The Ground Water Under the Direct Influence of Surface Water (GWUDISW) Presentation discusses topics such as; Factors that contribute to contamination of ground water, How to protect a well or spring, How GWUDISW is different from GW, How EPA Region 8 makes GWUDISW determinations, What is required if your source is classified as GWUDISW.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Ground Water Under Direct Influence of Surface Water (GWUDISW) Presentation (PDF)(23 pp, 961 K, 9/28/2015)