This the TGR District Precincts Page with a map of the five precincts where representatives are elected. TGR Monitor Wells Interactive Map Ralph Fair Rd. Fair Oaks Ranch Boerne Stage Rd. Blanco Rd. #1 Blanco Rd. #2 La Escondida Shadow Canyon

Looking for water data? You've come to the right place. You can find water well locations and data at this page. Water Well Drilling A wide variety of subjects cover water well health and maintenance. Please find the link below for a range of subjects that may pertain to you such as how to disinfect your well, winterization of your well, maintaining your septic system, and others. Texas Well Owner Network Fact Sheets (multiple subjects) Do you need work done on your well or need a licensed water pump installer or driller? For a complete list of licensed well drillers, please visit the Texas Department of Licensing and Regulation website. Please feel free to contact the District for more information.

Looking for water data? You've come to the right place. You can find water well locations and data at this page. Water Quality Testing Because no federal, state, or local entity ensures the safety of private well water, the responsibility for monitoring it falls to the well owner. The District recommends annual sampling of the well with a local lab to monitor the quality of your water. Baseline water quality results are important to have on record in the event a water quality event occurs. If you feel that your water has a quality issue and you are on a municipal supply, please contact your purveyor (e.g. City of Fair Oaks Ranch, Grey Forest Utilities, Southwest Water Co., Aqua Texas, SAWS, etc.). The photo below is from the Guadalupe-Blanco River Authority lab. To test your well water, contact a certified water testing lab for instructions and a test kit. To find a lab, visit the link below for an easy to use map of TCEQ certified labs: Texas Drinking Water Public Labs Map Regional Labs Guadalupe-Blanco River Authority City of San Antonio Metro Health – (210)207-8887 (basic bacteriological testing only) Pollution Control Services – (210)340-0343 Eurofins San Antonio Testing Laboratory – (210)229-9920 T.C.E.Q. List of Accredited Laboratories Further Reading Texas A& M Agrilife Extension: "Drinking Water Standards" Texas Cooperative Extension: "Drinking Water Problems: Iron and Manganese" Texas A&M Agrilife Extension: "What to do About Coliform Bacteria in Well Water" National Ground Water Association: "PFAs and Private Well Owners"

Learn about the latest activities of the Trinity Glen Rose District board of directors. TGR UPCOMING MEETINGS TGR Board Meetings Regular Board Meeting Date: September 17 , 2026, 10:00 am Location: Helotes City Hall Council Chambers, 12951 Bandera Rd., Helotes, TX 78023 Current Board Meeting Agenda Board Meeting Archives Fy 26-27 Proposed Budget TGR Board Log In Member Resources

The Trinity Glen Rose Groundwater Conservation District conserves and protects the Trinity Aquifer in Northern Bexar County, Texas. Fy 26-27 Proposed Budget If you need to meet with TGR District staff, please call to make an appointment so you can connect with the appropriate staff person. TGR Mission The TGR was created in 2001 to conserve, preserve, and protect the Trinity Aquifer within the District. CONSERVE - PROTECT - PRESERVE Drought Dashboard South Texas Drought Conditions With the severity of the current drought condition continuing into 2026, the TGR District will be providing up to date information about these conditions are affecting our local aquifers and how you can help. The map to the right is published each week by the U.S. Drought Monitor. As you can see, Bexar County is now mostly in D1-Moderate Drought after having been in D3-Extreme Drought over the last couple of years. The rainfall chart from the National Weather Service shows that rainfall for the San Antonio area is running slightly above average for this time of year. While the heavy rainfall amounts over the July 4th weekend have helped the Bexar County area significantly, the Trinity Glen Rose District is still in Stage 3 of its Drought Management Plan. Local Rainfall Amounts - August Bexar County Map Date: Thursday, August 20 , 2026 None D0 (Abnormally Dry) D1 (Moderate Drought) D2 (Severe Drought) D3 (Extreme Drought) D4 (Exceptional Drought) Click the state map to view Texas Drought Monitor page. Click the chart to view the National Weather Service rainfall report. Drought in the News Texas Water Development Board Weather Report Drought.gov - Online info from National Integrated Drought information System Express-News - April-08-25 - Great overview of current drought Texas Water Newsroom - TWDB Texas Tribune on Water Supply How You Can Help - Click Here QUICK LINKS Board Meeting Info GMA-9 Meeting Information Current Newsletter Seller's Disclosure About Groundwater and Surface Water Rights TGR STATISTICS 302,274 POPULATION 8,689 (Acre Feet) 2025 PRODUCTION 5 DISTRICT PRECINCTS 2 (Drought Stage 2 ) DROUGHT STAGE Conserving Water for Future Generations

