BUCKHORN CLIFFS

Water · Guide

Boroux Legacy gravity water filter: why I switched

My review of the Boroux Legacy, the stainless gravity-fed water filter I now use every day and keep for emergencies, with a point by point comparison to the Royal Berkey.

Quick facts

Capacity
3 gallons
Filter life
Up to 12,000 gallons per pair
Power
None, gravity fed
Build
Seamless 304 stainless steel, stainless spigot with ceramic valve
Warranty
Lifetime on the steel chambers
Trial
60 days, risk free

The Boroux Legacy is the gravity filter I use every day and the one I count on for long-term preparedness. It is stainless steel from top to spigot, it needs no power or plumbing, and one pair of filters cleans up to 12,000 gallons. I still own two Berkeys and like them, but the Boroux is the better built system.

See the Boroux Legacy60-day risk-free trial, lifetime warranty on the chambers

Why I moved on from Berkey

Families, preppers, and off-grid homeowners trusted Berkey for decades. In December 2022 Berkey had to stop selling its most popular filters. It was not a safety problem, the filters still worked, but it left a lot of people without a source for replacements.

The team behind Boroux took what worked in the Berkey and redesigned it. The result is the Boroux Legacy: a gravity-fed, stainless steel system built for daily drinking water and long emergencies.

  • Third-party tested filtration performance
  • Lifetime warranty on the stainless steel chambers
  • Eco-conscious materials and packaging
  • Filters rated for up to 24 months of water

What I like about it

Built to lastSeamless 304 stainless steel. No welds to rust, no plastic chambers, and a stainless spigot with a ceramic valve. It feels solid.
Long filter lifeEach pair of Foundation filters cleans up to 12,000 gallons, so replacements are a long way off.
No power neededPour water in the top and gravity does the rest. It works in a power outage, at a remote cabin, or in an off-grid home with no plumbing or electricity.
Sized for a family3 gallons of storage, easy daily use, and a backup way to filter water when the grid goes down.

What the filters remove

The Foundation filters use activated carbon and silver. They remove:

  • Chlorine
  • Microplastics
  • Lead and heavy metals
  • VOCs and organic chemicals
  • Bad taste and odor

My own view, not the maker's claim: these filters are capable of removing bacteria, protozoa, and even some viruses, which makes untreated water from rivers, lakes, or rain collection much safer to drink in a survival setting.

Boroux Legacy vs Royal Berkey

Small details make a big difference in a gravity filter. I own both, and the Boroux comes out on top.

FeatureBoroux LegacyRoyal Berkey
Filter protectionStem Saver design prevents filter breakageNo protective support
SpigotStainless steel with ceramic valveBasic plastic
ChambersSeamless one-piece stainless steelWelded or multi-piece
AirflowVented chambers prevent airlocksNo venting, more prone to flow problems
WarrantyLifetime on the steel chambersNo lifetime warranty
TestingThird-party tested to the full claimed gallonageOlder testing, extrapolated from 500 ml samples
Trial60 days, risk freeNo comparable trial

How it works

  1. 1FillPour tap water into the upper chamber.
  2. 2FilterWater flows down through the carbon and silver filters.
  3. 3CollectContaminants stay behind as clean water drips into the lower chamber.
  4. 4PourDraw clean, good tasting water from the spigot.

Bottom line

Clean water is the first priority in any emergency. I keep two of these at home, and more at my cafe, because one is none and two is one. The Boroux Legacy works on an ordinary day and keeps working when things go sideways.

Order the Boroux Legacy3 gallons, up to 12,000 gallons per pair of filters

Questions this answers

Tap a question for the short answer.

What is the best gravity water filter for preparedness

My pick is the Boroux Legacy. It is a gravity-fed system made from seamless 304 stainless steel, holds 3 gallons, needs no power or plumbing, and each pair of filters cleans up to 12,000 gallons. I use it daily and keep a second one as a backup.

Is boroux better than berkey

I own both and rank the Boroux higher. It has a Stem Saver to prevent filter breakage, a stainless spigot with a ceramic valve instead of plastic, seamless one-piece chambers, vents that prevent airlocks, a lifetime chamber warranty, and a 60-day trial.

How many gallons do boroux filters last

Each pair of Boroux Foundation filters can clean up to 12,000 gallons, and Boroux rates them for up to 24 months of water. The filters are third-party tested to the full claimed gallonage.

Does a gravity water filter need electricity

No. You pour water into the top chamber, gravity pulls it through the filters, and clean water collects in the lower chamber. It needs no plumbing or electricity, so it works during outages, at remote cabins, and in off-grid homes.

What do boroux foundation filters remove

The Foundation filters use activated carbon and silver. They remove chlorine, microplastics, lead and heavy metals, VOCs and organic chemicals, and bad taste and odor. In my view they are also capable of removing bacteria, protozoa, and some viruses from untreated water.

How much water does the boroux legacy hold

The Boroux Legacy has a 3-gallon storage capacity. That is enough for easy daily use by a family, and it gives you a backup way to filter water when the grid goes down.

Keep going

Read nextHow to source, carry, and filter local fresh waterA system for hauling water from a local source with a frame pack and rigid containers, filtering and disinfecting it at home, and sanitizing the containers.Water · Skill

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Water · GuideLast reviewed 2026-09-20

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