Limited Time
Seawater To
Fresh Water
Meet QuenchSea 3.0
the world's only low-cost portable seawater desalination device
Turn seawater into fresh water instantly. Handheld, human-powered desalination for sailors, campers, travellers, emergency kits and humanitarian relief. No battery. No fuel. Just clean water.
The ultimate survival tool
Order Now
Worldwide shipping
6–8L/hr
Fresh water output
98%
Salt rejection
MROD
Manual Reverse Osmosis Desalinator
New launch
QuenchSea 3.0 is here
As featured in
YAHOO
CNN
WIRED
Gizmodo
New Atlas
euronews
Mashable
Travel + Leisure
QuenchSea in a nutshell
Survival-grade clean water, anywhere the sea is
6-8 litres per hour
1.6-2.1 US gallons of drinkable fresh water every hour — up to 192 litres a day in ideal conditions.
Triple filtration
Ultra- and microfiltration remove parasites, pathogens, suspended solids and microplastics.
Human powered
A simple hand lever builds 60 bar of pressure. No batteries, no electricity, no fuel required.
98% salt rejection
Output below 1,000 TDS, meeting WHO maximum contaminant levels for safe drinking water.
Ultra-compact & durable
Engineered to last with no extra parts to lose. Easy to operate, clean and store away.
Pictorial instructions
Anyone can operate it. Clear pictorial guidance makes QuenchSea ready for emergency use.
Read the instruction manual
The ideal emergency device
How QuenchSea works
Four engineered stages turn raw seawater into safe drinking water — powered entirely by your hand.
01
Hydraulic system
A unique hydraulic system builds pressure to 60 bar (6,000 kPa) to drive water through the membrane.
02
Triple filtration
A triple pre-filtration stage removes suspended solids, sediment, parasites and microplastics — protecting the membrane.
03
Reverse osmosis
An advanced industrial RO membrane demineralises seawater under 55–60 bar of pressure.
04
Human power
A lever is all the energy source you need — an energy recovery device reuses pressure to cut the effort. No outside power.
Our technology
Reverse osmosis, in the palm of your hand
QuenchSea uses a state-of-the-art industrial reverse osmosis membrane to remove salts, bacteria, parasites and microplastics. Seawater molecules are forced through a semipermeable membrane under high pressure, leaving contaminants behind — and clean, drinkable water flowing out.
- Removes 98% of dissolved salts
- Filters bacteria, parasites & microplastics
- Easily replaceable, affordable membranes
Seawater to fresh water
Get your QuenchSea
Best seller
QuenchSea 3.0 Desalination Device
The complete handheld kit — hydraulic pump, triple pre-filtration and reverse osmosis membrane. Everything you need to turn the sea into safe drinking water.
$400.00
RO Membrane — 2 pack
Advanced reverse osmosis membrane, seawater only. Capacity 8 L / 2 gal per hour. Includes 2 × QuenchSea RO Membranes (SW1708).
Compatible with QuenchSea 3.0 only.
$60.00
Pre-Filter — 2 pack
0.01-micron hollow-fiber ultrafiltration plus microfiltration removes suspended solids, pathogens, parasites and microplastics. An antibacterial activated-carbon fiber filter keeps the water's taste palatable and odour pleasant. Includes 2 × QuenchSea Pre-filters.
$40.00
TDS Pen Reader
Test your overall water purity in ppm before and after using QuenchSea — anything below 1,000 ppm is drinkable. Also measures seawater salinity levels.
$40.00
The detail
Technical specifications
Desalination capacity
6-8 L/hr (1.6-2.1 US gal)
Technology type
Reverse osmosis membrane
Weight
6 kg — 13 lbs
Seawater feedflow rate
20 litres per hour
Pressure
5.5 MPa
Pressure release valve
Set at 6.0 MPa release
Max feed water temp
45°C / 113°F
Output quality
Below 1,000 TDS
Salt rejection
98% (varies with salinity)
Pre-filtration
Triple ultrafiltration + carbon
Already creating ripples
Every device is a lifeline
100M
Devices by 2035
We pledge to donate and distribute to the people who need access to clean water most.
1:1
Buy one, we donate one
With each purchase we donate a product on your behalf, helping fight the water crisis.
TÜV
TÜV Nord certified
Independent inspection, certification and testing from a leading industry expert.
Join the pledge
100 million devices by 2035
Two thirds of the world's population live in water-scarce regions, and over seven million people die each year from water-related diseases.
Join our pledge to donate 100 million QuenchSea devices by 2035 — and bring clean water to over 1 billion people.
1B+
People impacted
7M
Lives lost yearly
Make a donation
Your donation helps supply clean water to those who need it most.
Scan the code or donate online in seconds.
Donate nowJoin the journey
Partner with us
Over 2.2 billion people worldwide have no access to clean water. Help us scale QuenchSea and make an impact where it matters most.
Humanitarian
The UN ranks the water crisis as the number one global risk by impact. Partner with us to bring clean water to the people who need it most.
Emergency & disaster relief
QuenchSea turns seawater into drinking water instantly — deployable quickly and at low cost to help communities prepare for and recover from disasters.
Sponsorship & CSR
Be part of our pledge to donate 100 million devices by 2030. Sponsor a project and provide access to clean water through your organisation.
Humanitarian partners
Questions
Frequently asked
Does QuenchSea need a battery?+
No. QuenchSea 3.0 is manually operated and does not require a battery, electricity, solar panel or fuel. Fresh water is produced by hand-pumping seawater through the reverse osmosis system.
How long will the QuenchSea unit last?+
QuenchSea 3.0 is designed as a durable, reusable device. The main unit can last for years if properly cleaned, flushed, stored and maintained. The consumable parts, such as the pre-filters and reverse osmosis membranes, will need to be replaced over time depending on usage, seawater quality and storage conditions.
What are reverse osmosis membranes?+
Reverse osmosis seawater membranes are very thin, semi-permeable filters used to turn seawater into fresh water. They allow water molecules to pass through while blocking most dissolved salt, minerals, bacteria and other impurities. In QuenchSea, hand pressure pushes seawater through the membrane, separating fresh drinking water from the concentrated salty brine.
Does QuenchSea have a pre-filtration system?+
Yes. QuenchSea 3.0 includes a pre-filtration system designed to remove larger particles, sediment, sand and other suspended matter before the seawater reaches the reverse osmosis membrane. This helps protect the membrane and improves the overall life and performance of the unit.
How much water can QuenchSea produce?+
QuenchSea 3.0 is designed to produce approximately 6–8 litres of fresh water per hour, depending on seawater salinity, water temperature, filter condition and pumping speed.
Can I use QuenchSea for freshwater filtration?+
Yes, QuenchSea can be used with freshwater sources, but it is primarily designed for seawater desalination. For freshwater it may be more advanced than necessary, because reverse osmosis is a high-pressure filtration process. QuenchSea should not be used with water contaminated by chemicals, fuel, oil, pesticides or industrial waste.
What is QuenchSea 3.0 used for?+
QuenchSea 3.0 is a portable manual seawater desalination device designed to produce fresh drinking water from seawater in emergency, marine, survival, humanitarian and off-grid situations.
Is QuenchSea suitable for liferafts and emergency use?+
Yes. QuenchSea is designed for situations where access to drinking water is limited, including liferafts, boats, coastal emergencies, disaster response and survival kits.
Does QuenchSea remove salt from seawater?+
Yes. QuenchSea uses seawater reverse osmosis membranes to remove the majority of dissolved salts from seawater, producing fresh water suitable for drinking when used correctly.
Does QuenchSea remove bacteria and viruses?+
Reverse osmosis membranes can block most bacteria and many other microorganisms due to their very fine pore structure. However, water quality depends on the source water and correct use of the device. Heavily contaminated water should be avoided.
Can QuenchSea remove chemicals or fuel contamination?+
No. QuenchSea should not be used with water contaminated by fuel, oil, solvents, pesticides, industrial chemicals or other hazardous substances. Reverse osmosis is designed mainly to remove salts, minerals and many biological contaminants, but it is not a guarantee against all chemical pollution.
How does QuenchSea work?+
Seawater is drawn into the unit, passed through pre-filtration, and then pushed by hand pressure through a reverse osmosis membrane. Fresh water exits one outlet, while concentrated salty brine is discharged separately.
How long does shipping take?+
Please allow up to 4 weeks for delivery from the date of your order.