Author: Edwards Underground Water District

Description: Leak detection and location survey report for City of Leon Valley May 4, 1993-August 1993. Note similar report for June 15, 1993-July 2, 1993. Note: this function was taken over by the San Antonio Water System in 2006.

Report Number: 93-12

Location: Bexar County

Summary:

On August 9, 1991, the Edwards Underground Water District (EUWD) received a completed application form from the Green Valley Special Utility District (GVSUD) requesting a leak detection/location survey on its water distribution system. A pre-survey conference was held March 31, 1993 at the GVSUD 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 the District a revised master water plat with the final report.

John E. Gapinski of EUWD began the survey on May 12, 1993, and the survey was concluded on October 29, 1993. Over the course of the survey, EUWD staff surveyed a total of 6,370 access points including 4,742 customer service connections, 129 fire hydrants, 1,233 main line valves, and 266 other access points covering 337.12 miles of distribution mains. Computer leak sound correlation was performed on two locations.

EUWD technicians detected a total of 337 leaks. This total included 27 meter box leaks, 2 fire hydrant leaks, 26 service line leaks, 20 main leaks, 19 valve leaks, and 243 customer side leaks.

EUWD staff estimates 189,813 gallons of water per day has been saved by the repair of 93 detected leaks as of October 29, 1993. The leaks discovered during the survey range from 27,648 gallons per day to numerous small meter box leaks.

As part of the survey, EUWD staff located 25 main line valves, 2 fire hydrants, and .40 miles of distribution main not shown on the master water plats. EUWD staff was unable to locate 35 main line valves and C2 customer service connections. An additional 22 valve stacks need cleaning and/or repair.

Author: Gapinski JE and Shipley JR (Edwards Underground Water District)

Description: Leak detection and location survey report for City of Live Oak, 1995. Note: this function was taken over by the San Antonio Water System in 2006.

Report Number: 95-05

Location: Bexar County

Summary:

On May 5, 1992, the Edwards Underground Water District (EUWD) received a request from the City of Live Oak to perform a leak detection I location survey on its water distribution system. A pre-survey conference was held Decen'!-ber 14, 1994 at the City of Live Oak Public Works Center to discuss the work to be performed. It was agreed that EUWD would perform sonic leak detection on all available access points and computerized leak location as needed. A final report, including any unusual system condition found and an updated master water plat would be submitted to the City at the conclusion of the survey.

John E Gapinski of EUWD began the survey on February 6, 1995, and the survey .was concluded on April 7, 1995. Over the course of the survey, EUWD surveyed a total of 3,062 access points including 2,253 customer service connections, 177 fire hydrants, 551 valves, and 81 other access points covering 27.92 miles of distribution main.

Computer leak sound correlation was performed on 19 locations by EUWD. EUWD surveyors detected 35 utility side leaks and 97 customer side leaks for a total of 132 leaks. The utility side leaks included 27 service leaks, 5 meter box leaks, and 3 fire hydrant leaks. EUWD estimates 27,634 gallons of water per. day has been saved by the repair of 35 utility side leaks as of June 8, 1995. The leaks discovered during the survey range from 5, 100 gallons per day to numerous small meter box leaks.

As part of the survey, EUWD located 67 valves of various types, 15 fire hydrants, and 500 feet of main not shown on the master water plats. EUWD surveyors were unable to locate 25 valves of various types shown on the master water plats. An additional 11 items were discovered to need some type of repair or adjustment.

Author: Edwards Underground Water District

Description: Leak detection and location survey report for City of Leon Valley, June 15, 1993-July 2, 1993. Note similar report for May 4, 1993-August 1993, a time period included in this report. This function was taken over by the San Antonio Water System in 2006.

Report Number: 93-08

Location: Bexar County

Summary:

Note similar report for May 4, 1993-August 1993, a time period included in this report.

On December 7, 1992, the Edwards Underground Water District (EUWD) received a completed application form from the City of Leon Valley requesting a leak detection/location survey on its water distribution system. A pre-survey conference was held March 18, 1993 at the city Public Works Center to discuss the work to be performed.

