not use any address published on the website or package unless we specifically provide that address for your return authorization.

Items sent to the wrong address, sent without authorization, or sent without tracking may be delayed, refused, or ineligible for refund.

14. Tracking Number Requirement

Once you ship a return, please provide the tracking number to Purewell promptly. We recommend using a trackable shipping service and keeping proof of shipment. Purewell is not responsible for returns lost in transit when the customer arranges return shipping.

15. Inspection and Refund Approval

After we receive your return, we will inspect the product to confirm condition, completeness, eligibility, and compliance with this Policy. We will notify you whether the refund is approved, partially approved, denied, or requires further review.

If the returned product is used, damaged, missing parts, missing packaging, contaminated, or not in eligible condition, we may reduce the refund, refuse the return, or return the item to you, subject to applicable law.

16. Refund Processing

If your refund is approved, the refund will generally be issued to the original payment method within 3–7 business days after approval. Your bank, credit card issuer, payment provider, or payment network may take additional time to process and post the refund.

Shipping fees, customs duties, import taxes, payment provider fees, and other third-party charges may not be refundable unless required by law or caused by Purewell’s error.

17. Exchanges

Where available, we may offer exchanges for eligible items. The fastest way to receive a different product may be to return the eligible item and place a new order after the return is approved.

Exchanges are subject to product availability, condition requirements, shipping limitations, and applicable law.

18. Promotions, Bundles and Gifts

Orders purchased with discounts, coupon codes, bundles, gifts, free items, or promotional offers may be refunded based on the amount actually paid after discounts. If a bundle or promotional set is returned partially, the value of any retained items, gifts, or discounts may be deducted from the refund.

Promotional items, free gifts, or bonus products may need to be returned with the original order to receive a full refund.

19. International Orders, Customs and VAT

For international orders, shipping costs, customs duties, import taxes, VAT, brokerage fees, or similar charges may be handled differently depending on destination country and checkout terms. Unless otherwise required by law or caused by Purewell’s error, customs duties, import taxes, VAT, and third-party fees are generally not refundable by Purewell.

20. EU and UK Consumer Rights

If you are a consumer located in the European Union, United Kingdom, or another jurisdiction with mandatory consumer protection rights, you may have additional rights that apply regardless of this Policy.

For eligible online purchases in the European Union, consumers generally have the right to withdraw from the contract within 14 days after receiving the goods, subject to legal exceptions. UK online consumers generally have similar cancellation rights. Certain items, including goods that are not suitable for return for health protection or hygiene reasons once unsealed after delivery, may be excluded where permitted by law.

Nothing in this Policy limits your mandatory statutory rights.

21. Warranty Claims vs Returns

A return request is different from a warranty claim. Returns are generally handled within the return window and based on product condition. Warranty claims are handled under the applicable product warranty and may relate to defects in materials or workmanship during the warranty period.

If your issue occurs after the return window, please contact us so we can determine whether warranty support may apply.

22. Water Quality and Performance Expectations

Water filtration performance, water taste, water clarity, flow rate, TDS readings, and filter lifespan may vary depending on local water quality, source water conditions, contaminant levels, water temperature, usage frequency, maintenance, and filter age.

Dissatisfaction based solely on taste preference, flow rate expectations, local water conditions, or misunderstanding of filtration technology may not qualify as a defect unless verified through product evaluation or required by applicable law.

23. Policy Updates

We may update this Return & Refund Policy from time to time to reflect changes in our products, operations, logistics, legal requirements, or customer service procedures. The latest version will be posted on this page with an updated date.

24. Contact Us

If you have questions about returns, refunds, exchanges, damaged items, missing items, or warranty support, please contact Purewell through the contact information provided on our website.

We're Here to Help

Need help with your return, exchange, warranty, or product? Contact our team—we'll be happy to assist you.

Contact Support

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Test Reports

Ask about K Series Carbon Filters (Pro)

Product Details
Product Type Core Filter
Filtration Stages 3-Stage / 4-Stage
Compatibility Purewell K Series & SS Series Filter Systems
Package Quantity 1 Box / 2 Filters
Filter Life Up to 10,000 Gallons per Box
Flow Rate Approx. 1.9 Gallons per Hour with 2 Filters Installed
Use For Gravity Water Filter Systems
Filter Size Approx. 3.27 in × 6.69 in / Φ8.3 × 17 cm
Box Weight Approx. 2.03 lb Net / 2.14 lb Gross
Filtration Options & Item Numbers

3-Stage Advanced

Item No. K8011
Filter Material
  • Activated Carbon
  • Silver Ion
  • Hollow Fiber UF Membrane
Key Functions
0.01 μm Pore Size Removes Bacteria Reduces Chlorine

4-Stage Reduce Fluoride

Item No. K8016
Filter Material
  • Activated Carbon
  • Silver Ion
  • Fluoride Reduction Material
  • Hollow Fiber UF Membrane
Key Functions
0.01 μm Pore Size Removes Bacteria Reduces Chlorine Reduces Fluoride

4-Stage Raise PH Level

Item No. K8017
Filter Material
  • Activated Carbon
  • Silver Ion
  • Alkaline Material
  • Hollow Fiber UF Membrane
Key Functions
0.01 μm Pore Size Removes Bacteria Reduces Chlorine Raises PH Level
Use Notes
01

Choose 3-Stage Advanced for everyday filtration with activated carbon, silver ion, and UF membrane filtration.

