How often do the filters need replacing?

The two included Foundation Filters last up to about 12 months. Upgrading to four filters extends that to roughly 24 months.

Does it remove fluoride?

Not with the standard Foundation Filters. BOROUX sells optional fluoride filters in 2- or 4-packs for that.

How fast does it filter water?

About 1 gallon per hour, so a full 3-gallon batch takes roughly three hours.

Lid, upper and lower stainless chambers, base ring, two hole plugs and two Foundation Filters. Four filters come with the max configuration.

How big is it on the counter?

It stands 23 inches tall and 9 inches in diameter. The chambers nest to about 15 inches for storage.

Is $399 a good price?

It is the best new price across the two stores listing it as of November 6, 2026, so there is no cheaper new option tracked right now.

Where is the BOROUX 3-Gallon Water Filter System cheapest?

At Amazon, for $399.00, as of our latest check.

What do buyers say about the BOROUX 3-Gallon Water Filter System?

Rated 4.8 out of 5 from 452 ratings. Buyers like: Great-tasting, clean water with no weird aftertaste; Easy to set up and use; High-quality stainless steel build and design. Common complaints: Some needed to look up assembly instructions on YouTube; One reviewer bought a stand separately.

Where can I buy the BOROUX 3-Gallon Water Filter System?

2 stores we checked sell it, including Boroux, Amazon.

BOROUX 3-Gallon Water Filter System Price History: Lowest $399.00

What reviewers say

4.8 / 5452 ratings

Rated 4.8 out of 5 from 452 ratings, owners mostly praise the taste of the water, the stainless build and easy setup. Complaints are minor: unclear assembly instructions and the missing stand.

What people mention

Water tastePraisedOwners say the filtered water tastes clean with no weird aftertaste.
Build qualityPraisedBuyers describe the stainless chambers and spigot as high quality and durable.
SetupMixedMost find it easy to set up, but some needed YouTube to follow the assembly.
Flow rateCriticisedGravity flow of about 1 gallon per hour means refills take time.
Filter primingPraisedThe Automatic Filter Primer is called easy and better than faucet priming.
StandCriticisedNo stand is included, and at least one reviewer bought one separately.

From BOROUX

Gravity-fed countertop water filter system with 3-gallon capacity
Includes two BOROUX Foundation Filters (up to 12 months of filtration)
WQA-certified to NSF/ANSI 42, NSF/ANSI/CAN 401 and NSF/ANSI/CAN 372
Removes up to 99.97% of harmful contaminants like lead, PFAS and chlorine
Includes the Automatic Filter Primer, which primes filters in 90 seconds
Lifetime warranty on stainless steel chambers

Materials: High-grade 304 AISI stainless steel chambers and spigot; Stem Saver and hole plugs are BPA-free food-grade plastic; base ring and washers are food-grade silicon
Sizing: 2-filter configuration suits up to 4 people filled once daily; 4-filter configuration filters twice as fast and suits up to 8 users or above-average use. Assemb
Care: Clean upper and lower chambers monthly with warm water and dish soap; remove Foundation Filters before cleaning. Scrub and re-prime filters every 3–6 months or
Guarantee: Lifetime warranty on the Legacy System (chambers, spigots, washers, hole plugs, wingnuts) against defects; Foundation Filters warranted for one year; no registr
Returns: 60-Day Satisfaction Guarantee: returns of most products accepted in new or used condition within 60 days of receipt if not satisfied.
Shipping: Free U.S. shipping on orders over the stated threshold.
Packs: 2-filter and 4-filter configurations; fluoride filter set, spigots, stands, pitchers, bottles, cups and maintenance kit offered as add-ons.
In the box: Lid, Upper chamber, Lower chamber, Base ring, 2 hole plugs, 2 BOROUX Foundation Filters (4 with max selection)

About the BOROUX 3-Gallon Water Filter System

The BOROUX 3-Gallon System isn't just an upgrade; it's a transformation. Experience the relief of truly pristine water and quality that lasts a lifetime. For 20 years, we've perfected water filtration. The BOROUX 3-Gallon gravity water filter system delivers exceptional quality, unmatched longevity, and incredible value. It includes two rigorously tested BOROUX Foundation Filters (12 months). Upgrade to four filters for an even longer lifespan (24 months)! The superior stainless steel design ensures lasting beauty for this elegant countertop water filter.

HSA/FSA Eligible at Checkout.