Greywater Filter | Off-Grid Water Filtration

This Greywater Filter offers an efficient, eco-friendly way to treat grey water from sinks, showers, and washing machines. Ideal for off-grid homes, static caravans, shepherds' huts, lodges or for anyone looking to reduce their environmental impact, reducing the amount of grey water discharged to the sewage network or sewage treatment plant / septic tank.

What's included?
- main tank body and lid
- 1 x 30 litre bag of filter material (for first 3 months)
- 5 x internal trays into which the filter material is spread
- 2 x vents and connecting pipework for inlet and outlet sides.

It "handles" about 300 litres of grey water per day, and allows occasional peaks of up to 50 litres per hour within that overall figure. (Note for context: a typical bath will require 100-150 litres whilst a shower uses from 6 to 15 litres per minute). To increase daily capacity additional units can be connected in series or in parallel (see documentation in the downloads section on this page). Do not connect to rainwater downpipes as the volume of rainwater will overwhelm the filter system.

Compact and frost-resistant, it’s easy to install and needs no electricity. Using natural bio-filters, it passively removes impurities and can be expanded by adding additional units in series to handle larger volumes. It’s a low-maintenance solution for sustainable grey water management all year round and is suitable for use indoors and outdoors.

Additional filter material can be bought from this site - you should aim to replace the filter material every three months. Used material can be disposed of in a composter / standard household waste bin.

The filtered water has a range of applications, provided that no grey water with harmful chemicals or excessive detergents have passed through the system. Although the unit tolerates small amounts of anti-bacterial and chlorine-based detergents, we advise the use of bio / eco detergents.

Where to use the filtered water:
- on ornamental plants or to irrigate of your lawn,
- not recommended to water edible plants to minimise any potential health risks.

NOTE: This unit is not suitable for "black water" (toilet waste) or rainwater.

The product sheet, instructions for use and a water quality report can be found in the "downloads" section on this page.