02

Choose 4-Stage Reduce Fluoride if you want added fluoride reduction in addition to the core filtration layers.

03

Choose 4-Stage Raise pH Level if you want core filtration with an added alkaline material layer.

04

Designed for Purewell K Series and SS Series gravity water filter systems.

05

Also works as a replacement option for select ProOne Big+ / Big II Series and Berkey BB9-2 style systems, including Travel, Big, Royal, Imperial, Light, and Crown Berkey Series.

06

Flush filters before first use and replace them when the rated capacity is reached or when water flow becomes noticeably slower.

Note: Filter life and flow rate may vary depending on source water quality, usage frequency, and maintenance conditions. Always check your system size and filter compatibility before purchase. Third-party brand and model names are used for compatibility reference only.
User Guide
Carbon Filter Guide

How to Use the Carbon Filter

Follow these simple steps to prepare, install, and use your carbon filter correctly.

Step 01

Prime the Carbon Filter

Before installation, place the washer and wing nut correctly, then rinse the carbon filter under running water.

1
Remove the wing nut and filter washer, then place them back on the threaded stem in the correct position.
2
Make sure the washer and wing nut are positioned securely before connecting the filter to the faucet.
3
Rinse the carbon filter for at least 60 seconds, or until the water runs clear.
Tip: Priming helps flush loose carbon particles before the filter is installed.
Visual Guide Assemble → Tighten → Rinse
Place the washer and wing nut on the filter stem.
→
Tighten the wing nut until the parts fit correctly.
→
Rinse for at least 60 seconds until water runs clear.
Step 02

Install the Carbon Filters

Insert the threaded rod of each carbon filter through the upper chamber, then secure it from below.

1
Place the threaded rod of the carbon filter through a filter washer.
2
Insert the filter into the hole in the upper chamber.
3
From below, add the remaining washer and wing nut, then tighten securely.
Tip: Make sure each filter is stable and sealed before filling the upper chamber.
Visual Guide Upper Chamber → Installed System
Insert filters into the upper chamber and secure from below.
→
The system is ready after both filters are installed.
Step 03

Important Notice

Follow these guidelines to help maintain normal water flow and avoid improper use.

1
Do not use the filter to filter hot water.
2
This filter cannot remove color from beverages such as cola.
3
This filter cannot reduce the TDS value of water.
4
At the beginning of filtration, keep enough water in the upper chamber to support gravity-fed water pressure.
5
If the filter will not be used for more than 3 days, remove all filter elements and allow parts to dry.
6
Do not use detergents to clean the filter elements, as this may cause clogging.
Please follow the installation guide and use the filter correctly for proper operation.
Care Tips Use Correctly
°
No Hot Water
Use only cold or room-temperature water.
×
No Colored Drinks
Do not use the filter for cola or other colored beverages.
T
Does Not Reduce TDS
This filter is not designed to reduce TDS values.
≈
Keep Enough Water
Sufficient water helps maintain gravity-fed flow.
3
Dry if Unused
If unused for over 3 days, remove filters and let parts dry.
!
No Detergents
Clean without detergents to help prevent clogging.
How It Works

How Gravity Filtration Works

Water flows from the upper chamber through the filter elements by gravity, then collects in the lower chamber and is ready to dispense.

1. Add Water

Pour water into the upper chamber. No electricity or plumbing is required.

2. Gravity Pulls Water Down

Water naturally moves through the filter elements by gravity.

3. Filtered Water Collects Below

Filtered water collects in the lower chamber and is ready to pour from the spigot.

Filter Replacement

Filter Replacement Guide

Replacing filters on time helps your filtration system keep working properly. It also helps maintain water flow, drinking water taste, and everyday use confidence.

!
Track Usage Time & Filter Life

Filter life may vary by water quality, usage frequency, and total water volume filtered.

Rated Filter Life Reached

Replace the filters when they reach the rated lifespan listed for your filter model.

Water Flow Becomes Slower

If filtering takes much longer than usual, clean or replace the filters as needed.