At this time, Mr. James J. Malone, Director of Public Works for the City of Leon Valley, requested the District also perform a survey on the San Antonio Water System distribution system within the city limits of the City of Leon Valley. Approval for this survey was requested of and granted by Mr. Joe Aceves, President and Chief Executive Officer of San Antonio Water System. An additional pre-survey conference was held May 18, 1993 at the San Antonio Water system Northwest Service Center. 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 the San Antonio Water System a revised master water plat with the final report .

Mark L. McGinnis of EUWD began the survey on June 15, 1993, and the survey was concluded on July 2, 1993. Over the course of the survey, EUWD staff surveyed a total of 1,275 access points including 914 customer service connections, 81 fire hydrants, 255 main line valves, and 25 other access points covering 15.29 miles of distribution mains. Computer leak sound correlation was performed on one location.

EUWD technicians detected a total of 26 leaks. This total included 2 meter box leaks, 2 fire hydrant leaks, 6 service line leaks, 1 valve leak , and 15 customer side leaks. EUWD staff estimates 20,684 gallons of water per day have been saved by the repair of 26 detected leaks as of August 9, 1993. The leaks discovered during the survey range from 14,400 gallons per day to small meter box leaks.

EUWD staff was unable to locate 18 valves and 21 customer service connections. An additional 8 valve stacks need cleaning and/or repair. EUWD staff noted 1 water meter that was not registering accurately.

Author: Gapinski JE and Shipley JR (Edwards Underground Water District)

Description: Leak detection and location survey report for City of Converse, 1995 (published in 1996). Note: this function was taken over by the San Antonio Water System in 2006.

Report Number: 96-01

Location: Bexar County

Summary:

On May 12, 1995, the Edwards Underground Water District (EUWD) received a request from the City of Converse to perform a leak detection I location survey on its water distribution system. A pre-survey conference was held June 28, 1995, at the City of Converse Public Works Center to discuss the work to be performed. It was agreed that EUWD would perform sonic leak detection on all available access points and computerized leak location as needed. A final report, including any unusual system condition found and an updated master water plat would be submitted to the City at the conclusion of the survey.

John E. Gapinski of EUWD began the survey on July 5, 1995, and the survey was concluded on October 24, 1995. Over the course of the survey, EUWD surveyed a total of 4,758 access points including 3,455 customer service connections, 306 fire hydrants, 922 valves, and 75 other access points covering 46.27 miles of distribution main. Computer leak sound correlation was performed at 1 location by EUWD.

EUWD surveyors detected 47 utility side leaks and 39 customer side leaks for a total of 86 leaks. The utility side leaks included 9 service leaks, 30 meter box leaks, 2 main valve leaks, 1 main leak, and 5 fire hydrant leaks. EUWD estimates 29,581 gallons of water per day has been saved by the repair of 39 utility side leaks as of October 24, 1995. The leaks discovered during the survey range from 13,680 gallons per day to numerous small meter box leaks.

As part of the survey, EUWD located 118 valves of various types, 66 fire hydrants, and 11 ,400 feet of main not shown on the master water plats. EUWD surveyors were unable to locate 54 valves of various types and 1 fire hydrant shown on the master water plats. An additional 37 items were discovered to need some type of repair or adjustment.

Author: McGinnis ML and Shipley JR (Edwards Underground Water District)

Description: Leak detection and location survey report Lackland Air Force Base, 1995. Note: this function was taken over by the San Antonio Water System in 2006.

Report Number: 95-09

Location: Bexar County

Summary:

On June 6, 1994, the Edwards Underground Water DIstrict (EUWD) received a request from Lackland Air Force Base (LAFB) to perform a leak detection I location survey on the main base and annex water distribution systems. A pre-survey conference was held January 19, 1995 at the base to discuss the work to be performed. It was agreed that EUWD would perform sonic leak detection on all available access points and computerized leak location as needed. A final report, including any unusual system condition found and an updated master water plat would be submitted to LAFB at the conclusion of the survey. It was further agreed that LAFB would provide EUWD with one experienced utility service person and would repair all leaks detected in a timely manner.

