BO Series Countertop Gravity Water Filter System 2.25 Gallon

Name: Purewell® – BO Series - 2.25 Gallons 304 Stainless Steel Multifunctional Gravity-fed Water Filter System, Reduce Fluoride, Chlorine, Bacterias, Heavy Metal, NSF Certified, Berkey Alternative Filter
Rating: 5.00 (1 reviews)

Regular price $189.99 USD ~~$189.99~~ 0% OFF

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With Water Level Window

Compound Filter

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.

More Than a Product Claim: Evidence You Can Check

Certification standards and independent test reports help customers understand what a filtration product has actually been evaluated for. Instead of relying only on packaging, advertising, or marketplace descriptions, you can review the applicable standard, product model, tested claim, and supporting documentation.

Documentation Across Purewell Filtration Products Purewell filtration systems and replacement filters are supported by corresponding certification and/or test documentation. Customers can review system documents, filter documents, and performance reports through the Purewell Test Reports page.

Verifiable Evidence

42

NSF/ANSI 42

Drinking Water Treatment Units — Aesthetic Effects

What Does It Mean in Everyday Language?

This standard evaluates drinking-water treatment products for specified effects that influence the appearance, taste, smell, or everyday drinking experience of water.

Chlorine reduction, when listed

Taste and odor reduction, when listed

Particulate reduction, when listed

Materials, construction, and performance requirements

i

Certification Is Claim-Specific NSF/ANSI 42 does not automatically mean that a product reduces every contaminant. Check the certificate or listing for the exact model and certified reduction claims.

372

NSF/ANSI/CAN 372

Drinking Water System Components — Lead Content

What Does It Mean in Everyday Language?

This standard evaluates the lead content of materials and components that come into contact with drinking water, using defined calculations and verification procedures.

Evaluates wetted product components

Verifies applicable lead-content limits

Reviews materials used in the water pathway

Supports lead-content compliance verification

i

Lead Content Is Not Lead Reduction NSF/ANSI/CAN 372 evaluates lead content in product materials. It does not by itself certify that a filter removes lead already present in the source water.

From a Marketing Claim to Verifiable Evidence

Reliable documentation connects a standard to an identifiable product, a defined test scope, and a report or certificate that customers can review.

Identify the Standard Confirm whether the document refers to NSF/ANSI 42, NSF/ANSI/CAN 372, or another applicable standard.

Match the Product Check that the brand, product type, component, or model matches the item being sold.

Read the Test Scope Review exactly what was evaluated, including the reduction claim, material requirement, test condition, or performance category.

Review the Evidence Open the certificate, listing, or laboratory report instead of relying only on a badge or unsupported product description.

Product with Verifiable Documentation Claims can be checked against supporting evidence.

The applicable product or component can be identified.
The meaning and scope of the standard can be reviewed.
Specific performance claims can be checked against a report.
Customers can distinguish certification from general testing.
Material and performance claims have a documented basis.

Documentation does not mean every possible contaminant has been tested. It provides evidence for the specific scope shown in the applicable certificate or report.

Product Without Accessible Evidence Important claims may be difficult to confirm.

A standard logo may appear without a matching certificate.
The tested model may differ from the product being purchased.
Broad removal claims may exceed the actual test scope.
Lead-content compliance may be unclear or undocumented.
Customers may be unable to verify the source or date of a report.

An unavailable report does not automatically prove that a product is unsafe. However, it prevents customers from independently confirming the advertised certification and performance claims.

Documentation Available from Purewell

Purewell organizes supporting documents by system, filter, standard, and filtration performance so customers can review the evidence relevant to their product.

Filter System Documents Certification or test documentation associated with applicable complete filtration-system components.

Replacement Filter Documents Supporting documentation associated with applicable Purewell replacement filters and filter elements.

Performance Test Reports Laboratory reports covering specified filtration-performance categories under defined test conditions.

Customer-Accessible Files Downloadable documents provide more transparency than a badge, short claim, or marketplace product description alone.

Important Certification Notes

Reading the standard correctly is as important as seeing the certification or test badge.

