© 2025 FilterCY
Submit an application
Fill the form and we will contact you as soon as possible
By clicking the Submit button, you agree to our Data Privacy
Find the right water filtration system in 1 minute.
Answer a few quick questions and get personalized recommendations for the best water filtration system for your home — with a discount: a drinking water filter, water softener, or whole-house filtration system.
BWT bestaqua ROC COFFEE Reverse Osmosis System
€
2500
€
BWT bestaqua ROC COFFEE is a professional reverse osmosis system developed specifically for coffee, espresso and other hot beverages.
The system first uses a high-performance reverse osmosis membrane to remove more than 97% of dissolved salts, significantly reducing the influence of local water hardness and varying mineral composition.
The RO-treated water then passes through the BWT bestaqua PREMIUM cartridge with BWT Magnesium Technology. Remaining calcium is exchanged for magnesium to create a controlled mineral composition optimised for coffee extraction while reducing the potential for limescale and gypsum deposits in professional coffee equipment.
The final treatment stage also incorporates activated carbon and an ultrafiltration membrane, providing additional refinement of the water before it reaches the coffee machine.
With a nominal output of up to 120 litres per hour, BWT bestaqua ROC COFFEE is suitable for specialty coffee shops, restaurants, hotels and other professional applications where consistent coffee quality and equipment protection are essential.
A separate upstream particle and activated-carbon pre-filtration stage is recommended before the reverse osmosis system and is installed separately.
The system first uses a high-performance reverse osmosis membrane to remove more than 97% of dissolved salts, significantly reducing the influence of local water hardness and varying mineral composition.
The RO-treated water then passes through the BWT bestaqua PREMIUM cartridge with BWT Magnesium Technology. Remaining calcium is exchanged for magnesium to create a controlled mineral composition optimised for coffee extraction while reducing the potential for limescale and gypsum deposits in professional coffee equipment.
The final treatment stage also incorporates activated carbon and an ultrafiltration membrane, providing additional refinement of the water before it reaches the coffee machine.
With a nominal output of up to 120 litres per hour, BWT bestaqua ROC COFFEE is suitable for specialty coffee shops, restaurants, hotels and other professional applications where consistent coffee quality and equipment protection are essential.
A separate upstream particle and activated-carbon pre-filtration stage is recommended before the reverse osmosis system and is installed separately.
Have a questions? Message us!
Professional Coffee Water
Professional Water Optimisation for Better Coffee
BWT bestaqua ROC COFFEE is a compact professional reverse osmosis system designed specifically for coffee, espresso and other hot beverages. It combines high-performance reverse osmosis with BWT Magnesium Technology to create consistent water conditions for professional coffee preparation.
01
Consistent Coffee Water
Reverse osmosis significantly reduces the influence of local water hardness and mineral composition, helping create predictable water quality for professional coffee preparation.
02
BWT Magnesium Technology
The BWT bestaqua PREMIUM cartridge optimises the RO-treated water with magnesium, helping create favourable conditions for coffee extraction and flavour development.
03
Coffee Machine Protection
The system reduces minerals responsible for limescale and gypsum deposits while maintaining controlled mineralisation suitable for professional coffee equipment.
Technology
How BWT bestaqua ROC COFFEE Works
The system combines reverse osmosis with BWT Magnesium Technology and additional filtration to create optimised water specifically for coffee and other hot beverages.
1
Reverse Osmosis
Incoming drinking water passes through the BWT bestaqua high-performance membrane. More than 97% of dissolved salts are retained, significantly reducing the influence of the original water composition.
→
2
Magnesium Optimisation
The water then passes through the BWT bestaqua PREMIUM module. Calcium remaining in the water is exchanged for magnesium, helping provide balanced mineralisation for coffee extraction.
→
3
Final Coffee Water Treatment
The coffee water is additionally optimised through activated carbon and an ultrafiltration membrane, producing hygienically refined water for professional beverage preparation.
01 Incoming Water
02 Pre-Filtration
03 Reverse Osmosis
04 Magnesium Optimisation
05 Coffee Machine
Technical Data
Technical Specifications
Key technical characteristics of the BWT bestaqua 14 ROC COFFEE professional reverse osmosis system.