Mark L. McGinnis of EUWD began the survey on February 27, 1995, and the survey was concluded on August 8, 1995. Over the course of the survey, EUWD surveyed a total of 2, 114 access points including 903 customer service connections, 441 fire hydrants, 720 valves, and 50 other access points covering 65.34 miles of distribution main.

Mr. McGinnis detected a total of 76 leaks. This total included 34 service valve leaks, 6 main line leaks, 20 fire hydrant leaks, 11 main valve leaks, and 5 customer side leaks. As of August 8, 1995, 14 of the 76 leaks detected over the length of the survey have been repaired.

EUWD estimates I I ,291 gallons of water per day has been saved by the repairs to date. The leaks discovered during the survey range from 7,200 gallons per day to numerous small service valve leaks.

As part of the survey, EUWD located 401 valves of various types, 15 fire hydrants, 24 service connections, and 2 back flow preventors not shown on the master water plats. EUWD surveyors were unable to locate I 7 I valves of various types, 36 yard hydrants, and 13 tire hydrants shown on the master water plats. An additional 5 items were discovered to need some type of repair or adjustment. EUWD was unable to properly survey areas on 28 plats due to various reasons.

Author: Edwards Underground Water District

Description: Leak detection and location survey report for City of Lytle, 1992. Note: this function was taken over by the San Antonio Water System in 2006.

Report Number: 92-04

Location: Medina County, Atascosa County, Bexar County

Summary:

On September 5, 1991, the City of Lytle submitted a request for the Edwards Underground Water District (EUWD) to perform a leak detection/location survey on its water distribution system. On November 25, 1991, a presurvey conference was held at the Lytle City Hall 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 all system deficiencies found, and submit to the City an updated master water plat with the final report.

The survey began December 2, 1991, and was concluded on January 31, 1992. Over the course of the survey, EUWD surveyed a tot a 1 of 1,274 access points, including 973 customer service connections, 94 fire hydrants, 197 main valves, and 10 blow-off valves covering 29.40 miles of distribution main.

EUWD detected a total of 31 leaks. This total included 1 valve leak, 2 meter box leaks, 5 fire hydrant leaks, 6 service line leaks, 1 main line leak, and 16 customer side leaks. EUWD estimates 9,128 gallons per day has been saved by the repair of 10 detected leaks as of January 31, 1992. The leaks repaired to date range from 7,200 gallons per day to 3 gallons per day.

As part of the survey, EUWD located 144 buried main line valves with a ferromagnetic detector. EUWD noted 56 water meters that were not registering accurately and an additional 58 meter boxes that need cleaning.

Author: JE Gapinski and JR Shipley (Edwards Aquifer Authority)

Description: Leak detection and location survey report for City of Marion, TX, May 1-31, 1996. Note: this function was taken over by the San Antonio Water System in 2006.

Location: City of Marion, TX

Summary:

On March 15, 1996, the Edwards Aquifer Authority (EAA), formerly the Edwards Underground Water District, received a request from the City of Marion to perform a leak detection I location survey on its water distribution system. A pre-survey conference was held April 4, 1996 at the City of Marion to discuss the work to be performed. It was agreed that EAA wou ld perform sonic leak detection on all available access points and computerized leak location as needed. A final report, including any unusual system condition found and an updated master water plat would be submitted to the City of Marion by EAA at the conclusion of the survey.

John E. Gapinski of EAA began the survey on May 1, 1996, and the survey was concluded on May 31, 1996. Over the course of the survey, a total of 817 access points were surveyed including 615 customer service connections, 34 fire hydrants, 158 valves, and 10 other access points covering 25.42 miles of distribution and transmission main.

Fourteen utility side leaks and eleven customer side leaks were detected for a total of 25 leaks. The utility side leaks included 4 service leaks, 7 meter box leaks, 1 fire hydrant leak, and 2 main leaks. An estimated 14,697 gallons of water per day has been saved by the repair of 14 utility side leaks as of June 15, 1996. The leaks discovered during the survey range from 3,960 gallons per day to small meter box leaks.