01

Check the Exact Product or Component Certification and test results should be matched to the applicable product, filter, component, model, or documented product family.

02

Check the Exact Certified Claim A product certified under NSF/ANSI 42 may support only the reduction claims specifically shown in its certificate or listing.

03

372 Does Not Mean Lead Removal NSF/ANSI/CAN 372 concerns lead content in wetted materials. Lead reduction from source water requires a separate applicable filtration-performance claim.

04

Certification and Testing Are Different A certification, a component certification, and an independent laboratory test report are different forms of evidence and should be described accurately.

05

Review Test Conditions Results may depend on source-water conditions, flow rate, capacity, product setup, test protocol, and filter condition.

06

Replace Filters as Directed Certification or testing does not make a filter permanent. Follow the applicable installation, flushing, use, and replacement instructions.

Review the Documents Before You Choose

View Purewell system documents, replacement-filter documents, and filtration-performance reports. Select the files that correspond to the product and performance claim you want to verify.

View Test Reports

Hollow Fiber Ultrafiltration Technology

Fine Physical Filtration with a Hollow Fiber UF Membrane

Thousands of fine, straw-like membrane fibers create a compact physical filtration barrier. Water passes through microscopic pores, while larger suspended particles are retained on the other side of the membrane.

Standard UF Membrane Configuration Hollow fiber UF membrane technology is built into applicable Purewell portable filtration systems as a core physical filtration component—not an optional add-on.

Purewell Standard

Physical Separation Process

Source Water

Filtered Water

Larger suspended particles are retained

Water passes through microscopic membrane pores

How the Membrane Works

The membrane performs filtration through physical separation rather than adding chemicals to the water.

1

Source Water Enters Water reaches the outside of the hollow fiber membrane bundle.

2

Water Crosses the Membrane Wall Gravity, pressure, or the system pump moves water through the microscopic pores in each fiber.

3

Larger Particles Are Retained Suspended matter larger than the membrane pores is physically blocked from passing through.

4

Filtered Water Flows Out Water travels through the hollow center of the fibers and exits the filtration system for use.

Fine Physical Barrier Helps separate suspended sediment, fine particles, turbidity, and other contaminants larger than the membrane pores.

Large Filtration Area Bundles of narrow fibers provide a large membrane surface area within a compact filter structure.

Practical Water Flow Multiple hollow fibers work together to balance fine filtration with practical flow for portable use.

No Chemical Additives The membrane filters through physical separation and does not add treatment chemicals to the source water.

✓ Designed to Help Reduce

Suspended sediment and fine particles
Turbidity and visible particulate matter
Microplastics larger than the membrane pores
Certain microorganisms, depending on membrane specifications

i Understand the Filtration Limit

Does not desalinate water or remove dissolved salts
Does not soften hard water by itself
May not reduce all dissolved chemicals or metal ions alone
Additional filter media may be used for broader filtration

Important Use and Care Notes

Proper use and maintenance help protect membrane performance and maintain water flow.

01

Choose the Clearest Available Water Avoid heavily polluted water whenever possible. Allow sediment to settle or use a pre-filter when the source water is highly turbid.

02

Do Not Use with Saltwater or Chemicals The membrane is not designed for seawater, industrial wastewater, oil-contaminated water, or chemically polluted sources.

03

Rinse or Backwash as Directed Clean the membrane according to the product instructions when flow becomes slower due to accumulated particles.

04

Protect the Wet Membrane from Freezing Once used, water may remain inside the fibers. Freezing can damage the membrane structure and affect filtration integrity.

05

Follow Storage Instructions Clean and store the filter as described in the product manual when it will not be used for an extended period.

06

Replace at the End of Service Life Replace the filter when its rated capacity is reached, the membrane is damaged, or normal flow cannot be restored after cleaning.

Filtration performance varies by product model, membrane specification, source-water quality, operating conditions, and maintenance. Hollow fiber UF filtration is one component of the complete filtration system.

Silver Ion Bacteriostatic Support

Built-In Protection for the Filter Media

Silver-ion-treated media is designed to help inhibit bacterial growth within the filter material. It supports filter-media hygiene between uses while working alongside the system’s primary filtration technologies.

