Below are the test results of E-Z Treat system in a high strength waste application. This was a repair of a failed High Strength Aerobic Treatment Unit at a restaurant. The effluent from the ATU plugged the drip field and the tubing had to be replaced. The health department required the effluent achieve TL-1 or residential (180 BOD) strength before dispersal to the subsurface drip tubing. The solution was to install two E-Z Treat Model # 1200 Re-Circulating Synthetic Sand/Gravel Filter. The state required monthly testing the first 6 months and annual testing thereafter. The average daily flow is 1,500 GPD. The system has been operation for about 8 years and the media has not been replaced or cleaned.