Author: Gapinski JE and Shipley JR (Edwards Aquifer Authority)

Description: Leak detection and location survey report for Fairco Water Company, 1996. Note: this function was taken over by the San Antonio Water System in 2006.

Location: Bexar County

Summary:

On November 20, 1995, the Edwards Aquifer Authority (EAA) received a request fromthe Fairco Water Company to perform a leak detection I location survey on its waterdistribution system. A pre-survey conference was held November 15, 1995, at the FaircoWater Company Office to discuss the work to be performed. It was agreed that EAA would perform sonic leak detection on all available access points and computerized leak location as needed. A final report, including any unusual system condition found and an updated master water plat would be submitted to the Company at the conclusion of the survey.

John E. Gapinski of EAA began the survey on December 13, 1995. The survey was concluded on March 8, 1996. Over the course of the survey, EAA surveyed a total of 3,320 access points including 1,697 customer service connections, 973 service valves, 82 fire hydrants, 529 main valves, and 39 other access points covering 47.58 miles of distribution main.

EAA surveyors detected 20 utility side leaks and 12 customer side leaks for a total of 32 leaks. The utility side leaks included 10 service leaks, 4 meter box leaks, 4 main leak, and 2 fire hydrant leaks. EAA estimates 98, 148 gallons of water per day has been saved by the repair of 20 utility side leaks as of April 18, 1996. The leaks discovered during the survey range from 71,280 gallons per day to small meter box leaks.

As part of the survey, EAA located 1,010 valves of various types, 4 fire hydrants, and 2,750 feet of main not shown on the master water plats. EAA surveyors were unable to locate 147 valves of various types and 1 fire hydrant shown on the master water plats. An additional 13 items were discovered to need cleaning, repair, or replacement.

Author: Edwards Underground Water District

Description: Leak detection and location survey report for City of Schertz, 1993. Note: this function was taken over by the San Antonio Water System in 2006.

Report Number: 93-02

Location: Guadalupe County, Bexar County, Comal County

Summary:

On December 23, 1991, the Edwards Underground Water District (EUWD) received a completed application form from the City of Schertz requesting a leak detection/location survey on its water distribution system. A pre-survey conference was held December 18, 1992 at the City of Schertz Water and Wastewater Service Center 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 the utility an updated master water plat with the final report.

John E. Gapinski of EUWD began the survey on January 11, 1993, and the survey was concluded on April 2, 1993. Over the course of the survey, EUWD surveyed a total of 5,782 access points· including 4,163 customer service connections, 432 fire hydrants, 1,096 main line valves, and 91 other access points covering 99.99 miles of distribution mains. Computer leak sound correlation was performed on 7 locations.

EUWD technicians detected a total of 169 leaks. This total included 35 meter box leaks, 15 fire hydrant leaks, 8 valve leaks, 5 main leaks, 3 service leaks, and 103 customer side leaks. EUWD estimates 21,703 gallons of water per day has been saved by the repair of 46 detected leaks as of May 10, 1993. The leaks discovered during the survey range from 15,840 gallons per day to numerous small meter box leaks.

As part of the survey, EUWD located 452 main line valves, 171 fire hydrants, and 36.1 miles of distribution main not shown on the master water plats. EUWD staff were unable to locate 9 fire hydrants and 49 main line valves. An additional 39 valve stacks need cleaning and/or repair and 4 valve lids were discovered missing.

Author: JR Shipley (Edwards Aquifer Authority)

Description: Leak detection and location survey report for Southwest Texas State University, April 22, 1996-July 26, 1996. Note: this function was taken over by the San Antonio Water System in 2006.

Location: Southwest Texas State University, San Marcos, TX

Summary:

On April 19, 1996, the Edwards Aquifer Authority (EAA) received a request from Southwest Texas State University (SWT) to perform a leak detection I location survey on its water distribution system. A pre-survey conference was held April 22, 1996, at the Southwest Texas Physical Plant to discuss the work to be performed. It was agreed that EAA would perform sonic leak detection on all available access points and computerized leak location as needed. A final report, including any unusual system condition found, and an updated master water plat would be submitted to the SWT at the conclusion of the survey.