Learn about the latest activities of the Trinity Glen Rose District board of directors. TGR DISTRICT BOARD OF DIRECTORS TGR Meeting Information The board meeting agenda and other info can be found on the Board Meeting page here . Trinity Glen Rose District Precinct Map Use the map to determine which precinct you live in Dr. Stuart Birnbaum Precinct 1 Joe duMenil Precinct 2 Steven Peterson Precinct 3 Joe Silman Precinct 4 David Timmermann Precinct 5 Use the map to locate your District when using Google Chrome, Mozilla Firefox, and Microsoft Edge. For Safari users, click here to determine the District in which you reside. Trinity Glen Rose District Board Members Dr. Stuart Birnbaum Precinct 1 Vice-Chair Joe duMenil Precinct 2 Chairman Steven Peterson Precinct 3 Secretary Joe Silman Precinct 4 Treasurer David Timmermann Precinct 5 Asst. Sec./Treasurer Dr. Stuart Birnbaum - Precinct 1 (Vice-Chair) - Term expires 05/2028 Dr. Stuart Birnbaum is an elected representative and was appointed to the TGR Board in December 2020. Birnbaum is an emeritus associate professor in the department of geological sciences at the University of Texas at San Antonio where he conducted research in sedimentology and microbial geochemistry. He earned his B.S. degree in geology from the State University of New York at Stony Brook and his Ph.D. in geology from Cambridge University in the UK. Since retiring Birnbaum has been actively engaged with Citizens’ Climate Lobby serving as a co-leader of the San Antonio chapter of CCL. He is also a Board member of the Scenic Loop – Helotes Creek Alliance, a local environmental organization, and is an En-ROADS ambassador with Climate Interactive. Precinct 1 boundaries cover the area near the City of Helotes. See the map above. Joe duMenil - Precinct 2 (Board Chairman) - Term expires 05/2028 Joe duMenil is an elected representative and currently serves as the Board Chairman. He has served the District since April 2011. Mr. duMenil has over 45 years of experience in the development and management of public infrastructure. He gained his experience by serving 20 years in the U.S. Army Corps of Engineers and over 25 years in both public and private sectors. He currently is assisting Doucet, a Kleinfelder Company in their business development pursuits in Central Texas. He holds a B.S. degree in Construction Science and a M.S. degree in Construction Management from Texas A&M University. Mr. duMenil has been a Certified Floodplain Manager since 2002 and is actively involved in several professional organizations such as Texas Floodplain Management Association, Society of American Military Engineers, Texas Public Works Association, Construction Management Association of America and American Council of Engineering Companies. Precinct 2 encompasses the largest geographic area in District with the western boundaries being Highway 16 in the Helotes area, Camp Bullis on the east, Loop 1604 in the south and the Bexar County line to the north. This Precinct also extends into Kendall and Comal Counties within the City Limits of Fair Oaks Ranch. Also included in the Precinct 2 boundaries are the City of Grey Forest, a portion of the City of Helotes, numerous residential and commercial communities and the environmentally protected Government Canyon Nature Park. Steven Peterson - Precinct 3 (Secretary) - Precinct 3 term expires 05/2030 Steven Peterson is a native San Antonian residing in Kinder Ranch. He is a graduate of Texas A&M and served in the San Antonio Police Department for 34 years. He has also served 7 years as a City of San Antonio District 10 Director of Neighborhood Engagement and Military Affairs. Now happily retired. He serves on this board as well as the board of the Master Leadership of S.A. Alumni Association. Camp Bullis and Camp Stanley cover most of the western portion of Precinct 3. The southern boundary runs up against the Stone Oak area and the Cibolo Creek forms most of the northern boundary. Eisenhauer Park is a highly used urban park in Precinct 3, and Panther Springs Creek Nature Area is a family friendly park residing in the district. A unique aspect of Precinct 3 is that three creeks, Leon, Salado, Panther Springs, run through the area. These tributaries are often included in water quality discussions due to their potential recharge to the aquifers which underlie them. Joe Silman - Precinct 4 (Treasurer) - Term expires 05/2030 Joe Silman is a retired partner with Andersen Consulting (now Accenture) and he focused his business consulting with water, electric and gas utilities. In addition to serving on the TGRGCD board, Mr. Silman also is President of the Stone Oak POA Board of Directors. Mr. Silman knows that with many homes and large water using businesses in the area, water conservation must be a high priority for all who receive their water from either San Antonio Water System Edwards Aquifer or Trinity Glen Rose wells. In the coming months, the TGRGCD will be enhancing its conservation messaging to encourage the focused stewardship of the area's water resources. Precinct 4 is the most densely populated in the TGRGCD. It includes the growing Stone Oak area with its 27 subdivisions, plus robust business and medical developments. Additionally, the Club at Sonterra and Martin Marietta Hwy 281 quarry are located within Precinct 4. The southern boundary of Precinct 4 is Loop 1604, Wilderness Oak on the north, NW Military Highway to the west and Highway 281 on the east. David Timmermann - Precinct 5 (Asst. Sec./Treasurer) - Term expires 05/2030 David Timmermannn was elected to the roll of Director of Precinct 5 on May 2, 2025. He is a native Texan with over 40 years of experience as a civil engineer, delivering large scale water supply and water treatment projects across Texas. He currently serves as the manager of the Quality Assurance/Quality Control for Provenance Engineering. Mr. Timmermann is passionate about developing and using tools and models to understand our aquifer system, finding a balance with aquifer stressors, and educating the public about this precious natural groundwater resource for future generations. Precinct 5 is located on the eastern reach of the District. It is the second largest precinct in geographic size and has a highly faulted underground structure. The PGA Village Golf Course and Marriott Resort are two of the more recognizable destinations in Precinct 5. The Vulcan Quarry mines limestone in northern Bexar County and is subject to various environmental regulations due to its proximity to recharge features and aquifer water.

