Domestic + drinking water
StageOne Complete Bundle
Filter canal, river, lake or rainwater for everyday domestic use and remineralised water for drinking and cooking at a separate tap. StageOne fills your tank; StageTwo polishes the water after...
For life beyond the water point
WATER.
ON YOUR
TERMS.
Water filtration for canal boats, rainwater setups and off-grid homes. Take water from your source and put it to work.
British designStageOne & Rain systems
300+ customersAcross UK waterways & off-grid setups
Standard filtersNo proprietary cartridge lock-in for StageOne & Rain
Free UK & EU shippingOn systems over £200
Choose your setup
Made for your everyday.
Domestic + drinking water
Canals & rivers
StageOne V3.1
Filter canal, river, lake or rainwater to fill your tank for washing, showering and general domestic use. A compact, portable system for boats, cabins, campervans and other off-grid installations.
Collected rainwater
Rain V2.0
Turn collected rainwater into filtered water for washing, showering and everyday domestic use. Plumb this compact, wall-mounted system into your water butt or storage tank for an automatic, on-demand supply.
Domestic + drinking water
StageOne + RO Bundle
Filter canal, river, lake or rainwater for everyday domestic use and remineralised water for drinking and cooking at a separate tap. StageOne fills your tank; StageTwo polishes the water after...
Already have suitable pre-filtration?
FinalStage RO →Developed by Offgrid Water
Designed & engineered in Britain.
Our StageOne and Rain systems are designed by founder Damian and UK-based product designers, and refined with every batch. Feedback from real installations helps us improve reliability and make the systems easier to use.
Meet Damian and read our storyBetter with every batch
Continual improvements to materials, components and ease of maintenance.
Specified as a complete setup
Filtration, fittings and accessories selected to work together, with clear installation guidance.
Start with the source
Where does your water come from?
01 / SURFACE WATER
Canals & rivers.
Fill your tank from freshwater sources. Compare tank-filling systems and drinking-water bundles.
Systems from £1,330.00 →02 / COLLECTED WATERRainwater.
Make use of water you already collect. Filtration for an existing tank or IBC.
Systems from £990.00 →03 / PRIVATE SUPPLIESBoreholes & wells.
Start with your water report and required output. Springs and other private supplies included.
Discuss your supply →Let's get the setup right
Your source.
Your space.
Your system.
Answer three quick questions about your water source, use and setup. Get a recommended system and current price, without waiting for an email.
If your supply needs a closer look, we’ll explain what information will help and carry your answers into the contact form.
Help me choose →Inside the system
StageOne V3.1
Hover over a numbered point or select a feature. On a phone, tap to explore.
£1,330.00View system →
Hover, tap or use the feature buttons. Where labelled, concealed components are marked on their casing; they are not exposed in this view.
Source
What water is it for?
Canal. River. Lake. Rain.
Connect the inlet to a suitable freshwater source using the supplied strainer and hose. StageOne filters the water as it fills your tank.
For washing, showering and general domestic use. Add FinalStage RO after suitable pre-filtration for a dedicated drinking-water supply. Freshwater only; not saltwater or brackish water.
Filters
Six cartridge stages
6 × 10-inch cartridges
Six cartridge stages treat the water before storage. The correct cartridge combination depends on the source and configuration.
Standard cartridge formats make replacement straightforward. Allow space to open the housings and change filters.
Uv-C
LED UV-C treatment
Integrated LED UV-C
The UV-C treatment stage is designed to inactivate bacteria, viruses and other microorganisms as water passes through the system.
The UV-C assembly sits inside the unit and is not visible from this angle.
Pump
Integrated brushless pump
10–12 L/min
The integrated brushless pump moves the filtered water into your storage tank. Output depends on the installation and filter condition.
An auxiliary priming pump is required if StageOne is installed more than 1 metre above the waterline. The pump itself is concealed in this front view.
Power
Choose your power supply
12V DC / 230V mains
Both power options are included, so you can choose the supply that suits your boat, cabin or other off-grid installation.
The front panel provides the system controls. Follow the instructions for your exact model when connecting power.
Frame
Built around a steel frame
Powder-coated stainless steel
The V3.1 frame protects the system components in a compact, portable format.
W56.5 × D32 × H36.5cm. Allow extra space for hoses and filter changes, and protect the system from frost.
REAL SYSTEMS. REAL LIFE.
See it working.
James: his system in everyday use
James walks through his Offgrid Water setup and how it works for him.
Follow the Boat: part one
A real-world review of the wall-mounted unit.
These customer videos include earlier models. Use the current product page for the specification and components supplied today.
@offgridwater
Life off the mains.
Recent posts, customer setups and the next batch taking shape. Follow along on Instagram.
HELP WHEN YOU NEED IT
A real person. A working system.
Choose online with the system finder. For installation questions, existing orders or an unusual setup, we’re here to help.