Groundwater provides nearly 50 percent of the Nation’s drinking water. To help protect this vital resource, the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Project assesses groundwater quality in aquifers that are important sources of drinking water (Burow and Belitz, 2014). The Cambrian-Ordovician aquifer system constitutes one of the important areas being evaluated.
Stackelberg, Paul, 2017, Groundwater quality in the Cambrian-Ordovician aquifer system, midwestern United States: U.S. Geological Survey Fact Sheet 2017–3056, 4 p., https://doi.org/10.3133/fs20173056.
ISSN: 2327-6932 (online)
Additional publication details
|Publication Subtype||USGS Numbered Series|
|Title||Groundwater quality in the Cambrian-Ordovician aquifer system, midwestern United States|
|Series title||Fact Sheet|
|Publisher||U.S. Geological Survey|
|Publisher location||Reston, VA|
|Contributing office(s)||National Water Quality Assessment Program|
|State||Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Wisconsin|
|Other Geospatial||Cambrian-Ordovician Aquifer System|