Standard Silver-Ion-Treated Filter Media Where silver-ion-treated media is listed in the product specification, it is included as part of the standard Purewell filter construction—not offered only as an optional upgrade.

Purewell Standard

Protection Within the Filter Media

Water Enters the Filter

Water Continues to the Next Stage

Ag+

Silver ions are integrated into the treated filter media

Helps inhibit bacterial multiplication within the media

Supports the filter material—it is not a standalone water disinfectant

How Silver Ion Support Works

Silver ions are incorporated into selected filtration media to provide bacteriostatic support inside the cartridge.

1

Silver Ions Are Integrated into the Media The silver-ion component is distributed within or applied to the selected filter material during manufacturing.

2

Water Contacts the Treated Surface As water moves through the cartridge, it contacts the silver-ion-treated filtration media.

3

Growth Within the Media Is Inhibited The silver-ion treatment helps limit bacterial multiplication on or within the filter material during normal use.

4

Primary Filtration Stages Continue the Work Carbon, ceramic, UF, or other specified filtration stages perform the system’s primary contaminant-reduction functions.

i

Bacteriostatic Does Not Mean Sterilizing Silver-ion-treated media is intended to help control growth inside the filter. It should not be presented as proof that bacteria, viruses, or other microorganisms have been removed from the source water.

Helps Inhibit Growth Supports control of bacterial growth within the treated filtration material during normal product use.

Supports Filter-Media Hygiene Helps manage microbial activity inside the filter material rather than serving as the system’s primary filtration barrier.

Integrated into the Cartridge The treated material is built into applicable Purewell filters and does not require the user to add a separate treatment chemical.

Complements Other Media Works alongside activated carbon, ceramic, UF, or other specified filtration materials in a multi-stage filter design.

✓ Designed to Support

Bacteriostatic protection within treated filter media
Control of bacterial multiplication inside the cartridge
Filter-media hygiene during normal product use
Multi-stage filtration when paired with other media

i Not Intended to Replace

A validated microbiological filtration barrier
Boiling, disinfection, or official boil-water guidance
UF, RO, UV, or other specified treatment technologies
Timely cleaning, flushing, and filter replacement

Important Use and Care Notes

Silver-ion support does not replace correct filter preparation, maintenance, or appropriate source-water selection.

01

Flush Before First Use Prepare and flush the filter according to the product instructions before using the filtered water for drinking.

02

Use an Appropriate Water Source Silver-ion-treated media alone does not make sewage, industrially polluted water, saltwater, or other unsafe sources suitable for drinking.

03

Do Not Open or Modify the Filter Do not remove, add, regenerate, or alter the internal filter media. Use the cartridge only in its original configuration.

04

Replace the Filter on Schedule Bacteriostatic support does not make a filter permanent. Replace it when the rated capacity or recommended service period is reached.

05

Avoid Hot Water and Chemicals Do not use hot water, bleach, detergents, or treatment chemicals unless they are specifically permitted in the product instructions.

06

Avoid Extended Water Stagnation Follow the recommended flushing and storage procedure after extended periods of non-use or when water has remained inside the system.

07

Follow Public Health Advisories During a boil-water notice or known microbiological event, follow instructions from the relevant local health authority.

08

Check the Product Specification Silver-ion content, media type, intended use, and performance claims may vary between Purewell filter models.

Silver-ion-treated media is intended to help inhibit bacterial growth within the filter material. It is not a standalone disinfectant and does not by itself establish that source-water microorganisms have been removed. Performance depends on the media formulation, product design, water quality, operating conditions, maintenance, and timely replacement. Refer to the applicable Purewell product specifications and test information for model-specific claims.

Activated Carbon Adsorption Technology

Porous Carbon Designed to Improve Water Taste and Odor

Activated carbon contains a network of microscopic pores that creates a large internal surface area. As water moves through the media, certain compounds are attracted to and held on the carbon surface through a process known as adsorption.

Standard Activated Carbon Filtration Media Where activated carbon is listed in the product specification, it is included as part of the standard Purewell filter construction rather than offered only as an optional upgrade.

