TALK TO AN EXPERT: 1-844-945-3625

0

Your Cart is Empty

Imperial Berkey® Water Filter System, 4.5 Gal (2 Black Berkey® Elements)

Countertop gravity water filter for households of 4 to 8. Holds 4.5 gallons and takes up to 6 elements, no plumbing or electricity needed.

Choose your Imperial Berkey package

Choose a package to add the system and accessory to your cart in one click.

Free shipping, no sales taxShips in 1–5 business days
Lifetime warrantyExclusive to Wild Oak Trail
12-month low price guaranteeNever wait for a sale
Authorized Berkey® dealerGenuine Berkey® with full manufacturer support

Berkey® products cannot ship to California or Iowa.

Guaranteed safe checkout: Visa, Mastercard, American Express, Apple Pay, Google Pay, PayPal
Authorized Berkey Dealer
Authorized Berkey® DealerOfficial lifetime warranty
  • Comes standard with 2 Black Berkey® Elements. A pair filters roughly 6,000 gallons before replacement, so most households go years between element changes.
  • Built for tap water. Black Berkey® Elements are specially formulated to address 200+ typical contaminants found in tap water, including chlorine, lead and PFAS. Independent lab reports are linked in the description.
  • Sized for 4 – 8 people. 4.5 gallons of filtered water on hand, refilled from the tap in a minute.
  • Fits on the counter: 26" tall × 10" wide, brushed stainless steel.
  • Full setup included: stainless chambers, lid, spigot, priming button, blocking plugs and base gasket. No tools needed.
  • Exclusive lifetime warranty with Wild Oak Trail
Have Questions?
Chat, Call, or Text a Specialist
Found a better price? We will match or beat it! 1-844-945-3625
×

Connect With Us

We match or beat any competitor's price!
1-844-945-3625

📞 Call Now 💬 Text Us
Mon-Fri 10am-5pm CST
After hours? Text us and we'll reply ASAP!

🚛 Free Shipping to all 50 States including Hawaii and Alaska when ordering a Berkey System

Ships within 1-5 business days.

*This Berkey Product cannot ship to California or Iowa.

Authorized Berkey Dealer Authorized Berkey® Dealer Official Lifetime Warranty

Imperial Berkey® Countertop Water Filter System (4.5 Gallons)

Includes 2 Black Berkey® Elements (Expandable to 6)

STAINLESS STEEL GRAVITY-FED SYSTEM

NO ELECTRICITY NEEDED

The Imperial Berkey® System by Berkey Water Filters is the step up from the Royal for larger households. Sized for 4 to 8 people, it holds 4.5 gallons of filtered tap water and accepts up to 6 Black Berkey® Elements when you need faster flow.

Imperial Berkey System
Trophy Trusted for 25+ Years Water Droplet 6,000 Gallons Per Pair Toxic Symbol 200+ Tap-Water Contaminants Addressed Handshake Lifetime System Warranty

Key Features & Benefits

Built for Tap Water
Black Berkey® Elements are specially formulated to address 200+ typical contaminants found in municipal tap water, including chlorine, lead, and PFAS.
Expandable Flow
Ships with 2 Black Berkey® Elements and accepts up to 6. Each added pair raises the flow rate, up to about 16.5 gallons per hour.
No Plumbing, No Power
Gravity does the work. Set it on the counter, fill the top chamber, and pour from the spigot. Nothing to install and nothing to plug in.

Tested Reduction of Common Tap-Water Contaminants


PFAS / PFOA
Exceeds 99.9% Reduction
Reduces "forever chemicals" such as PFOA, PFOS, and PFBS.

Pharmaceuticals
Over 99.9% Reduction
Reduces trace antibiotics, hormones, and drug residues commonly found in tap water.

Herbicides & Pesticides
99.9% Reduction
Reduces glyphosate, atrazine, and other agricultural chemical runoff.

Volatile Organics (VOCs)
Exceeds 99.9% Reduction
Reduces benzene, chloroform, and carbon tetrachloride.

Radiological Elements
Up to 99.8% Reduction
Independent lab testing shows reduction of uranium and other radiological elements that can occur in tap water.

