The Tersano Lotus system kills whatever might might be on your food with ordinary tap water and oxygen and keeps your food fresh longer.
Besides pesticide residue, when you think about food safety you have to concern yourself with bacteria and parasites. Certainly the recent lettuce recall due to Cyclospora suggests that these clean and dirty lists are not definitive. Despite their catchy names, you can become ill from e-coli bacteria on Clean Fifteen produce.
If you decide to purchase food safety and peace of mind, the Tersano Lotus does even more. You can use the ozone water created by this machine to clean your house better than bleach.