Take advantage of the Trinity Glen Rose District's conservation program incentives. DROUGHT INFORMATION TGR Drought and Conservation Management Plan Managing Drought PDF Trinity Glen Rose District Moves to STAGE 2 Drought Restrictions Published June 25, 2026 After considering rising levels in the Trinity Aquifer monitoring wells due to significant rainfall over the past several months, the Trinity Glen Rose Groundwater Conservation District (TGR) will be moving from Drought Stage 3 to Stage 2 of its drought management plan. “The District is pleased to report that with more rain in the long-term forecast and the recent downpours replenishing the District’s monitoring wells, we’ve decided to go to Stage 2 of our drought plan which is a reduction from the highest level drought Stage 3 which we’ve been in since November 1, 2024,” said TGR General Manager Amanda Maloukis. “There is still more room for wells to recover, so we are going to be a bit cautious in our drought approach over the next several months. We just published an article about a “Super El Niño” possibly bringing a strong rainy season later in 2026 to Texas. While we all hope that this much needed rain continues throughout the rest of the year, we haven’t reached a point of saying this current five-to-six year drought is over.” From a water conservation standpoint, the District is urging home and business owners to take maximum advantage of the recent precipitation by keeping automatic sprinkler systems off and only hand watering where necessary. The soil is still fairly saturated with water and plants know how to access that water, so there is no need to waste water by putting more on landscapes now. You can read more about the TGR District Drought Plan at: www.TrinityGlenRose.com/drought . STAGE 2 Drought Measures (Includes all measures of STAGE 1 and Year-Round Conservation) 1. Water use reduction goal of 10%. 2. Watering with a hand-held hose may occur any time and any day. 3. Watering with a spray irrigation system, sprinkler, or soaker hose is allowed to only once a week, from 5-10 a.m. and 9 p.m.-12 a.m. on your designated watering day as determined by your address in Stage 1. 4. Watering with drip irrigation may run up to two days a week on Monday and Friday, before 10 a.m. or after 9 p.m. Year-round Conservation Measures This stage is what most people would consider normal seasonal climate conditions for the area. Year-round watering rules are in effect when no drought conditions are active. The District strongly encourages homeowners, home owner associations, homebuilders and/or developers, exempt or non-exempt well users to incorporate these conservation practices. Specifically, the incorporation of the following best management practices: 1. Rain Sensors - rain sensors should be installed and maintained on all irrigation systems equipped with automatic irrigation controls and inspected annually. 2. Xeriscape Option - Homebuilders and/or developers subdividing lots and/or constructing new single family residential homes should offer a xeriscape option in any series of landscaping options offered to prospective home buyers. 3. Rainwater Harvesting Systems - Homebuilders, developers, Homeowner Associations, and homeowners should consider the installation of rain harvesting systems. Rain harvesting systems can reduce reliance on common water supplies with a low-cost investment. 4. Improve the quality of home irrigation systems - Homeowners, Homeowner Associations, homebuilders, and developers should consider installing or replacing irrigation systems with an efficient system. This can lessen the strain on groundwater resources. This article was published November 1, 2024 TGR District Moves to Drought Stage 3 With water well levels already near historic lows and fall rainfall deficits at around five inches, the Trinity Glen Rose Groundwater Conservation District (TGR) declared STAGE 3 water restrictions in compliance with the District’s Drought Contingency Plan effective as of Friday, November 1. “We are seeing very negative trends in our Trinity Aquifer monitoring water well levels continue. Additionally, we’re seeing that same