​The Comal Trinity Groundwater Conservation District (CTGCD) was created to help Comal County residents conserve, preserve, recharge, protect, and prevent waste of groundwater from the Trinity Aquifer which underlies all of Comal County.  The Comal Trinity GCD was created during  the 2015 84th Texas Legislature with the enrollment of House Bill 2407 and became effective 17 June 2015. The bill provides the GCD the authority to issue bonds; and impose assessments, fees, or surcharges.

Announcements and Public Notices

CTGCD Regular Board meeting will be held Monday, November 15, 2021 at 5:00 p.m. at the City of Garden Ridge City Hall Council Chambers, 9400 Municipal Pkwy., Garden Ridge, Texas. The Comal Trinity Groundwater Conservation District invites the residents of Garden Ridge and others with interest in water to join the meeting. The meeting will begin at 5:00 pm with a presentation on rain water catchment systems to include a Q&A. At 5:30 all elected officials will be introduced, including the recent appointments of Connie Lock who represents Garden Ridge and Alan Brown representing Precinct 4, followed by a workshop and Q&A to discuss the groundwater district since its formation in 2015, its rules, monitoring the water level of the Trinity Aquifer at various locations near Garden Ridge, the Texas Water Development Board request for Desired Future Conditions (DFC) and the relationship and importance of the Edwards and Trinity Aquifers to Garden Ridge. The board will the hold its regular meeting at 6:00 which is also open to the public. The Board looks forward to seeing many of you and expressing our appreciation to the City of Garden Ridge for their support and input into the creation of the District.

Groundwater Management Area 9

A Joint Planning Committee Meeting of the District Representatives to GMA-9 will be held at 10:00 a.m. November 15, 2021 at the Cow Creek Groundwater Conservation District office. Agenda has been publicly posted and is available by clicking here. Location address is on the agenda.

Groundwater Management Area 10

Meeting of the District Representatives to GMA-10 is scheduled for October 26, 2021 at 11:30 a.m.  Agenda has been publicly posted and is available by clicking here. Location is on the agenda.

What rules are now in place regarding my current well or a well I am planning to drill?
The Comal Trinity GCD rules became effective  January 1, 2019.  All BORINGS into the Trinity group of aquifers in Comal county must be done in accordance with Rules discussed in public hearings and adopted by the Board.  These regulations along with adoption dates, may be found by clicking on RULES in the horizontal menu above, between District and District Forms. 
What fees are imposed by Comal Trinity GCD?

Fees for non-exempt well users were established as of December 21, 2015 and became effective January 1, 2016. Please visit Chapter 11. Fees for additional information.

Will you require a well meter?

Non-exempt wells are required to have wells metered no later than August 17, 2018. Domestic and livestock wells are not required to have meters installed.


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Surface Water Groundwater Interaction and Water Quality Of The Guadalupe River Basin And The Trinity Aquifer In Western Comal County, Texas Applied Karst Hydrogeology

Project Report December 9, 2019

To view the report Click Here

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Planning for Texas’ groundwater resources

(Texas Water Development Board May 28, 2020)