Petroleum Byproducts
99.9% Reduction
Reduces gasoline, diesel, and crude-oil related compounds that can reach municipal supplies.

Heavy Metals
Over 99.9% Reduction
Reduces lead, mercury, and aluminum.

Taste & Odor
Reduced Taste & Odor
Reduces chlorine taste and odor while filtering out silt and sediment.

*Results from independent, state-certified laboratory testing of Black Berkey® Elements on treated municipal tap water. See the full test reports. Berkey® systems are intended for use with treated tap water.

Have Questions? Chat, Call, or Text a Specialist Found a better price? We will match or beat it! 1-844-945-3625

Imperial Berkey Specifications

Specification Details
Storage Capacity 4.5 Gallons (17 Liters)
Height (In Use) 26 inches
Diameter 10 inches
Weight (Empty) 10 lbs
Max Flow Rate Up to 5.5 Gallons/hour (2 elements) or 16.5 Gallons/hour (6 elements)
Ideal For 4 - 8 People

Berkey Multi-Use Stainless Steel Systems

Authorized Berkey Dealer

Specifications:

Capacity Height Fully Assembled Height Upper Chamber Weight Empty Diameter Maximum Filters Ideal For
Travel Berkey

Travel Berkey

Capacity:1.5 Gallons Height:18 Inches Upper Chamber:12 Inches Weight:6.13 Pounds Diameter:7.5 Inches Max Filters:Two Filters Ideal For:1 - 3 People
Big Berkey

Big Berkey

Capacity:2.25 Gallons Height:19.25 Inches Upper Chamber:13 Inches Weight:7 Pounds Diameter:8.5 Inches Max Filters:Four Filters Ideal For:1 - 4 People
Royal Berkey

Royal Berkey

Capacity:3.25 Gallons Height:23 Inches Upper Chamber:15.25 Inches Weight:8 Pounds Diameter:9.5 Inches Max Filters:Four Filters Ideal For:2 - 6 People
Imperial Berkey

Imperial Berkey

Capacity:4.5 Gallons Height:26 Inches Upper Chamber:17 Inches Weight:10 Pounds Diameter:10 Inches Max Filters:Six Filters Ideal For:4 - 8 People
Crown Berkey

Crown Berkey

Capacity:6 Gallons Height:30 Inches Upper Chamber:20 Inches Weight:12 Pounds Diameter:11 Inches Max Filters:Eight Filters Ideal For:6 - 12 People

How to Clean Your Berkey Filter

 

Simple Assembly Guide

  1. Unpack & Prime: Take out all parts; use the included priming instructions to activate the Black Berkey pores.
  2. Preparation: Clean your hands before starting to avoid component contamination.
  3. Lid Assembly: Pass the screw up through the lid and attach the knob firmly by hand.
  4. Filter Installation: Fit the large sealing washer on the element stem. Slide it through the upper chamber base and lock it with a wing nut until snug.
  5. Spigot Setup: Place a washer on the spigot stem and insert through the lower tank. Secure with the interior washer and nut by hand.
  6. Final Step: Stack the upper tank on the lower unit and set the lid. The system is ready for its first fill.

Note: If installing PF-2 fluoride filters, they must be primed separately and attached directly to the Black Berkey stems inside the lower chamber.

Berkey Assembly Diagram

Troubleshooting & Tips

Residual Water

It is normal for about one inch of water to stay in the top tank, as there isn't enough gravity pressure left to push it through.

Filtration Speed

Flow is fastest when the top tank is full. If speed is extremely slow, re-priming elements can clear air and open pores.

Taste & Texture

If flavors are off after initial flushes, try a food coloring test. PF-2 users should ensure all manufacturing dust is flushed to prevent cloudiness.

Spigot Leaks

Check that washers are on both sides of the tank wall. Dry or hard washers can be revived by soaking in olive oil for an hour.

Frequently Asked Questions

What is the Imperial Berkey System?

The Imperial Berkey System is a stainless steel countertop water filter that uses gravity, not plumbing or electricity, to pass tap water through Black Berkey® Elements. It is sized for larger households of 4 to 8 people, and everything you need to set it up is in the box.