type of problem with the Edwards Aquifer,” said TGR General Manager Amanda Maloukis. “So as the Edwards Aquifer Authority is considering for the first time ever declaring Stage 5 of their drought plan, we know that it is critical for us to declare Stage 3 of our drought plan. These two drought stages are the highest levels of required conservation measures and they’re being invoked due to our persistent drought which has prevented water wells from replenishing to get us back to somewhat normal water levels.” Since September 1, San Antonio has recorded a little less than 1.5 inches of rain. That’s 5 inches below average for the first eight weeks of fall. This is also the driest start to fall since 2008 which was also one of the area’s toughest droughts. As of now, it has been two months since any rain has fallen in San Antonio. Given those very dry conditions, the current US Drought Monitor lists the majority of Bexar County as being in (D3)-Extreme Drought . “How can people help our aquifers? First of all, the growing season has stopped, so there should absolutely be no lawn watering happening,” Maloukis stated in her call to action. “Even though our Stage 3 irrigation measures limit watering to once every other two weeks, that restriction is really written for summer months when landscapes do need a little water to stay alive. So, please, turn off all sprinkler systems and hand water only where and when necessary. Then, we would ask families to talk about conserving water. We can save a lot of water by taking short showers, washing only full loads of clothes and dishes and never just letting a faucet run. You must have an active purpose for using water to turn the faucet on.” Maloukis concluded by reminding people that droughts are a part of living in South Texas. And, at some point, those droughts end with plentiful rainfall. But, until that much needed precipitation returns, it is up to every family and business operation to take these water conserving measures seriously. The conservation measures outlined and strongly encouraged under TGR’s Stage 3 drought plan include all conservation measures from Stage’s 1 and 2 unless replaced by Stage 3: Watering with an irrigation system, sprinkler, or soaker hose is allowed once every other week, from 5- 10 a.m. and 9-12 p.m. on your designated watering day as determined by your address. Watering with drip irrigation may run one day a week, on Friday, from 5-10 a.m. or 9-12 p.m. Watering with a hand-held hose may occur any time and any day. Water use reduction goal of 15%. Installing newly planted landscapes is highly discouraged. Aesthetic fountains should not be utilized unless an alternative source of water other than groundwater. Do not wash parking lots, driveways or sidewalks unless health and safety is a risk. The use of a commercial car wash facility that recycles water is allowed any day. Alternate sources of water are highly encouraged such as rain water harvesting, reclaimed condensate, reclaimed grey water, recycled water, and other non-groundwater sources. Below is a chart outlining the day of the week your household is allowed to water, which is every other week during Stage 3 drought restrictions. But, as mentioned, with the landscape growing season over for 2024, there should not be any lawn watering with sprinkler systems occurring now. You can download a complete copy of TGR’s Drought Stage Plan and the District’s latest drought brochure “Managing Drought” at our website. www.trinityglenrose.com/drought-information . The TGR Conservation page has additional ways each household can help save water during these very dry weather conditions. You can find those tips at the link . Drought and Weather Resources TWDB Drought Monitor/Drought Resources Page TWDB Precipitation Stations/TEXMESONET Map Palmer Drought Severity Index Map Texas Drought Monitor Map Historical Palmer Drought Indices NOAA Precipitation Estimates Map NOAA Soil Moisture Map Texas Burn Bans Map TCEQ List of PWS's Limiting Water Use to Avoid Shortages TWDB Flood Viewer TWDB Drought Monitor Map Click on the image below for most up-to-date information. Drought map on 10-31-2024

