The IWS Denitrification Upflow Filter (Upflow Filter) is getting nationwide attention as clients need a simple, cost effective solution to meet reduced Total Nitrogen (TN) levels for their onsite wastewater effluent. From California to Rhode Island, there is great interest in the IWS patent pending Upflow Filter which utilizes a sustainable wood based media filter to denitrify wastewater effluent. The IWS performance guarantee, simple operation, low maintenance, excellent operating results, favorable economics, and regulatory acceptance have made the IWS Upflow
Filter the preferred solution for the onsite industry.