Zoom in and click on points to see more detail about each water monitoring location from 2012 to 2019. Data taken from various federal and state government agencies (table below).
|Resource||Agency||Nitrogen characteristic||Phosphorus characteristic|
|Drinking water||USEPA Safe Drinking Water Information System (SDWIS)||Nitrate as N||N/A|
|Groundwater||USGS, Iowa DNR, Wisconsin DNR, Minnesota DNR and Illinois State Water Survey||Total nitrate, Dissolved nitrate||Total phosphorus, Dissolved phosphorus, Total phosphorus-phosphate|
|Surface water||USGS, EPA||Total nitrate, Dissolved nitrate||Total phosphorus, Total phosphorus-phosphate|
Use the monitoring station sliders on the left to query water contamination levels. Toggle monitoring layers on and off using the green switch above the slider. The sliders below allow users to query counties by the percent of cropland that received fertilizer or manure and has been harvested. Data taken from the USDA’s 2017 Census of Agriculture.
Hit the ‘reset slider’ button to start a new query.