Looking for water data? You've come to the right place. You can find water well locations and data at this page. Water Wells General Maintenance Info Regular maintenance of your groundwater well can prolong its life and protect your health and safety. The Texas Well Owners Network and other various organizations provide useful documents and criteria to evaluate the health of your well. The most requested publications for groundwater well health and maintenance can be found on the Texas Well Owner Network website. Topics include water well basics, disinfecting wells, drinking water quality, abandoned wells, protecting your well during drought, and many more. Maintenance Links Texas Well Owner Network CDC Well Maintenance Water Well Maintenance Guides Download the NGWA Well Owners Guide Complete Guide to Water Well Ownership in Texas Website

Looking for water data? You've come to the right place. You can find water well locations and data at this page. WATER WELL INFORMATION Water Quality Testing of Your Well Safe drinking water for you family and friends relies on frequent testing Because no federal, state, or local entity ensures the safety of private well water, the responsibility for monitoring it falls to the well owner. The District recommends annual sampling of the well with a local lab to monitor the quality of your water. Baseline water quality results are important to have on record in the event a water quality event occurs. Water Quality Testing Basics You will need to find out the quality of the water in your aquifer. Some information about the aquifer water may be readily available from public utilities and water companies. They are required by federal and state law to report water chemistry to consumers. (TGR link for Trinity Aquifer water quality.) Contact the water utility for a copy of the water quality report for information about local water quality issues. However, water quality information on exempt household wells is not recorded or made available through any public agency unless the well owner has given permission. Have your water tested whenever: You suspect it may be contaminated. If you notice a change in color, taste, or odor of the water. The pump or well has undergone maintenance recently. People who drink the water have experienced a change in health, especially stomach-related illnesses. The well water is cloudy or smelly, or tastes bad, it probably does not conform to drinking water quality standards. If you live near oil and gas fields, you should have the water screened for non-refined hydrocarbons in addition to annual testing for coliform bacteria, nitrate, and total dissolved solids. Maintain Water Quality Testing Records To protect your water supply, you need to keep records on each well, manage potential sources of contamination, and test your water at least once a year. Record the location of all wells on your property, and keep a file on each well. Each well will have a unique identification number assigned by the driller. Use this number to track historical information, which may be available from the following sources: Texas Water Development Board Groundwater Database: Licensed water well drillers must submit reports to the state for each well they drill. More than 130,000 wells have been recorded in the TWDB groundwater database since 2001. For more recently drilled wells, your state well report may be found here: TWDB Water Data Interactive Map Texas Commission on Environmental Quality Water Well Report Viewer : For historic well records, TCEQ Water Well Viewer For assistance, call 512-239-4600 or email gpat@tceq.texas.gov Texas Alliance for Groundwater Districts: http://www.texasgroundwater.org/ Your groundwater may be managed and protected locally through a groundwater conservation district. Groundwater districts are governed under chapters 35 and 36 of the Texas Water Code. Texas Water Development Board: TWDB Groundwater Conservation Districts webpage How to Contact a Certified Water Testing Lab Following well disinfection, water should be sampled and tested. Contact a certified water testing lab for instructions and a test kit. To find a lab, visit the link below for an easy to use map of TCEQ certified labs: Texas Drinking Water Public Labs Further Reading Texas A& M Agrilife Extension: "Drinking Water Standards " Texas Cooperative Extension: "Drinking Water Problems: Iron and Manganese " Texas A&M Agrilife Extension: "What to do About Coliform Bacteria in Well Water " National Ground Water Association: "PFAs and Private Well Owners"

This the TGR District Precincts Page with a map of the five precincts where representatives are elected. Trinity Glen Rose District Well Mapping This new public mapping system is part of the Trinity Glen Rose District's new database capabilities. Just click anywhere on the map below to go to the interactive map. State Water Well Database Interactive water map maintained by the Texas Water Development Board . The map of Texas is what you will see by clicking on the link below. You can then zoom in to San Antonio (see map inset) to find wells in our area. Please see additional instructions below. Click this link to go to the Texas Water Development Board’s interactive water well map. Type in the address you are searching for in the upper left corner. You will then see the location you typed in on the map and the nearby wells represented by dots. Note the default purple dots include historic and public water system wells. To see more recent wells, click the Groundwater drop down menu (upper left) and select "Water Wells". These will appear as orange dots. Click on any of the dots and you will see all of the information the State of Texas has about that well. Feel free to explore this interactive map. There are many other resources under the various tabs on this site.