James R. Shipley of EAA began the survey on April 22, 1996. The survey was concluded on July 26, 1996. Over the course of the survey, EAA surveyed a total of 468 access points including 102 service connections, 21 fire hydrants, 183 valves, and 162 other access points covering 10.17 miles of distribution main.

Mr. Shipley detected a total of 52 leaks. These leaks included 11 service leaks, 10 hose bib leaks, 11 main leaks, 10 valve leaks, 3 toilet leaks, 4 sprinkler system leaks, 2 miscellaneous leaks and 1 fire hydrant leak. EAA estimates 76,217 gallons of water per day has been lost from these leaks. The leaks discovered during the survey range from 25,920 gallons per day to small hose bib leaks.

As part of the survey, EAA located 78 valves of various types, 6 back flow preventors, 1 fire hydrant, and 7 meters not shown on the master water plats. EAA surveyors were unable to locate 13 valves of various types shown on the master water plats. An additional 6 items were discovered to need some type of repair or adjustment.

Author: Edwards Underground Water District Division of Planning and Environmental Management Leak Detection Program

Description: Leak detection and location survey report for Southwest Texas State University, June 14-18, 1993. Note: this function was taken over by the San Antonio Water System in 2006.

Report Number: 93-04

Location: Southwest Texas State University, San Marcos, TX

Summary:

On June 3, 1993, the Edwards Underground Water District (EUWD) received a completed application form from Southwest Texas State University requesting a leak detection/location survey on its water distribution system. A pre-survey conference was held June 11, 1993 at the University Physical Plant 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 the University a revised master water plat with the final report.

John E. Gapinski of EUWD began the survey on June 14, 1993, and the survey was concluded on June 18, 1993. over the course of the survey, EUWD surveyed a total of 185 access points including 147 valves, 17 fire hydrants, 9 service connections, and 12 other access points covering 8.05 miles of distribution mains. Computer leak sound correlation was performed on 4 locations.

EUWD technicians detected a total of 8 leaks. This total included 4 main line leaks, 2 fire hydrant leaks, 1 meter box leak, and 1 valve leak. EUWD estimates 298,080 gallons of water per day has been saved by the repair of 3 detected leaks as of June 18, 1993. The leaks discovered during the survey range from 126,720 gallons per day to a small meter box leak.

As part of the survey, EUWD noted 12 main valves and 1 fire hydrant that could not be located. Additionally, two valve stacks need repair and two are missing lids.

Author: JE Gapinski and JR Shipley (Edwards Aquifer Authority)

Description: Leak detection and location survey report for City of Garden Ridge, March 1, 1996-April 30, 1996. Note: this function was taken over by the San Antonio Water System in 2006.

Location: City of Garden Ridge, Comal County, TX

Summary:

On December 21, 1995, the Edwards Aquifer Authority (EAA) received a request from the City of Garden Ridge to perform a leak detection I location survey on its water distribution system. A pre-survey conference was held February 21, 1996, at the City of Garden Ridge City Hall to discuss the work to be performed. It was agreed that EAA would perform sonic leak detection on all available access points and computerized leak location as needed. A final report, including any unusual system condition found and an updated master water plat would be submitted to the City at the conclusion of the survey.

John E. Gapinski of EAA began the survey on March 1, 1996. The survey was concluded on April 30, 1996. Over the course of the survey, EAA surveyed a total of 914 access points including 696 customer service connections, 71 fire hydrants, 136 valves, and 11 other access points covering 19.09 miles of distribution main.

Mr. Gapinski detected 15 utility side leaks and 11 customer side leaks for a total of 26 leaks. The utility side leaks included 10 service leaks, 2 meter box leaks, 2 main leaks, and 1 fire hydrant leak. EAA estimates 69,016 gallons of water per day has been saved by the repair of 15 utility side leaks as of May 21, 1996. The leaks discovered during the survey range from 28,368 gallons per day to small meter box leaks.