Taste or Odor Returns

If unwanted taste or smell becomes noticeable again, it may be time to replace the filters.

Source Water Matters

Rain, river, stream, or well water may shorten filter life compared with regular tap water.

What to Check Before Replacing Filters
Confirm Compatibility

Choose filters that match your filtration system, filter series, and setup.

Prepare New Filters

Prime, rinse, or flush new filters according to the product instructions.

Check Seals & Washers

Make sure washers, seals, and threaded parts are installed correctly.

Clean the System

Empty and clean the upper and lower chambers before installing new filters.

Replace Sets Together

If your system uses paired filters, replace matching filters together when needed.

Record the Date

Write down the replacement date and set a reminder based on your usage.

Filter & System Replacement Checklist

Use this checklist to choose the right replacement filter for your Purewell system and check whether it may also fit select compatible systems from other brands.

Filter Category Filter Type Fits Purewell Systems Other Compatible Systems
K Series Carbon Filters (Pro) Core Filter SS Series and K Series filtration systems. Select ProOne Big+ / Big II and Berkey BB9-2 style systems.
K Series Carbon Filters Core Filter SS Series and K Series filtration systems. Select ProOne Big+ / Big II and Berkey BB9-2 style systems.
K Series Carbon Filters (Classic) Core Filter SS Series and K Series filtration systems. Black Berkey Elements style systems and select Berkey gravity systems.
K Series Ceramic Filters Core Filter SS Series and K Series filtration systems. Most gravity-fed systems from major brands, including Berkey, ProOne, Alexapure, Waterdrop, Doulton, Boroux, Culligan, and more.
SS Series Square Carbon Filters Core Filter SS Series and K Series filtration systems. Select ProOne Big+ / Big II and Berkey BB9-2 style systems.
SF Series Multi-Functional Filter Core Filter SF Series filtration systems. Select Zero pitchers and dispensers.
BO Series Unique Compound Filter Core Filter BO Series filtration systems only. Not intended for K Series, SS Series, or other gravity filtration systems.
K Series Specialty Add-On Filters Supplemental Filter Use together with K Series or SS Series core filters. Select Travel, Big, Royal, Imperial, Light, and Crown Berkey models as an additional filter option.
Filter replacement frequency directly affects the service cycle of your filtration system. Timely replacement helps support water flow, filtration performance, drinking water taste, and long-term system reliability. Actual filter life may vary based on source water quality, usage frequency, and total water volume filtered.
Shop Replacement Filters
Video

Carbon Filter Installation & Care Videos

Watch these quick video guides to prepare, install, and maintain your Purewell carbon filters correctly. Proper setup and care help support steady water flow and everyday filter performance.

Pre-Use Preparation

Clean Before Installation

This video shows how to clean or rinse Purewell carbon filters before installation. Preparing the filters before first use helps support a cleaner setup process.

Recommended before first installation Helps prepare new carbon filters for use Useful before installing or replacing filters
Installation Guide

Carbon Filter Installation

This video shows how to install Purewell carbon filters for compatible gravity water filter systems. Follow the guide before first use or when replacing old filters.

Suitable for Purewell carbon filter setup Helps confirm correct filter position Recommended before first use or filter replacement
Maintenance Guide

Carbon Filter Care & Cleaning

This video explains how to maintain Purewell carbon filters, especially when the filter becomes dirty or water flow starts to slow down during use.

Useful when filters become dirty Helps maintain smoother water flow Supports daily care and long-term use

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NSF Certified for Your Health

Independently tested to meet NSF/ANSI 42 & 372 standards, the highest level of trust in water filtration.

Lead-Free Guarantee (NSF/ANSI 372)
Certified lead-free materials to keep your water worry-free.

See Test Report Details
  • 5 stars: 12 (86%)
  • 4 stars: 2 (14%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
T
T.S.
Works Great

The 2 filters fits perfectly in my Berkey water tank. It filters the water just fine and the flow rate is good

M
M.
Average.

First off, Berkey got in trouble for over-promising on their stats of water filtration. An off brand like this is even less likely to have decent filtering. In my experience these filters filter twice as fast as Berkeys, which you may think is nice, but to me indicates it filters less. Take caution with these filters.

M
M.
Work well

Flow rate on these is great. They were easy to prime and install. I feel that these work just as well as the more expensive filters. Water taste is just as good.

G
G.
Perfect fit

I bought a Berkey off Marketplace so I needed filters for it. I ordered these, watched some YouTube videos, charged them and installed. They fit great, water went through fine so these are great replacements, especially since Berkey isn't selling the filters right now. Highly recommend though I do admit I don't have the testers to see if these filter out all the contaminants but I'm having faith that they are better than nothing and the Berkey holds more than my zero water filter pitcher so this is more convenient for when I have guests.