Looking for water data? You've come to the right place. You can find water well locations and data at this page. LANDOWNER OPPORTUNITIES Hill Country Alliance Sponsors Field Day to Teach Soil Erosion Prevention Best Practices - March 28, 2026 The Hill Country Alliance (HCA) is sponsoring the Hillside Stewardship Workshop on Saturday, March 28th for Hill Country landowners interested in reducing erosion, enhancing groundwater infiltration, and boosting plant productivity. The group will be hosted at Pure Pastures Ranch in Canyon Lake, TX for this hands-on field day. The soil preservation information will be presented by Dr. Mollie Walton, a restoration ecologist with more than 30 years of experience helping landowners restore land productivity. Participants will learn how to read the landscape in order to determine where and how to build erosion control structures featured in HCA's Hillside Stewardship Guide. These low-tech strategies for slowing and sinking water have rippling benefits for soil moisture, drought resilience, and habitat enhancement. Space is limited, so make sure to sign up soon. To learn more and register, click this link: Register Here. If you have any questions, please feel free to reach out to Lauro: lauro@hillcountryalliance.org . Camp Bullis Sentinel Landscape Regional Conservation Partnership Program Learn about Land Management Priorities The priorities of this project involve addressing ecological resource concerns that will benefit both the mission of Joint Base San Antonio-Camp Bullis and the land stewards and residents in the project area. Land Management Resource Concerns The ecological concerns and priorities in the project area are water quality and conservation, plant health and restoration of our native plant communities, soil quality, and improving habitat for grazing and wildlife. Land Management Practices To address these resource concerns, eligible practices are selected as the tools and processes to get conservation on the ground. Eligible land management practices will focus on water quality and riparian health including planting and protecting vegetative buffers around waterways. Waterways that are named and flowing into Camp Bullis will have a higher priority for funding. Other practices will be used to improve and restore upland communities. These practices will include prescribed grazing, selective brush management, and native plant restoration for wildlife and pollinator species. Practices will be also used to improve soil health. Our project specialists will meet with you and design a conservation plan that will specifically meet your needs and the needs of the land. Funding will be attached to these conservation plans to aid in implementation. Read more by clicking on this link. Camp Bullis Sentinel Landscape Partnership web page Program Partners * More than 50+ partners Texas A&M Natural Resources Institute Joint Base San Antonio Trinity Glen Rose Groundwater Conservation District The Cibolo Conservancy Land Trust Edwards Aquifer Authority Greater Edwards Aquifer Alliance Green Spaces Alliance Hill Country Alliance The Nature Conservancy of Texas Texas Agricultural Land Trust Camp Bullis Sentinel Landscape Area The project area is outlined in red.

This is the TGR District video page. There are sever videos about water conservation, rain barrel construction and some general information about the District. Trinity Glen Rose District Videos This is the Trinity Glen Rose District video. It gives you an overview of what we do to conserve, preserve and protect the Trinity Aquifer within our district boundaries. TGR Database Training Videos The Trinity Glen Rose District database system is very detailed and deep with various types of helpful information. To make acquiring that information a little easier, we will be producing some training videos on how the public can use the system. The first video below is an overview of how to log into and navigate the system as well as some insights into where the main menus are, how to locate a particular well in the system and then how you can find detailed information about specific wells. Building a Rain Barrell Want to build your own rain barrel? George and Emily give you the rundown on how to get it done using materials you can find at most hardware stores. Watersaving Native Plant Landscape Video Conserving water by converting high water use turf and nonnative plants to low water use native plants is a priority for the Trinity Glen Rose District. Here's one sample of a video we produced to show how great a yard can look with native plants and some great landscape design. You can watch more of these types of landscape videos at the District YouTube page .