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On August 12, 1993, the Edwards Underground Water District (EUWD) received a completed application form from Springs Hill Water Supply Corporation requesting a leak detection/location survey on its water distribution system. A pre-survey conference was held January 28, 1994 at Springs Hill office to discuss the work to be performed. It was agreed that EUWD would perform sonic leak detection on all available access points, computerized leak location as needed, record any unusual system conditions found, and submit to Springs Hill a revised master water plat with the final report.

Mr. John Gapinski of EUWD began the survey on January 31, 1994, and the survey was concluded on March 28, 1994. Over the course of the survey, EUWD surveyed a total of 1,278 access points including 938 customer service connections, 60 fire hydrants, 232 main line valves, and 48 other access points covering 72.05 miles of distribution mains.

EUWD technicians detected a total of 42 leaks. This total included 3 meter box leaks, 7 service line leaks, 3 main leaks, 4 valve leaks, and 25 customer side leaks. EUWD estimates 36,914 gallons of water per day has been saved by the repair of 8 detected leaks as of March 28, 1994. The leaks discovered during the survey range from 15,840 gallons per day to numerous small customer side leaks.

As part of the survey, EUWD located 29 main line valves, 202 customer service connections, 23 fire hydrants, and .96 miles of distribution main not shown on the master water plats. EUWD staff was unable to locate 60 main line valves, 16 fire hydrants, and 77 customer service connections. An additional 13 valve stacks need cleaning and/or repair. EUWD noted 7 valve boxes missing lids and one fire hydrant missing a cap.