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
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Worldwide shipping
6–8L/hr
Fresh water output (1.6–2.1 US gal/hr)
MROD
Manual Reverse Osmosis Desalinator
New launch
QuenchSea 3.0 is here
As featured in
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CNN
WIRED
Gizmodo
New Atlas
euronews
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Travel + Leisure
QuenchSea in a nutshell
Survival-grade clean water, anywhere the sea is
6-8 litres per hour
1.60 to 2.10 US gallons of drinkable fresh water every hour — up to 192 litres (51 US gallons) 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 (870 psi) of pressure. No batteries, no electricity, no fuel required.
Removes dissolved salt
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 Watch the instruction video
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, 870 psi) 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 (800–870 psi) 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 dissolved salts
- Filters bacteria, parasites & microplastics
- Easily replaceable, affordable membranes
Seawater to fresh water
Get your QuenchSea
QuenchSea 3.0 Desalination Device
Seawater To Fresh Water
QuenchSea 3.0 is a groundbreaking, low cost, portable, manually powered device that turns seawater into drinkable freshwater.
Includes RO membranes, a ceramic and stone pre-filter and an ultrafiltration pre-filter
6–8 L/hr
Fresh water (1.6–2.1 US gal/hr)
$400
- 3-month limited warranty
- Test output before drinking
Spare parts
RO membranes, 2-pack
Advanced Reverse Osmosis Membranes. Capacity 6-8 litres per hour / 1.60-2.10 US gallons per hour. The unit comes with one unit pre-installed, so these are spares. You will receive 2 x QuenchSea RO Membranes SW1708. Please note these RO membranes only work with QuenchSea version 3.0
$60
Ultrafiltration pre-filters, 2-pack
Fit it for very murky or high-turbidity water. 0.01-micron hollow-fibre ultrafiltration traps fine silt, suspended solids and microplastics before they reach the RO membranes, so the membranes last longer. You will receive 2 x QuenchSea Pre-filters
$40
TDS pen
The ultimate TDS water tester can tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million) before and after you use QuenchSea. Anything below 1,000 ppm is drinkable water. This TDS pen can test also seawater salinity levels.
$40
Ceramic and stone pre-filters, 2-pack
Coarse 20-micron ceramic and stone pre-filter removes visible suspensions such as sediment and floating material. The unit comes with this pre-filter fitted, so these are spares. Includes 2 × pre-filters.
$20
The detail
Technical specifications
Desalination capacity
6-8 L/hr (1.60-2.10 US gal)
Technology type
Reverse osmosis membrane
Weight
6 kg — 13 lbs
Seawater feedflow rate
20 litres (5.3 US gallons) per hour
Pressure
5.5 MPa (800 psi)
Pressure release valve
Set at 6.0 MPa (870 psi) release
Max feed water temp
45°C / 113°F
Output quality
Below 1,000 TDS
Pre-filtration
Ceramic and stone pre-filter fitted. Ultrafiltration pre-filter in the box, for murky water
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.
Applus
Applus 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
No questions match your search.
Important drinking-water warning
Do not assume filtered water is safe based on appearance alone — partially desalinated seawater may not taste strongly salty. Test a small amount first, do not consume water that tastes salty or unusual, and check the output with a TDS meter where possible; only drink when the reading is below 1,000 ppm TDS. If you are uncertain whether the water has been properly filtered, do not drink it.