A
A.K.
Great Value Carbon Filters for Clean Water

This 2 pack of carbon filters are a fantastic replacement for many gravity water systems and offers excellent value at a fraction of the cost of name brand options. Made from coconut shells, they effectively reduce contaminants like chlorine, lead, mercury, and more, ensuring safe and clean drinking water.

The filters are easy to install and require only hand tightening to secure them. Although nothing was included about priming and flushing rhe filter before use, I still scrubbed it down with water as I have with every filter like this I have ever used. Each filter can handle up to 3,000 gallons, so with this 2 pack, you'll get 6,000 gallons of filtered water.

I am using these in my Propur travel filter and they work great. After priming, they have consistently provided clean, great tasting water, and the filtering process is simple and straightforward. They are a solid choice for those looking for reliable filtration without the premium price tag.

S
S.
Not an exact match to a Berkey filter.

I got these filters for our Berkey. They appear to be able to work. They aren't an exact match as they are a bit shorter, not that that may matter, but just to let others know that it isn't an 'exact' match. I do see that these are now showing as 'unavailable'.

W
W.
Filters

I haven't needed to switch out my filters yet, but these seems perfect! They are the right size and style that we need for ours. I have no doubt that they will work. We always test our water with strips, so if they aren't doing what they're supposed to, I will come back and edit this.

1
1.
Activated Carbon Gravity Filters

This pair of Activated Carbon Gravity Water Filters are NSF/ANSI Certified and are excellent in performance for safe drinking water.
Perfect replacement filters for many gravity water systems and at a fraction of the cost of name brand filters making them an outstanding value.
Capable of effectively filtering up to 6000 Gallons of water before replacing them depending on the quality of the source water filtered, the clearer the source water the better. Yes, these are ideal for extraordinary clean drinking water production with long filtration usage.
These need to be flushed and primed before use with the included brown colored washer, detailed Instructions are included too.
Installation is very easy to accomplish by hand tightening the mounting nuts on the stems of the filters with their washers to seal the connections, again after a good flush and priming.
Excellent quality and Value!

J
J.
Works well!

These fit perfectly in my Burke water filter. The quality is great! This is a way more affordable option and they have the third party lab tests to prove their quality!

S
S.
Made from Coconut Shell, Filters Up to 6,000 Gallons!

These carbon block filter cartridges are great. These filters are made from coconut shell.

They are a perfect fit for our Berkey Light water filtration system.

They reduce many contaminants like Chlorine, Aluminum, Copper, Iron, Lead, Mercury, Nickel, Arsenic, Rust, Sediment, Foul Tastes and Odors. A full list is provided on the box.

Detailed instructions on how to prepare and prime the filters are printed on the box. Make sure to follow the instructions and discard the first batch of water that is filtered. We use a water test kit (not included but we recommend having) to double check the purity of the filtered water.

Each filter has a capability of filtering 3,000 gallons so that totals 6,000 gallons for the two.

There are no instructions about cleaning the filters, but we normally scrub them with a rough sponge and cold water once a month. Make sure not to use any soap or cleaners.

We are pleased with these carbon filters.

s
s.
.Great alternative water filter filters

I have the largest Berkey water Purfication system that I absolutely love. The only drawback to it is the price of the filters from Berkey themselves. Although the filters last for over 6000 gallons I don't have to change them out very often. However when I do it it's like I'm taking out the national debt when buying them directly from the company. However these filters are much more reasonably priced and they work just as well as the ones from The company do. Although I can't say for sure all the scientific jargon however they the company, state that if you do the red Die test. That is where you put red dye in your water and let the filter filter out the impurities you will have clear water. I put these in the check and make sure they work they do work great they do remove everything for the water and the water taste just the same as it does with the high priced filters. I am very happy with this Know that I will keep them in my packages for replacement of the water. Filters. I usually have to change them about twice a year. They change out my filters in June and the end of December. I stretch it as far as I can because of the cost however with these now I can change them on a much more frequent basis and I plan on acquiring at least one other package of them so that I can keep them in reserve. Great product nice price point and they work

B
B.
Extra set of filters

Always nice to have a spare set of aftermarket water filters for my Big Berkey. Haven't installed these yet (still have about 6 months left on my current set of filters), but they look pretty much the same from the outside, so should be compatible. Can't comment on water quality yet.

T
T.C.
Fit Well

These fit perfectly into our Royal Berkey. Like all filter like this, they are a bit of a pain to prime, but that’s just part of it. They seem to work well, and are filtering as expected. The test will come to see how long they last, but so far, I am pleased with their performance.

B
B.M.E.
Certified Water Filter, Replacement for Berkey®

I have had my Berkey for 3 years and these filters fit them just fine.

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