New Pilot Test Study Confirms GreensandPlus™ Outperforms Competitive Media In Removing Iron And Manganese From The Dennis, MA Water Supply

By Inversand Company

During April and May of 2007, Earth Tech Inc.– Concord, MA conducted a pilot study examining the effectiveness of potential treatment options for iron and manganese removal at several of the Dennis Water District's groundwater supplies.

Two separate treatment technologies were evaluated on each well during the study; a multimedia pressure filter with Inversand's GreensandPlus media (GreensandPlus system) and a pressure filter with Layne Christensen's LayneOx media (LayneOx system). The primary piloting objective was to demonstrate stable system performance while meeting drinking water treatment objectives for select parameters including iron and manganese. Here is a summary of the operational and analytical results obtained from the pilot study.