FAQ

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Stage One
Primary filtration for canal, river, lake or rainwater to fill your tank for general onboard use.

Stage One + Stage Two Bundle
For customers who want Stage One for source-water filtration into the tank, plus Stage Two for further polishing after the onboard pump or accumulator.

Stage One + Stage Two + RO Combo
Our highest-spec complete package, taking source water through primary filtration, polishing filtration and reverse osmosis for the highest level of drinking-water purification.

FinalStage RO
Standalone reverse osmosis and remineralisation system for ultra-pure drinking water from a dedicated tap.

Offgrid Rain
Purpose-built filtration for rainwater harvesting and suitable clean source-water setups.

Offgrid Water systems are designed to help you filter and use water from sources such as canals, rivers, lakes, rainwater systems and stored tank water.

Different systems do different jobs. Some are designed to fill your tank from untreated source water. Others are designed to improve drinking water that is already onboard.

Offgrid Water began after Damian built a filtration system for his own canal boat in London.

The aim was simple: make it easier to filter water from canals, rivers, rainwater systems and tanks without relying on marina water points.

Offgrid Water systems are built for real-world use, not just theory. We have well over 300 units out in the wild and working across a wide range of off-grid and marine setups.

We are a customer-first business and we continuously improve our products based on direct customer feedback, field use and practical testing.

This means the systems you see today reflect ongoing refinement in areas such as reliability, usability, safety and ease of installation.

Our approach is simple: listen carefully, improve constantly, and build products that work properly in the environments they are actually used in.

Stage One
Choose Stage One if you want to take water from a canal, river, lake or rainwater source and filter it into your tank for washing, showering and general domestic use.

Stage One + Stage Two Bundle
Choose this if you want Stage One to filter source water into your tank, and Stage Two to improve that stored water after your onboard pump or accumulator.

Stage One + Stage Two + RO Combo
Choose this if you want the most complete setup, taking water from source filtration through to high-quality remineralised drinking water.

FinalStage RO
Choose FinalStage RO if you want the highest level of purification at a dedicated drinking tap.

Offgrid Rain
Choose Offgrid Rain if you want a system specifically designed for rainwater harvesting, or for other suitable clean source-water setups.

If you are drawing directly from untreated canal, river, lake or rainwater, Stage Two on its own is not a substitute for a proper Stage One source-water setup.

Stage One is your primary source-water filtration system. It is designed to take water from canals, rivers, lakes or rainwater and make it suitable for general domestic use and as a feed into further purification.

Stage Two is a polishing filter for water that is already in your onboard tank or has already been filtered. It is installed after your onboard pump or accumulator and improves taste, odour and final water quality.

FinalStage RO is the highest purification level and is designed to provide ultra-pure remineralised drinking water through a dedicated drinking tap.

These systems do different jobs, so choosing the right one matters.

Yes. Orders can still be placed through the website as normal.

Please order directly through the site rather than emailing to place an order.

Lead times vary by product and demand. Please check the relevant product page before ordering.

As a guide, Stage One and the bundle pages currently state approximately 1 to 2 weeks for delivery, while FinalStage RO is typically 2 to 3 weeks due to batch production and configuration requirements.

Please check the live product page for the latest lead time before contacting us for an update.

Yes. Please read the customer information and installation guidance fully before starting:

View customer information and instructions

Please read the instructions fully before cutting hose, mounting components or connecting fittings.

If you are unsure whether a system will fit your space, check the product dimensions before ordering.

No. Offgrid Water systems are designed for DIY installation and we do not offer installation services.

Please check the dimensions carefully before ordering and make sure you have enough installation space.

If you are tight on space, check dimensions before ordering rather than after delivery.

Please check the product page for the standard fittings supplied with each system before ordering.

If you need a different connection size or plumbing arrangement, contact us before ordering, not after delivery.

Requests to change fittings after an order has been built may not always be possible.

Possibly, but this must be agreed before you order.

If you need a non-standard fitting size, a specific hose arrangement or a custom layout, please contact us before purchase with clear details and photos if relevant.

