Free water test

- A specialist comes to your home
- Measures TDS and hardness on the spot
- Reads the result with you
- Suggests a suitable system and never pushes one
Aksu installs water filters for homes and offices in Baku. Tap water passes through five stages and reaches the glass as drinking water.
Baku's water travels more than 180 kilometres along the Samur–Absheron canal and the Oguz–Gabala water main. It is treated at the plant, but it passes through old pipes and reaches your tap hard and tasting of chlorine.

Each stage takes out one layer of the water. The order is deliberate: coarse particles are caught first so the fine membrane does not clog early.
Polypropylene fibre holds back everything larger than 5 micron: sand, rust, pipe debris. It is the first gate, and it protects the filters after it.

Activated carbon from coconut shell absorbs chlorine and its smell. Chlorine also damages the membrane, so it is caught here.

Compressed carbon filters more finely. It takes out organic compounds, traces of pesticides and any remaining taste.

Under pressure, the water passes through a 0.0001 micron membrane. Dissolved salts, heavy metals, nitrates and bacteria go to the drain.

Calcium and magnesium go back into the clean water, and the final carbon polishes the taste. The water is soft but not empty.

Under sink, 5 stages
The main kitchen system: a separate tap, a 12 litre tank and up to 190 litres of drinking water a day.
Under sink, 6 stages
A mineraliser is added to the RO-5. It puts calcium and magnesium back into the water, so the taste is softer.
Whole-house filter
Fitted at the water inlet of the house. Every tap, the shower, the washing machine and the combi boiler get filtered water.
The same team from the test to the installation, then through years of cartridge changes.




Choose the system, the installation date and the number of people at home. See when each stage needs changing.
| Stage | Replace every | Next change |
|---|---|---|
| Sediment (PP) | 6 mo | – |
| Granular carbon | 6 mo | – |
| Carbon block | 6 mo | – |
| Reverse osmosis membrane | 24 mo | – |
| Final carbon | 12 mo | – |
This is an estimate. The technician confirms it after the water test.
Write your name and number, and we will call to agree a convenient time.