This map features represents the geographical boundaries designated as Priority Groundwater Management Areas (PGMA) the Texas Commission on Environmental Quality( TCEQ), The dataset has been maintained by the Groundwater Planning and Assessment Program from TCEQ. The main purpose of designating a PGMA is to ensure the management of groundwater in areas of the state with critical groundwater problems. The PGMA study and evaluation will consider the need for creating groundwater conservation districts and different options for management of groundwater issues.

Confirmed districts are arranged in alphabetical order. Dates indicate when district was established by law or election. * Districts that have, in whole or part, authority as assigned by Chapter 36 of the Texas Water Code. Please refer questions pertaining to individual districts to the district themselves. (www.twdb.texas.gov/groundwater/conservation_districts/index.asp) ** The subsidence districts and the Edwards Aquifer Authority are not groundwater conservation districts as defined under Chapter 36 of the Texas Water Code, but have the ability to regulate groundwater production (Senate Bill 1537 from the 79th Legislative Session and House Bill 2729 from the 86th Legislative Session). Groundwater Conservation District GIS Data created by the Texas Commission on Environmental Quality. For more information, please contact TCEQ at 512-239-1000 or wras@tceq.texas.gov. DISCLAIMER: This map was generated by the Texas Water Development Board using GIS (Geographical Information System) software. No claims are made to the accuracy or completeness of the information shown herein nor to its suitability for a particular use. The scale and location of all mapped data are approximate. Map date: NOV-2019

Texas groundwater conservation districts (GCD) are units of local government authorized and ratified at the local level to manage and protect groundwater. The GCDs are created through special law by the Texas Legislature or by administrative procedures through the Texas Commission on Environmental Quality (TCEQ). The GCDs are authorized with powers and duties that enable them to manage groundwater resources, such as conservation, preservation, protection, recharging, and prevention of waste of the groundwater resources within their jurisdictions.

The GCDs are governed by an elected or appointed board of directors, having three primary GCD authorities: permitting water wells, developing a comprehensive management plan and adopting the necessary rules to implement the management plan. TCEQ has exclusive jurisdiction for the creation of GCDs and the dissolution of GCDs under specific circumstances.

Texas Water Development Board’s (TWDB) Groundwater Database. This database contains information on selected water wells, springs, oil/gas tests, water levels and water quality. Brackish Groundwater.Website Link: https://www.twdb.texas.gov/groundwater/

An MSD is an official state designation given to property within a municipality or its extraterritorial jurisdiction that certifies that designated groundwater at the property is not used as potable water, and is prohibited from future use as potable water because that groundwater is contaminated in excess of the applicable potable-water protective concentration level. The prohibition must be in the form of a city ordinance, or a restrictive covenant that is enforceable by the city and filed in the property records.

An MSD is an official state designation given to property within a municipality or its extraterritorial jurisdiction that certifies that designated groundwater at the property is not used as potable water, and is prohibited from future use as potable water because that groundwater is contaminated in excess of the applicable potable-water protective concentration level. The prohibition must be in the form of a city ordinance, or a restrictive covenant that is enforceable by the city and filed in the property records.