The EC-P from Waterloo Biofilter Systems is designed to permanently remove phosphorus from wastewater installations using electrochemistry. Phosphorus is removed without the use of any chemicals, no sludge production, little energy use and no effect on pH. It precipitates Fe-P minerals onto a filtration medium where they remain highly stable and unavailable to microbes. Units are modular, allowing the system to be easily scaled from 1,000 to more than 50,000 gpd. It can be used for retrofits and new installations, and in conjunction with advanced treatment units or conventional soil-based beds. Greater than 98 percent of phosphorus is removed before entering groundwater supplies, according to the maker. 519/856-0757; www.waterloo-biofilter.com.