The Friends of Northern Lake Champlain, the Natural Resource Conservation Service (NRCS), the Agency of Agriculture Food and Markets, and Stone Environmental, have implemented an end of tile drain treatment system. This project was funded through a Conservation Innovation grant and was installed on a farm in Franklin. The goal of the project is to test two different media, drinking water residuals and a limestone bedding, on their effectiveness at removing phosphorous from the discharging tile drain water.
A tile drainage system on a farm is a practice that removes excess water from farm fields. A typical system is composed of plastic pipes spread out evenly underneath the field, which then discharge to the nearest ditch. This helps reduce in-field flooding and to keep the field dry. Recently, researchers have found that the water being discharged into the ditch have variable levels of phosphorous.