Reverse osmosis
Reverse osmosis pushes water through a very fine membrane, leaving salts, nitrate and most dissolved solids behind. Ideal for drinking and cooking water where the taste is salty or bitter.
How it works
Four steps inside the system
- Sediment and carbon pre-filters protect the membrane
- The membrane separates clean water from concentrate
- A remineralising cartridge restores taste
- A storage tank keeps clean water ready at the tap

Specifications
The numbers
- Under-sink unit
- 300 litres a day
- Commercial unit
- 1,000 to 20,000 litres a day
- Dissolved solids removed
- Typically over 90%
- Membrane life
- About 2 years with service
Example rates
Installed prices
| Size | Installed in Asaba |
|---|---|
| Kitchen tap unit | ₦380,000 |
| Whole-house drinking line | ₦1,150,000 |
| Commercial, per 1,000 litres a day | ₦1,900,000 |
Example rates including a retest three weeks after installation.
Questions
Common questions
Do I need a test first?
Yes. We size every system from a recent test, so you only pay for what your water needs.
What maintenance does it need?
A check every quarter and cartridge changes on schedule. Our service plans cover both.
Will it work on solar power?
Yes. Pumps and controllers are chosen to run on a small solar and inverter setup.
Start with a test
The borehole full profile tells us exactly how to size it.