One Gallon Gravity Water Filtration System

Filter water for a group in as little as 7 minutes with a Sawyer Gravity System. Highly portable, these systems are ideal for scouts, small groups, and aid during emergencies. Just allow gravity to do the work.

Full Product Description

A lightweight, robust solution for filtering large quantities of water, Sawyer's Gravity System with Dual-Threaded MINI filter is ideal for backpacking, backcountry camping, and emergency preparedness.

Available in two models, the 1-Gallon Gravity System (SP160) comes with one bag and a MINI, while the 1-Gallon Dual Bladder Gravity System (SP2160) comes with two bags (one for dirty water, one for clean) and a MINI.

The Sawyer dual-threaded MINI water filter weighs just 2 ounces, fits in the palm of your hand, and is rated to 0.1 micron absolute filtration — removing 99.99999% of all bacteria, such as salmonella, cholera, and E.coli, and removing 99.9999% of all protozoa (such as giardia and cryptosporidium). The MINI also filters out 100% of microplastics.

With threads on both sides, you can screw the push pull cap onto the MINI for easy on/off functionality while filtering. Convenient and easily packable, this single- and dual-bag gravity system doesn’t require any pumping and is perfect for camping, hunting, fishing, scouting, disaster relief, and emergency preparedness kits, as well as on adventure travel excursions where potable tap and bottled water are not easily carried or safe to drink.

The 1-gallon bladders feature a wide mouth cap that allows for fast and easy filling, as well as a convenient carry handle. To set up a gravity system, first fill the reservoir with water from any source (a lake, stream, pond, glacier, kitchen faucet, etc.). Hang the bag — from a tree, the back of your pack, or hold it up with your hand — and connect the MINI to the included hose and let gravity do its work. Water will flow through the MINI to produce fresh, clean water for drinking and cooking.

The SP160 package includes a dual-threaded MINI water filter, 1-gallon bladder, cleaning plunger, and gravity hose with adapters. It also comes with Sawyer's Cleaning Coupling accessory. The SP2160 package includes a dual-threaded MINI water filter, dirty water bladder, clean water bladder, tube adapter with shutoff clamp, inline adapters, tube adapter, long tube, hanging strap with S-biner, cleaning plunger, cleaning coupling, push-pull cap, and hose guide. The SP2160 Dual Bladder Gravity System includes a second "Clean Water" 1-gallon reservoir to hold your filtered water.

STATS AND SPECS

Filter Material

0.1 Micron Absolute Hollow Fiber Membrane

Longevity

up to 100,000 Gallons

removes

Bacteria, Protozoa, Cysts, and Microplastics

protection from

sweat resistant

liquid volume

 oz

HEIGHT

12.6

 inches

width

7.25

 inches

length

2.75

 inches

filter Weight

1.5

 oz

This item is not sold publicly. Contact us for details.

Contact Sawyer
Find in Stores
Button Text

use cases

Versatile camping water filter system is great for travel, backcountry treks, emergency prepping, and disaster kits.

let gravity do the work

Easily create gravity-based water filtering system with 0.1 micron absolute dual-threaded Sawyer MINI water filter and 1-gallon reservoir.

high performance

High-performance 0.1 Micron absolute inline filter fits in the palm of your hand and weighs just 2 ounces; 100% of MINI units individually tested three times to performance standards by Sawyer.

compatibility

Dual-threaded MINI allows you to use the flip top sports cap on the filter for easy on/off functionality; lightweight wide-mouth bladder for fast, easy filling; convenient carry handle.

kit includes

Includes MINI Water Filter, 1-gallon bladder, cleaning plunger, cleaning coupling, and gravity hose with adapters.

Frequently Asked Product Questions

Filter Compatibility

The Sawyer Squeeze FilterThe Sawyer Squeeze Filter can be used in conjunction with a hydration pack. Please see video Sawyer Squeeze with Hydration Pack using Inline Adapter and Sawyer Squeeze with Fast Fill Adapters.The Sawyer Squeeze Filter with Water BottlesThe Sawyer Squeeze Filter can also be used on water bottles when you are unsure whether or not it is safe to drink the water.The Sawyer Inline FilterThis convenient filter can be used as an inline filter on a hydration pack, a pre-filter for an existing pump system, with the provided faucet adapter, or with a gravity bag.

How long does the filter/purifier last?

Since the filters and purifiers can continuously be backwashed and re-used they have an extremely long life. The filter/purifier membrane may never need to be replaced, however when the flow rate slows or the filter clogs, simply backwash the unit with the provided backwashing device to clear out the pores.