Purewell Standard

Adsorption Inside the Carbon Media

Incoming Water

Water Flows Out

Cl

Water carries chlorine, taste, odor, and certain organic compounds

Certain compounds are held within the porous carbon surface

Water continues through the filtration system

How Activated Carbon Works

Activated carbon primarily works through adsorption. Compounds are attracted to the carbon surface instead of simply being screened out by pore size.

1

Water Enters the Carbon Media Source water flows around and between the activated carbon particles inside the filter.

2

Water Contacts the Porous Surface Microscopic pores provide a large internal surface area for water and dissolved compounds to contact.

3

Certain Compounds Are Adsorbed Chlorine, taste-and-odor compounds, and certain organic substances may be attracted to and held on the carbon surface.

4

Water Continues Through the Filter After contacting the carbon media, water moves to the next filtration stage or exits the system, depending on the filter design.

Improves Taste and Odor Helps reduce compounds that can create unwanted tastes or odors in drinking water.

Helps Reduce Chlorine Activated carbon is commonly used to help reduce chlorine taste and odor in treated municipal water.

High Internal Surface Area A network of microscopic pores creates extensive contact area within a compact amount of filter media.

No Treatment Chemicals Added Activated carbon performs through surface adsorption and does not require chemicals to be added to the water.

✓ Designed to Help Reduce

Chlorine taste and odor
Unpleasant tastes and smells
Certain volatile organic compounds
Certain adsorption-sensitive organic substances

i Understand the Filtration Limit

Does not normally reduce dissolved salts or TDS
Does not soften hard water by itself
Is not a complete microbiological barrier on its own
Does not reduce every contaminant without additional media

Important Use and Care Notes

Correct preparation and timely replacement help maintain adsorption performance and water quality.

01

Flush Before First Use Flush the filter according to the product instructions before drinking. This helps remove loose carbon fines and trapped air.

02

Temporary Carbon Fines May Appear A small amount of dark carbon dust may appear during initial rinsing. Continue flushing until the water runs clear.

03

Use Within the Recommended Temperature Range Do not use hot water unless the specific product instructions state that the filter is designed for hot-water use.

04

Use with an Appropriate Water Source Activated carbon alone does not make microbiologically unsafe, industrially polluted, or saltwater sources suitable for drinking.

05

Replace the Filter on Schedule Adsorption sites gradually become occupied. Replace the filter when its rated life is reached or when taste and odor reduction noticeably declines.

06

Follow Storage Instructions Clean and store the filter as directed when the system will not be used for an extended period. Do not leave stagnant water in the system longer than recommended.

Filtration performance depends on the activated carbon type, carbon quantity, contact time, water quality, flow rate, product design, and maintenance. Specific contaminant-reduction claims should be based on the applicable Purewell product specifications and test results.

Ask about BO Series Countertop Gravity Water Filter System 2.25 Gallon

Product Details

System Overview

01

Product Series BO Series Gravity Water Filter System

Countertop gravity water filtration for daily use.

System Capacity 2.25 Gal

Recommended for 3–5 people.

Item Number K8772A

2.25 Gal system version.

Main Material 304 Stainless Steel

Durable, easy to clean, and designed for long-term countertop use.

Water Level Window Built-In Viewing Window

Helps you check the water level more easily.

System Size Φ22 × 66 cm (with stand)

Measured with the stand installed.

Water Temperature 45°F–100°F

Use cold or room-temperature water only.

Water Sources Tap / City / Well / Rain / Stream / River

Source water quality may affect filter life and flow rate.

Note: For best results, use clear source water. Outdoor or untreated water may shorten filter life depending on water quality.

Choose Your BO Series Core Filters

02

Filter Selection Required

This 2.25 Gal BO Series system requires BO Series Core Filters. Select one filter option based on your water needs. Each filter selection includes 1 Box / 2 Filters.

Filter quantity: For this BO Series system, use 1 Box / 2 Filters. Install both filters together for normal use.

Key Filter Indicators

03

Filter Life Up to 6,000 Gallons per Box

Actual life may vary by source water quality and usage frequency.

