MI-20 Ground Water Issues and Answers Download Publication Details Produced by the American Institute of Professional Geologists (AIPG), the purpose of this publication was to provide policy makers, legislators, and the general public with information and data to better understand US groundwater resources. This is an introductory level publication and includes topics such as defining what is groundwater, how aquifers store and transmit water, and groundwater resources in geologic regions. It discusses major groundwater problems and sources of contamination and provides information required for decision-making regarding groundwater resources. MI-20D Citations Davis, George H. MI-20 Ground Water Issues and Answers. Miscellaneous Investigations, MI20. Arvada, CO: American Institute of Professional Geologists, 1985. https://coloradogeologicalsurvey.org/publications/ground-water-issues-answers.