How much water can the Imperial Berkey System hold?

The Imperial Berkey System has a holding capacity of 4.5 gallons (17 liters), making it a good fit for 4 to 8 people. Fill it in the evening and the lower chamber holds enough filtered water for cooking and drinking the next day.

How long does it take to filter water with the Imperial Berkey?

The Imperial Berkey System can filter approximately 5.5 gallons per hour with two elements, and up to 16.5 gallons per hour when fully configured with six Black Berkey® Elements. Filtration time can vary depending on the quality of the source water.

What does the Imperial Berkey reduce in tap water?

Black Berkey® Elements are specially formulated to address 200+ typical contaminants found in treated tap water, including chlorine, lead and other heavy metals, PFAS, pesticides, pharmaceutical residues, and VOCs. Add the optional PF-2 elements to also reduce fluoride and arsenic. Independent lab reports are linked above. Berkey® systems are intended for use with treated municipal tap water.

How do I clean the Imperial Berkey System?

To clean the Imperial Berkey System, disassemble the unit and scrub the Black Berkey elements with a Scotch-Brite pad under running water. Wash the chambers with mild dish soap and rinse thoroughly. Cleaning is recommended every six months or as needed, depending on water quality and usage.

How often do I need to replace my Berkey filters?

The Black Berkey® Elements can filter up to 3,000 gallons (11,356 liters) of water per element, meaning the two elements in the Imperial Berkey can filter up to 6,000 gallons (22,712 liters) before needing replacement. With average use, this could mean several years before replacement is necessary.

Are Berkey Products able to ship to the state of IA or CA?

No. Berkey® products cannot ship to California or Iowa. If you are in either state, call or chat with us and we will point you to a comparable gravity filter we can ship.

×

Connect With Us

We match or beat any competitor's price!

1-844-945-3625 📞 Call Now ✉️ Text Us Mon-Fri: 10am-5pm CST
After hours? Chat with Oaky, our 24-hour AI concierge!

Berkey Water Filter Size Comparison Chart

Travel Berkey Water Filter Big Berkey Water Filter Royal Berkey Water Filter
Model Travel Berkey Big Berkey Royal Berkey
Capacity 1.5 Gallons 2.25 Gallons 3.25 Gallons
Height (Fully Assembeled) 18 Inches 19.25 inches 23 inches
Upper Chamber Height 12 Inches 13 Inches 15.25 Inches
Weight when Empty 6.13 Pounds 7 Pounds 8 Pounds
Diameter 7.5 Inches 8.15 Inches 9.5 Inches
Maximum Filters 2 Filters 4 Filters 4 Filters
Ideal For 1-3 People 1-4 People 2-4 People

Best Price Guarantee

You'll get the best price available at Wild Oak Trail! We'll match anyone who has it lower! 

We love to chat! Give us a call and we'll see what we can do to get you the best deal!

Conditions of our 100% Price Match Guarantee:

  • Contact us to discuss the Price Match so we can look up the competitors price

  • Buy one, get one free offers and Rebates are not eligible

  • The item must be in stock on the competitors website

  • The competitor must be an online store, not a retail location

  • The website can't be a discounter or auction website ( such as eBay, overstock, etc.)

  • The company must be an Authorized Retailer of the product in question

  • The Price Match Guarantee is based on the final price of the product including shipping and taxes

Why Buy From Wild Oak Trail? 

We’re a family-run business. My Wife Hailey and I run this business with our small staff of 3 awesome people. When you shop with Wild Oak Trail, you're supporting real people, not a big corporation.

We truly care. We’re here before, during, and after your purchase. Good products and great service—that’s how we earn your trust. We see and celebrate EVERY sale that comes in!

We choose quality. If we wouldn’t use it ourselves, we won’t offer it. Our goal is to make you happy enough to tell your friends.

Thanks for supporting our family and being part of the Wild Oak Trail community!

Description
🚛 Free Shipping to all 50 States including Hawaii and Alaska when ordering a Berkey System

Ships within 1-5 business days.

*This Berkey Product cannot ship to California or Iowa.

