The Illinois Fertilizer & Chemical Association works in concert with water supply officials for Lake Springfield, Lake Decatur, Lake Vermilion, and Lake Bloomington/Evergreen to assess nitrate levels on a monthly basis and evaluate how nitrogen management practices can help keep levels well below 10 ppm. Along with IFCA, the Sangamon County SWCD and Springfield’s City Water, Light, and Power are partners on a 319 project to conduct N WATCH™ soil nitrogen sampling and to continue nitrogen rate trials with cooperating farmers, ensuring that the MRTN watershed recommendation is current and that farmers are using it. In 2018, nitrate levels in Lake Springfield were particularly low (below 2 ppm) all season long. The association also develops and distributes timely bulletins and other communication pieces focused on specific 4R practices in these watersheds.