As part of the survey, EAA located 47 valves of various types, 200 services, 11 fire hydrants, and 11, 150 feet of main not shown on the master water plats. EAA surveyors were unable to locate 20 valves of various types shown on the master water plats. An additional 2 items were discovered to need some type of repair or adjustment.

Author: ML McGinnis, JR Shipley (Edwards Underground Water District)

Description: Leak detection and location survey report for East Medina County Water Supply Corporation, August 10, 1995-October 10, 1995. Note: this function was taken over by the San Antonio Water System in 2006.

Report Number: 95-10

Location: East Medina County, TX

Summary:

On February I 7, 1995, the Edwards Underground Water District (EUWD) received a request from the East Medina County Water Supply Corporation (EMCWSC) to perform a leak detection/ location survey on its water distribution system. A pre-survey conference was held at the EMCWSC office to discuss the work to be performed. It was agreed that EUWD would perform sonic leak detection on all available access points and computerized leak location as needed. A final report, including any unusual system condition found and an updated master water plat would be submitted to East Medina County Water Supply Corporation, by EUWD at the conclusion of the survey.

Mark L McGinnis of EUWD began the survey on August 10, 1995 , and the survey was terminated on October I 0, 1995. Over the course of the survey, a total of 287 access points were surveyed including 219 customer service connections, 240 valves, and 34 other access points covering 12.74 miles of distribution main.

Ten utility side leaks and 28 customer side leaks were detected for a total of 38 leaks. The utility side leaks included 2 meter box leaks, 7 main leaks, and I service leak. An estimated 1,730 gallons of water per day has been saved by the repair of the 10 utility side leaks. The leaks discovered during the survey range from 720 gallons per day to small meter box leaks.

As part of the survey, 6 services and 17 valves of various types were located that were not shown on the master water plats. EUWD surveyors were unable to survey 13 valves and 3 services shown on the master water plats.

Author: JE Gapinski and JR Shipley (Edwards Underground Water District)

Description: Leak detection and location survey report for City of Kyle, TX from May 16, 1995-June 5, 1995. Note: this function was taken over by the San Antonio Water System in 2006.

Report Number: 95-08

Location: City of Kyle, TX

Summary:

On May 9, 1995, the Edwards Underground Water District (EUWD) received a request from the City of Kyle to perform a leak detection/location survey on its water distribution system. A pre-survey conference was held May 12, 1995, at the City of Kyle to discuss the work to be performed. It was agreed that EUWD would perform sonic leak detection on all available access points and computerized leak location as needed. A final report, including any unusual system condition found and an updated master water plat would be submitted to the City of Kyle by EUWD at the conclusion of the survey.

John E. Gapinski of EUWD began the survey on May 16, 1995, and the survey was concluded on June 5, 1995. Over the course of the survey, a total of 1,464 access points were surveyed including 1,023 customer service connections, 106 fire hydrants, 328 valves, and 7 other access points covering 29.70 miles of distribution main.

Thirteen utility side leaks and 3 customer side leaks were detected for a total of 16 leaks. The utility side leaks included 2 service leaks, 8 meter box leaks, and 3 main leaks. An estimated 260,734 gallons of water per day has been saved by the repair of the 13 utility side leaks.

The leaks discovered during the survey range from 254,592 gallons per day to small meter box leaks.

Author: L Wagner, C Ahrens - Edwards Underground Water District

Description: An abbreviated version of the more comprehensive Water Conservation Working Handbook. Used by Water Conservation Task Force Committees throughout the Edwards Underground Water District, the complete Working Handbook promotes the development and use of new technologies and practices that improve water use efficiency. Note: This document is included for historical value but may have been superseded by more recent reports.

Location: Edwards Aquifer Balcones Fault Zone San Antonio Segment

Summary:

An abbreviated version of the more comprehensive Water Conservation Working Handbook. Used by Water Conservation Task Force Committees throughout the Edwards Underground Water District, the complete Working Handbook promotes the development and use of new technologies and practices that improve water use efficiency. Note: This document is included for historical value but may have been superseded by more recent reports.