Pre-Drill Water Supply Surveys aspwv2018-12-22T00:00:00-05:00December 22nd, 2018|Recommended Practices, Resources| The objective of a pre-drill survey is to establish a baseline for conditions that existed prior to drilling. Groundwater may contain some natural impurities or contaminants even with no human activity or pollution. Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkEmail