Wisconsin DNR Tables Proposed Nitrate Rule Change by WORT 89.9FM Madison published on 2021-11-19T00:13:46Z Picture taken from Pixabay user 12019 / 10259 images. Nitrates are chemicals typically used in farming that have a nasty habit of leaking into and damaging groundwater, particularly in areas with permeable topology. The DNR planned to implement rules to help deal with nitrate contamination in Central Wisconsin-- but it looks like those rules won’t be coming anytime soon. Genre News & Politics