| Permeate output | 2 L/min / 120 L/h |
| Salt retention rate | >97% |
| Water Conversion Factor (WCF) | Approx. 50% |
| Minimum feed water flow | 4.2 L/min / 250 L/h |
| Concentrate flow rate | Approx. 2.0 L/min / 120 L/h |
| Feed water pressure | 1.5–4 bar |
| Feed water temperature | 5–30°C |
| Ambient temperature | 5–40°C |
| Power supply | 220–240 V / 50–60 Hz / 10 A |
| Power consumption | 200 W |
| Standby consumption | <3 W |
| Protection rating | IP21 |
| Feed water connection | M ¾" |
| Permeate connection | M ⅜" |
| Concentrate connection | John Guest 8 mm |
| External tank connection | John Guest 8 mm |
| Dimensions (W × D × H) | 277 × 297 × 505 mm |
| Dry weight | 17.7 kg |
| RO membrane | BWT bestaqua 14 Membrane |
| Magnesium cartridge | BWT bestaqua 14 PREMIUM |
| Membrane nominal flow | 120 L/h |
| PREMIUM cartridge nominal flow | 120 L/h |
| Typical PREMIUM cartridge capacity | 6,000 L at 150 µS/cm |
| Additional filtration | Activated carbon + ultrafiltration membrane |
| Ultrafiltration performance | Log 6 bacterial retention |
| Controls | Electronic control with Bluetooth interface |
| Integrated tank | Yes |
| Product order number | RS82M01A00 |
Separate Pre-Filtration Is Recommended
BWT bestaqua ROC COFFEE does not replace the upstream particle and activated-carbon pre-filtration stage.
BWT recommends installing a feed-water pre-treatment system or a particle and activated-carbon filter, such as BWT besttaste, before the reverse osmosis unit. This upstream pre-filtration is installed separately.
Water Supply → Particle + Carbon Pre-Filter → BWT bestaqua ROC COFFEE → Coffee Machine
* Nominal performance is specified for operation without permeate back-pressure at a water temperature of 15°C. Actual performance may vary depending on feed-water quality, temperature, pressure, operating conditions and system settings.
Applications
Designed Specifically for Professional Coffee
BWT bestaqua ROC COFFEE is developed for professional hospitality environments where water quality directly affects coffee extraction, flavour consistency and equipment protection.
Specialty Coffee Shops
For cafés where predictable mineral composition and consistent extraction are essential for presenting the intended flavour profile of different coffees.
Restaurants & Hotels
For hospitality environments requiring reliable coffee quality while reducing variations caused by local drinking-water hardness and mineralisation.
Professional Espresso Machines
For commercial coffee equipment where controlled water mineralisation helps combine flavour optimisation with protection against limescale and gypsum deposits.
Reverse osmosis is only the beginning.
BWT adds magnesium back where coffee needs it.
FAQ
Frequently Asked Questions
Key questions about BWT bestaqua ROC COFFEE and professional water optimisation for coffee.
What is BWT bestaqua ROC COFFEE designed for?
+
It is designed specifically for professional preparation of coffee, espresso, coffee specialities, tea and other hot beverages. The system combines reverse osmosis with BWT Magnesium Technology to create optimised coffee water.
How is it different from a standard reverse osmosis system?
+
A conventional reverse osmosis system primarily removes dissolved minerals. BWT bestaqua ROC COFFEE goes further by subsequently treating the water with the BWT bestaqua PREMIUM cartridge and BWT Magnesium Technology, creating water specifically optimised for coffee.
Why does BWT add magnesium to coffee water?
+
BWT uses magnesium as part of its coffee-water optimisation concept. The bestaqua PREMIUM cartridge replaces remaining calcium with magnesium, helping support coffee extraction while reducing the potential for calcium-based deposits.
Does the system remove limescale-forming minerals?
+
Yes. The reverse osmosis membrane has a salt retention rate above 97%, substantially reducing calcium and other dissolved minerals. The subsequent BWT bestaqua PREMIUM stage further optimises the mineral composition.
Does the system include activated carbon filtration?
+
The BWT bestaqua PREMIUM treatment stage includes activated carbon as part of the final optimisation of coffee water. However, BWT still recommends a separate upstream particle and activated-carbon pre-filter before the ROC system.
Does BWT bestaqua ROC COFFEE need a separate pre-filter?
+
Yes, upstream feed-water pre-treatment is recommended. BWT specifically recommends a particle and activated-carbon filter such as BWT besttaste before the reverse osmosis system. This pre-filtration stage is installed separately.
Does the system include ultrafiltration?
+
Yes. The BWT bestaqua PREMIUM module includes an ultrafiltration membrane. BWT specifies a bacterial retention performance of log 6 for this filtration stage.
What is the production capacity?
+
The nominal permeate output is approximately 2 litres per minute, equivalent to 120 litres per hour. Actual output depends on feed-water temperature, quality, pressure and permeate-side back-pressure.
Does the system have an integrated water tank?
+
Yes. BWT bestaqua ROC COFFEE includes an integrated tank designed to provide reliable availability of optimised, magnesium-treated coffee water. An external tank connection is also provided.
Can the system be controlled digitally?
+
Yes. The system includes electronic sensor and control technology together with a Bluetooth interface for monitoring and controlling relevant operating parameters.
How often should the filters and membrane be replaced?
+
BWT recommends replacing the filter cartridge after six months, and no later than twelve months or when its capacity is reached. The RO membrane should normally be replaced after twelve months, and no later than twenty-four months or when performance is reduced.
Have a question?