Authorized Berkey Dealer Authorized Berkey® Dealer Official Lifetime Warranty

Imperial Berkey® Countertop Water Filter System (4.5 Gallons)

Includes 2 Black Berkey® Elements (Expandable to 6)

STAINLESS STEEL GRAVITY-FED SYSTEM

NO ELECTRICITY NEEDED

The Imperial Berkey® System by Berkey Water Filters is the step up from the Royal for larger households. Sized for 4 to 8 people, it holds 4.5 gallons of filtered tap water and accepts up to 6 Black Berkey® Elements when you need faster flow.

Imperial Berkey System
Trophy Trusted for 25+ Years Water Droplet 6,000 Gallons Per Pair Toxic Symbol 200+ Tap-Water Contaminants Addressed Handshake Lifetime System Warranty

Key Features & Benefits

Built for Tap Water
Black Berkey® Elements are specially formulated to address 200+ typical contaminants found in municipal tap water, including chlorine, lead, and PFAS.
Expandable Flow
Ships with 2 Black Berkey® Elements and accepts up to 6. Each added pair raises the flow rate, up to about 16.5 gallons per hour.
No Plumbing, No Power
Gravity does the work. Set it on the counter, fill the top chamber, and pour from the spigot. Nothing to install and nothing to plug in.

Tested Reduction of Common Tap-Water Contaminants


PFAS / PFOA
Exceeds 99.9% Reduction
Reduces "forever chemicals" such as PFOA, PFOS, and PFBS.

Pharmaceuticals
Over 99.9% Reduction
Reduces trace antibiotics, hormones, and drug residues commonly found in tap water.

Herbicides & Pesticides
99.9% Reduction
Reduces glyphosate, atrazine, and other agricultural chemical runoff.

Volatile Organics (VOCs)
Exceeds 99.9% Reduction
Reduces benzene, chloroform, and carbon tetrachloride.

Radiological Elements
Up to 99.8% Reduction
Independent lab testing shows reduction of uranium and other radiological elements that can occur in tap water.

Petroleum Byproducts
99.9% Reduction
Reduces gasoline, diesel, and crude-oil related compounds that can reach municipal supplies.

Heavy Metals
Over 99.9% Reduction
Reduces lead, mercury, and aluminum.

Taste & Odor
Reduced Taste & Odor
Reduces chlorine taste and odor while filtering out silt and sediment.

*Results from independent, state-certified laboratory testing of Black Berkey® Elements on treated municipal tap water. See the full test reports. Berkey® systems are intended for use with treated tap water.

Have Questions? Chat, Call, or Text a Specialist Found a better price? We will match or beat it! 1-844-945-3625

Imperial Berkey Specifications

Specification Details
Storage Capacity 4.5 Gallons (17 Liters)
Height (In Use) 26 inches
Diameter 10 inches
Weight (Empty) 10 lbs
Max Flow Rate Up to 5.5 Gallons/hour (2 elements) or 16.5 Gallons/hour (6 elements)
Ideal For 4 - 8 People

Berkey Multi-Use Stainless Steel Systems

Authorized Berkey Dealer

Specifications:

Capacity Height Fully Assembled Height Upper Chamber Weight Empty Diameter Maximum Filters Ideal For
Travel Berkey

Travel Berkey

Capacity: 1.5 Gallons Height: 18 Inches Upper Chamber: 12 Inches Weight: 6.13 Pounds Diameter: 7.5 Inches Max Filters: Two Filters Ideal For: 1 - 3 People
Big Berkey

Big Berkey

Capacity: 2.25 Gallons Height: 19.25 Inches Upper Chamber: 13 Inches Weight: 7 Pounds Diameter: 8.5 Inches Max Filters: Four Filters Ideal For: 1 - 4 People
Royal Berkey

Royal Berkey

Capacity: 3.25 Gallons Height: 23 Inches Upper Chamber: 15.25 Inches Weight: 8 Pounds Diameter: 9.5 Inches Max Filters: Four Filters Ideal For: 2 - 6 People
Imperial Berkey