What do you mean by 0.1 and .02 micron absolute?

Many other filters list nominal or average pore sizes which leave the possibility of harmful pathogens to pass through. By claiming absolute microns there are no variances in pore size on our filter membranes. At 0.1 and 0.02 micron absolute these are true barrier filters so there is no questionable time period whether the water is safe to drink.

How do I care for my filter during freezing weather?

Before initial wettingFilter is safe from freezing temperatures if it has never been wetted.After initial wettingWhile there is no definitive way to tell if a filter has been damaged due to freezing, Sawyer recommends replacing your filter if you suspect that it has been frozen.During tripsIf you are in freezing temperatures, we recommend that you store your filter in your pocket or close to your person so that your body heat can prevent freezing. THERE IS NO WARRANTY FOR A FROZEN FILTER.

How often do you have to clean or backwash the filter?

The frequency of cleaning depends on how dirty the water is. With relatively clear water, backwashing may only be necessary every 1,000 gallons whereas with extremely turbid or muddy water, backwashing may be required every 10 gallons. Nevertheless, backwashing is an extremely simple process and takes only a minute.

Do I need the pointONE Filter™ or the PointZERO TWO Purifier™?

To play it safe you can always take the pointZERO TWO purifier, but people in their natural environments typically only need bacterial protection because they build up immunity overtime to the viruses they have been exposed to.

Product Resources

No items found.

Our trusted retailers

S3 Select Water Purifier

S3 Select Water Purifier

The Select S3 is a dual stage purifier, able to treat the gnarliest water sources. Inside the silicone bottle is a foam purifier that uses adsorption to remove chemicals, pesticides, heavy metals, and viruses. The Micro Squeeze Filter on top removes the standard pathogens along with any other sediment, particulate, and microplastics.

View Item
S1 Select Water Filter

S1 Select Water Filter

The Select S1 is a dual stage filter. Inside the silicone bottle is a foam filter that uses adsorption to remove chemicals and pesticides. The Micro Squeeze Filter on top removes the standard pathogens along with any other sediment, particulate, and microplastics.

View Item
International Bucket System

International Bucket System

These systems are saving lives all over the world by combining our water filters with the tubing and accessories needed to convert a 5 gallon bucket into a low cost and long lasting gravity water filtration system.

View Item
Personal Water Filtration Bottle

Personal Water Filtration Bottle

To those who prefer self-contained water filtration systems, this is the system for you. Simply scoop water and continue the adventure.

View Item
Dual Threaded MINI Water Filtration System

Dual Threaded MINI Water Filtration System

The second generation of our MINI filter, the The Dual Threaded MINI, offers 28 mm threading on both sides of the filter and boasts multiple uses, including inline filtration.

View Item
Micro Squeeze Water Filtration System

Micro Squeeze Water Filtration System

Orginally designed for our Select Series, the Micro Squeeze filter is now available on its own for those who want our 0.1 absolute micron filtration, but in a slightly smaller form factor.

View Item
MINI Water Filtration System

MINI Water Filtration System

Our #1 selling model, the MINI filter is a great choice for outdoor enthusiasts and emergency preparedness. These systems are affordable, highly versatile, and come ready to go on your next adventure.

View Item
Squeeze Water Filtration System

Squeeze Water Filtration System

The Squeeze Filter is our workhorse model and is the filter of choice for heavy users and those who need long term reliability. The Squeeze Filters come with a Lifetime Warranty.

View Item
Tap Water Filtration System

Tap Water Filtration System

Great to use when traveling, during boil alerts, or in emergencies when safe drinking water is compromised, the Tap Filter is easy-to-use and filters to up to 500 gallons of clean drinking water per day.

View Item

Bigger than the trails

Since what we make is life-saving, we believe we have a moral obligation to help as many people as we can. 140 charity partners help us distribute our water filters, offering what each of us needs to stay alive, clean water, to people all over the world. It’s the soul of our company. A cause we dedicate ourselves to each day.

Learn more
Three children use a Sawyer filter as part of an international project.
Liberia
Liberia

Find in Stores

Button Text

products with purpose

The protection we make saves people’s lives. Literally. No wonder we’re fanatics about testing and dedicated to creating products no one else can match.

Sawyer Standard
A woman applies sunscreen to her daughter, who is drinking out of a Sawyer water filter.
Instagram image showing a mom hiking with her baby strapped to her.
Click and drag