WRO's VS cental RO

G'day;

I was wondering if anyone knows of any small dialysis units that opted to use small portable RO's at each station rather than getting a central water system?

The central systems seem to be getting much larger and much more expensive which got me to thinking that using a small central pretreatment setup and feeding that to the unit in place of the product loop would be much cheaper and easier to setup.  A little more monthly sampling, but the maintenance could be done midweek and if one went down, you lose a station, not the whole unit.

Thanks!
James