E. coli in Canada, again, page-4

Actually this is a big positive for Rotogro/Gibio

Our patent pending fertigation system ensures the water coming in is 100% contaminant free, it continually monitors the water/nutrient mix and then ensures it is within acceptable standards before the waste is released to the environment. The system also uses less water than most hydroponic systems further reducing the risk.

If that is not enough they could also employ the Gro3 technology their partner Amfil provides, though very much doubt that would be needed. Also the small grow rooms & computer tracking would ensure in the very unlikely case something does happen to a crop, it is only a very small part of the total.

The method Gibio's Cos/Romaine lettuces are grown will be a very big positive and allow price premiums.