BWT Lagoon – Under-sink reverse osmosis system with remineralization
Filtered, remineralized, and pleasant-tasting water directly from your kitchen.
Available for online purchase – €799 incl. tax
Price for the complete unit only. The BWT Lagoon must be installed and commissioned by a certified professional. Installation is not included in the displayed price.
The BWT Lagoon is a direct flow reverse osmosis system designed for discrete under-sink installation. Compact and tankless, it filters water on demand through five treatment stages combined in just three cartridges, then remineralizes it at the end of the filtration process.
Why choose the BWT Lagoon?
- Reverse osmosis filtration of undesirable substances, including PFAS, heavy metals, nitrates, and pesticides.
- Direct flow system, no storage tank.
- Water remineralization for a more pleasant taste.
- Integrated booster pump.
- Automatic flushing upon startup or after a period of inactivity.
- LED indicators to monitor cartridge status.
Comprehensive 5-stage filtration
The BWT Lagoon combines pre-filtration, a reverse osmosis membrane, and post-filtration with remineralization. This system effectively reduces many undesirable elements present in tap water while maintaining a compact unit.
Compact, fast, and water-efficient
At just 14 cm wide, it easily fits into most under-sink cabinets. Its nominal flow rate reaches 1.5 to 1.7 liters per minute. For every 1 liter of filtered water produced, the reported waste volume is approximately 0.5 liters.
Technical specifications
| Type | Direct flow reverse osmosis system |
|---|---|
| Remineralization | Yes |
| Nominal flow rate | 1.5 to 1.7 L/min |
| Conversion rate | 2:1 |
| Dimensions W × H × D | 140 × 440 × 360 mm |
| Operating pressure | 1.5 to 5 bar |
| Power supply | 220 V / 50 Hz |
| Power | 60 W |
| Membrane | 500 GPD |
| BWT reference | 125690609 |
| Legal conformity warranty | 2 years |
Simplified maintenance
The front panel of the unit provides direct access to the three cartridges. Indicator lights show their status: blue for normal operation, flashing red for upcoming replacement, and solid red when replacement is needed.
| Consumable | Recommended frequency | Reference |
|---|---|---|
| PPC pre-filter | Every 12 months | 125692091 |
| RO membrane | Every 30 months | 125692092 |
| TCA post-filter + remineralization | Every 24 months | 125692093 |
Discover the BWT Lagoon in video
Installation by BDS Hydro Tech
The installation and commissioning of the BWT Lagoon must be carried out by a certified professional. Installation requires a cold water inlet, connection to the drain, a nearby electrical outlet, and the installation of the provided dispensing faucet. For a local quote, we will ask for a clear photo of the inside of your under-sink cabinet to check available space and existing connections.
Buy the unit or request your installation
The online price is for the complete unit only. For installation in Antibes and surrounding municipalities, please attach a photo of your under-sink cabinet to your request.
Buy the Lagoon – €799 Request an installation quoteThe performance and maintenance frequencies indicated are from BWT technical documentation. The actual replacement frequency may vary depending on water quality and usage level.