Imperial Berkey

Capacity: 4.5 Gallons Height: 26 Inches Upper Chamber: 17 Inches Weight: 10 Pounds Diameter: 10 Inches Max Filters: Six Filters Ideal For: 4 - 8 People
Crown Berkey

Crown Berkey

Capacity: 6 Gallons Height: 30 Inches Upper Chamber: 20 Inches Weight: 12 Pounds Diameter: 11 Inches Max Filters: Eight Filters Ideal For: 6 - 12 People

How to Clean Your Berkey Filter

 

Simple Assembly Guide

  1. Unpack & Prime: Take out all parts; use the included priming instructions to activate the Black Berkey pores.
  2. Preparation: Clean your hands before starting to avoid component contamination.
  3. Lid Assembly: Pass the screw up through the lid and attach the knob firmly by hand.
  4. Filter Installation: Fit the large sealing washer on the element stem. Slide it through the upper chamber base and lock it with a wing nut until snug.
  5. Spigot Setup: Place a washer on the spigot stem and insert through the lower tank. Secure with the interior washer and nut by hand.
  6. Final Step: Stack the upper tank on the lower unit and set the lid. The system is ready for its first fill.

Note: If installing PF-2 fluoride filters, they must be primed separately and attached directly to the Black Berkey stems inside the lower chamber.

Berkey Assembly Diagram

Troubleshooting & Tips

Residual Water

It is normal for about one inch of water to stay in the top tank, as there isn't enough gravity pressure left to push it through.

Filtration Speed

Flow is fastest when the top tank is full. If speed is extremely slow, re-priming elements can clear air and open pores.

Taste & Texture

If flavors are off after initial flushes, try a food coloring test. PF-2 users should ensure all manufacturing dust is flushed to prevent cloudiness.

Spigot Leaks

Check that washers are on both sides of the tank wall. Dry or hard washers can be revived by soaking in olive oil for an hour.

Frequently Asked Questions

What is the Imperial Berkey System?

The Imperial Berkey System is a stainless steel countertop water filter that uses gravity, not plumbing or electricity, to pass tap water through Black Berkey® Elements. It is sized for larger households of 4 to 8 people, and everything you need to set it up is in the box.

How much water can the Imperial Berkey System hold?

The Imperial Berkey System has a holding capacity of 4.5 gallons (17 liters), making it a good fit for 4 to 8 people. Fill it in the evening and the lower chamber holds enough filtered water for cooking and drinking the next day.

How long does it take to filter water with the Imperial Berkey?

The Imperial Berkey System can filter approximately 5.5 gallons per hour with two elements, and up to 16.5 gallons per hour when fully configured with six Black Berkey® Elements. Filtration time can vary depending on the quality of the source water.

What does the Imperial Berkey reduce in tap water?

Black Berkey® Elements are specially formulated to address 200+ typical contaminants found in treated tap water, including chlorine, lead and other heavy metals, PFAS, pesticides, pharmaceutical residues, and VOCs. Add the optional PF-2 elements to also reduce fluoride and arsenic. Independent lab reports are linked above. Berkey® systems are intended for use with treated municipal tap water.

How do I clean the Imperial Berkey System?

To clean the Imperial Berkey System, disassemble the unit and scrub the Black Berkey elements with a Scotch-Brite pad under running water. Wash the chambers with mild dish soap and rinse thoroughly. Cleaning is recommended every six months or as needed, depending on water quality and usage.

How often do I need to replace my Berkey filters?

The Black Berkey® Elements can filter up to 3,000 gallons (11,356 liters) of water per element, meaning the two elements in the Imperial Berkey can filter up to 6,000 gallons (22,712 liters) before needing replacement. With average use, this could mean several years before replacement is necessary.

Are Berkey Products able to ship to the state of IA or CA?

No. Berkey® products cannot ship to California or Iowa. If you are in either state, call or chat with us and we will point you to a comparable gravity filter we can ship.

×

Connect With Us

We match or beat any competitor's price!

