There's a term called "ORP". That's short of oxidation (or oxygen) reduction potential. It's how much oxygen is in the water to break down contaminants.
Results: in the recent tests, our system took dirty fish farming water and returned it at 740 mV.
What does this mean? Look at the table below: ORP Level (mV) Application 0-150 No practical use 150-250 Aquaculture 250-350 Cooling Tower 400-475 Swimming Pools 450-550 Hot Tubs 600 Water Disinfection 740 OriginOil Aquaculture Test 800 Water Sterilization 950 and UP Water for therapeutic use