Flow Rate Approx. 2.38 Gallons per Hour

Based on 2 filters installed. Flow may slow as filters collect impurities.

Filter Quantity 1 Box / 2 Filters

Use both filters together for normal BO Series system operation.

Pore Size 0.01 μm

Designed with hollow fiber UF membrane filtration.

Filter Type Core Filter

Designed for gravity water filter systems.

Filtration Options 6-Stage / 9-Stage

Choose from multifunctional or multifunctional fluoride reduction options.

Compatibility Only for BO Series Systems

Not compatible with other filter system types.

Filter Size Approx. 3.15 in × 6.42 in / Φ8 × 16.3 cm

Check system compatibility before purchase.

Filter Use Notes

04

Flush Before First Use

Flush the filters before first use and discard the first batch of filtered water.

Replace On Time

Replace filters when the rated capacity is reached or when water flow becomes noticeably slower.

BO Series Only

These filters are only compatible with Purewell BO Series filter systems.

Source Water Matters

Filter life and flow rate may vary depending on source water quality, usage frequency, and maintenance conditions.

User Guide

Installation Guide

How to Set Up Your Countertop Gravity Water Filter System

Follow these simple steps to assemble the system, install the core filters, flush before first use, and prepare it for daily use.

Step 01Prepare Parts Step 02Assemble Lid Step 03Install Spigot Step 04Install Filters Step 05Stack System Step 06Flush Before Use

Prepare and Clean the Parts

Before assembly, check the main parts and clean the system components.

1
Wash Your Hands Handle the system with clean hands before setup.
2
Check Included Parts Make sure the chambers, lid, spigot, stand, and core filters are ready.
3
Clean Before Assembly Rinse the chambers and accessories before first use.

Note: Use cold or room-temperature water only. Do not use hot water.

Assemble the Lid Knob

Attach the lid knob to the lid and secure it with the included hardware.

1
Place the Lid Knob Insert the lid knob into the center hole of the lid.
2
Add Washer and Gasket Place the washer and gasket in the correct position.
3
Tighten the Screw Fasten the knob until it feels stable.

Tip: Do not overtighten. The lid knob should feel secure but not forced.

Install the Basic Spigot

Install the basic spigot into the lower chamber before stacking the system.

1
Insert the Spigot Place the spigot through the lower chamber hole with the gasket and washer.
2
Add the Inside Parts Place the remaining washer and gasket from the inside of the chamber.
3
Tighten the Hex Nut Use the wrench to secure the spigot vertically.

Before filling: Make sure the spigot is closed to help prevent leaking.

Install the Core Filters

Use the required number of core filters for your system model.

1
Insert the Core Filters Place the core filters through the holes in the upper chamber.
2
Secure the Filters Use the filter washer and wing nut to hold each core filter in place.
3
Check Stability Make sure each core filter is firmly installed before adding water.

Note: This guide uses “core filters” only. Filter type and quantity may vary by system option.

Stack the Chambers and Stand

Set the system together in the correct order before flushing.

1
Attach the Anti-slip Mat Place the anti-slip mat on the bottom of the lower chamber.
2
Place the Lower Chamber on the Stand Set the lower chamber securely on the stand.
3
Add the Upper Chamber and Lid Place the upper chamber into the lower chamber, then cover it with the lid.

Stability check: Make sure the system sits flat and stable before filling water.

Flush Before First Use

Flush the system before drinking water from it for the first time.

1
Fill the Upper Chamber Add water and let it move through the core filters.
2
Discard the First Batch Pour out the first filtered water from the lower chamber.
3
Repeat 2–3 Times After flushing, the system is ready for regular use.

Tip: Fill the upper chamber as much as possible at the beginning to support gravity-fed filtration.

System Type Countertop Gravity System

Filter Reference Core Filters

First Use Flush 2–3 Times

Water Temperature 40°F–100°F / 4–37°C

How It Works

How the Filter System Works

Water is added to the upper chamber and flows downward through the filter elements by gravity. After passing through the filters, the filtered water collects in the lower chamber and is ready to dispense.

1. Fill the Upper Chamber

Pour water into the top chamber. The system works without electricity, plumbing, or complicated setup.