1-844-945-3625 📞 Call Now ✉️ Text Us Mon-Fri: 10am-5pm CST
After hours? Chat with Oaky, our 24-hour AI concierge!
Berkey Size Comparisons

Berkey Water Filter Size Comparison Chart

Travel Berkey Water Filter Big Berkey Water Filter Royal Berkey Water Filter
Model Travel Berkey Big Berkey Royal Berkey
Capacity 1.5 Gallons 2.25 Gallons 3.25 Gallons
Height (Fully Assembeled) 18 Inches 19.25 inches 23 inches
Upper Chamber Height 12 Inches 13 Inches 15.25 Inches
Weight when Empty 6.13 Pounds 7 Pounds 8 Pounds
Diameter 7.5 Inches 8.15 Inches 9.5 Inches
Maximum Filters 2 Filters 4 Filters 4 Filters
Ideal For 1-3 People 1-4 People 2-4 People
Best Price Guarantee!

Best Price Guarantee

You'll get the best price available at Wild Oak Trail! We'll match anyone who has it lower! 

We love to chat! Give us a call and we'll see what we can do to get you the best deal!

Conditions of our 100% Price Match Guarantee:

  • Contact us to discuss the Price Match so we can look up the competitors price

  • Buy one, get one free offers and Rebates are not eligible

  • The item must be in stock on the competitors website

  • The competitor must be an online store, not a retail location

  • The website can't be a discounter or auction website ( such as eBay, overstock, etc.)

  • The company must be an Authorized Retailer of the product in question

  • The Price Match Guarantee is based on the final price of the product including shipping and taxes

Why Buy From Us

Why Buy From Wild Oak Trail? 

We’re a family-run business. My Wife Hailey and I run this business with our small staff of 3 awesome people. When you shop with Wild Oak Trail, you're supporting real people, not a big corporation.

We truly care. We’re here before, during, and after your purchase. Good products and great service—that’s how we earn your trust. We see and celebrate EVERY sale that comes in!

We choose quality. If we wouldn’t use it ourselves, we won’t offer it. Our goal is to make you happy enough to tell your friends.

Thanks for supporting our family and being part of the Wild Oak Trail community!

Berkey Warranty

EXCLUSIVE to Wild Oak Trail: Berkey Water Filter Extended Lifetime Warranty

Wild Oak Trail offers an exclusive Lifetime warranty for your Big Berkey Water Filter. This provides coverage over and above the general manufacturer’s warranty, ensuring your investment is protected for years to come.

What is Covered?

  • Stainless steel chambers (Upper & Lower)
  • Stainless steel lid
  • Washers, nuts, and spigot

Warranty Timeline

Product Part Coverage Period Handled By
Chambers & Hardware First 6mo - 2yrs NMCL (Berkey)
Chambers & Hardware Lifetime Wild Oak Trail
Purification Elements 2-Year Pro-Rated NMCL (Berkey)

Filter Replacement Pro-Rating

Black Berkey and Ceramic elements are calculated in 6-month intervals. Example: If used for 8 months, 75% of the guarantee still applies (replacement set for 25% off).


Terms & Conditions: Proof of purchase from www.WildOakTrail.com is required. Warranty is void in cases of misuse, abuse, lack of maintenance, or accidents (dropping). Customer is responsible for processing and shipping charges.

Questions? Contact us via email, chat, or phone for assistance.

Berkey Shipping Details

All Berkey Water Filter systems and accessories are processed and shipped directly from our trusted U.S. warehouse partners within 3 to 7 business days. Once your order has been dispatched, you will receive a confirmation email containing your tracking number so you can monitor your delivery status in real time.

Due to the stainless steel construction and component packaging of Berkey systems, some larger models or bundle packages may arrive in multiple shipments (for example, the system body may ship separately from filter elements or add-on accessories). If this happens, tracking information will be provided for each package.

Wild Oak Trail proudly offers FREE standard shipping within the continental United States on qualifying Berkey orders. Please note that shipping timelines may vary slightly during peak seasons, holidays, or due to carrier delays beyond our control.

Shipping Restrictions: Due to current manufacturer policies, Berkey products cannot be shipped to Iowa or California. Orders placed with shipping addresses in these states will be canceled and refunded. If you have questions regarding eligibility, please contact our support team before placing your order.