how many devices are needed?

For home use in small accomodation units normally one device, around the main water feed to the building, is sufficient. The MKR 500 devices have a capacity of 12 m3/day, which equals a peak comsumption of about 20 individuals. Especially designed devices are available for industrial applications. There are many Merus installations that have a delivery rate of more than 10.000 m3/hour.