2. Gravity Pulls Water Through the Filters

Water naturally moves downward through the filter elements, where the filtration process takes place.

3. Filtered Water Collects Below

Once filtered, the water collects in the lower chamber, ready to use whenever you need it.

4. Dispense When Needed

Open the spigot to pour filtered water for drinking, cooking, or everyday use.

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

List

System Package

Main parts included for the countertop gravity water filter system.

Upper Chamber× 1
Lower Chamber× 1
Lid× 1
Lid Knob× 1
Knob Washer× 1
Knob Gasket× 1
Knob Screw× 1
Anti-slip Mat× 1
Stand× 1
User Manual× 1

Basic Spigot Parts

Parts used to install the basic stainless steel spigot.

Basic Spigot× 1
Spigot Gasket× 2
Beveled Washer× 2
Spigot Hex Nut× 1
Wrench× 1
Screwdriver× 1
Plastic Spigot× 1
Silicone Plug× 1

Note: The final filter type is based on the filter option selected before checkout.

Video

2.25 Gallon Water Filter System Installation Video

Watch this step-by-step guide to set up your Purewell 2.25 gallon water filter system and install the filter elements in the correct position before first use.

Installation Guide

2.25 Gallon System Setup & Filter Placement

This video shows how to assemble the Purewell 2.25 gallon water filter system, including how to arrange and install the filter elements properly for daily filtration.

Recommended before first use Helps confirm correct filter placement Covers basic system setup and assembly Useful when installing or replacing filter elements

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BO Series Countertop Gravity Water Filter System 2.25 Gallon

1. 30-Day Return Window

2. Return Eligibility

3. Drinking Water Hygiene Policy

4. Non-Returnable Items

5. Replacement Filters and Consumable Products

6. Gravity Water Filter Systems

7. Countertop Reverse Osmosis Systems

8. Outdoor Water Purifiers

9. Damaged, Defective or Incorrect Items

10. Missing Items

11. Return Shipping Costs

12. How to Start a Return or Exchange

13. Return Address

14. Tracking Number Requirement

15. Inspection and Refund Approval

16. Refund Processing

17. Exchanges

18. Promotions, Bundles and Gifts

19. International Orders, Customs and VAT

20. EU and UK Consumer Rights

21. Warranty Claims vs Returns

22. Water Quality and Performance Expectations

23. Policy Updates

24. Contact Us

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Durable, Coating-Free Construction for Everyday Water Contact

Why 304 Stainless Steel Is Used

✓ What the Material Supports

i What the Material Does Not Mean

Important Use and Care Notes

More Than a Product Claim: Evidence You Can Check

NSF/ANSI 42

What Does It Mean in Everyday Language?

NSF/ANSI/CAN 372

What Does It Mean in Everyday Language?

From a Marketing Claim to Verifiable Evidence

Documentation Available from Purewell

Important Certification Notes

Review the Documents Before You Choose

Fine Physical Filtration with a Hollow Fiber UF Membrane

How the Membrane Works

✓ Designed to Help Reduce

i Understand the Filtration Limit

Important Use and Care Notes

Built-In Protection for the Filter Media

How Silver Ion Support Works

✓ Designed to Support

i Not Intended to Replace

Important Use and Care Notes

Porous Carbon Designed to Improve Water Taste and Odor

How Activated Carbon Works

✓ Designed to Help Reduce

i Understand the Filtration Limit

Important Use and Care Notes

System Overview

Choose Your BO Series Core Filters

Filter Selection Required

6-Stage Multifunctional Filter

9-Stage Multifunctional Fluoride Reduce

Key Filter Indicators

Filter Use Notes

How to Set Up Your Countertop Gravity Water Filter System

Prepare and Clean the Parts

Assemble the Lid Knob

Install the Basic Spigot

Install the Core Filters

Stack the Chambers and Stand

Flush Before First Use

How the Filter System Works

Filter Replacement Guide

System Package

Basic Spigot Parts

Selected Filter Package

2.25 Gallon Water Filter System Installation Video

2.25 Gallon System Setup & Filter Placement

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NSF Certified for Your Health

Customer Reviews

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