Most Offgrid Water source-water systems include an onboard pump for drawing water from a source such as a canal, river, lake or tank.

Stage Two does not include a pump and must be installed after your existing onboard pump or pressure system.

Do not use the Stage One pump to run Stage Two.

Please check the product page for the power requirements of your chosen system before ordering.

• Stage One: 200W, with 12V or 230V adapters supplied
• Stage Two: 0W, passive filtration
• FinalStage RO: 230V 3-pin plug, 75W, with a 12V option available
• Offgrid Rain: 230V, 200W while operating, 0W on standby

If you are installing onto a boat, campervan or other off-grid setup, make sure your electrical supply is suitable for the unit you are buying.

Flow rate depends on the product, the condition of the filters, the water source, the pipework and how the system has been installed.

• Stage One: typically 10 to 12 litres per minute
• Stage Two: up to 16 litres per minute, depending on your existing pump and setup
• FinalStage RO: approximately 1.6 litres per minute
• Offgrid Rain: typically 8 to 10 litres per minute on the pump version, and up to 15 litres per minute on the non-pump variant

Dirtier source water and partially blocked filters will reduce flow. Air leaks, poor hose routing or unsuitable fittings can also affect performance.

If flow drops noticeably after a period of use, the first thing to check is the filter condition.

This is usually caused by one of the following:

• a blocked or overdue filter replacement
• an air leak on the suction side
• a loose fitting or hose connection
• hose routing that allows air ingress or restriction
• an issue with source water pickup or feed arrangement

Check filters first. Then check all hose runs, seals and connections carefully.

In most cases, a pump stopping or struggling indicates a blocked filter that needs replacing.

Please check and replace filters first before reporting a fault.

If you have added extra restriction incorrectly, such as trying to run Stage Two off the Stage One pump, stop using the system in that configuration immediately.

The customer information page also covers common causes of reduced flow and pump issues:

View troubleshooting and customer information

If the issue continues after this, contact us with your order number, a description of the problem, and photos or video if possible.

If you notice a leak, switch the system off and inspect all fittings, housings, seals and threaded connections carefully.

Many leaks are caused by a loose fitting, incorrect installation or a seal not seated properly.

Some jubilee clamps or hose clips may need tightening from time to time as hoses bed in.

If the leak appears to be from a component itself, contact us with photos or video so we can assess it quickly.

Please contact us as soon as possible after delivery with your order number and clear photos.

If a part is genuinely faulty, damaged in transit or missing from the order, we will work with you to resolve it.

Please first check that the correct system has been chosen for your use case and that it has been installed correctly.

Performance can be affected by source water quality, filter condition, installation method, pressure, air ingress and maintenance.

Stage One is for source-water filtration into your tank. Stage Two refines already stored water. FinalStage RO provides the highest level of drinking-water purification.

If you believe there is a genuine product issue, contact us with your order number and as much detail as possible, including photos or video where relevant.

Filter life depends heavily on the water source and how much water you are using.

Dirtier water will block filters more quickly. Reduced flow is often the first sign that a filter needs replacing.

• Stage One: approximately 1,500 to 2,000 litres
• Stage Two: typically 4 to 8 months
• FinalStage RO: typically 12 to 24 months
• Offgrid Rain: approximately every 2,000 to 10,000 litres depending on source water

Please follow the relevant guidance for your system and water source.

Yes. Replacement filters and related parts are available.

Please make sure you order the correct replacements for your system.

Offgrid Water systems include a two-year warranty covering mechanical and electrical components.

Pumps carry a one-year warranty.

Filters, UV elements and related consumables are replaced periodically depending on use.

Please refer to our returns and cancellation policy on the website before ordering.

If you need to request a cancellation, contact us as quickly as possible with your order number.

Once a build has been started or a system has been made to an agreed specification, cancellation or return options may be more limited.

If your boat location, delivery needs or timing changes after placing your order, please contact us as soon as possible.

We will do our best to help where possible, but changes cannot always be guaranteed once an order is in progress or has shipped.

If your question is not answered above, please contact us by email or WhatsApp.

To help us deal with your query quickly, please include your order number and clear details of the issue.