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Announcements and Public Notices

CTGCD Regular Board meeting is scheduled Monday, August 19th, 2024 at 6:00 p.m. Location: TBD. The District invites the public to attend. Please contact District Staff at 830-885-2130 with any questions. The Agenda will be available at least 72 hours prior to the meeting on the District Information/Public Notices page, or by clicking here.

Groundwater Management Area 9

Open Meeting for GMA 9 joint planning committee date is TBD. Location: Cow Creek Groundwater Conservation District office, 9 Toepperwein Rd., Boerne TX 78006 and via Zoom, details on the agenda on how to join. Agenda may be found here and on the Public Notices page at least 10 days prior to the meeting. More information about GMA 9 can be found at

Groundwater Management Area 10
Open meeting for GMA 10 joint planning committee date is September 23, 2024. It will be at the Edwards Aquifer Authority building, 900 E. Quincy, San Antonio, Texas 78215.  Click here for the agenda (available 10 days prior to scheduled meeting).
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 not capable of producing 25,000 gallons per day, 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)

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