Questions or Comments: wqap@tceq.texas.gov

Available Water Quality General Permits

View a list of general permits that authorize the discharge of wastewater and/or stormwater into waters in the state.

The discharge of wastewater and certain types of stormwater into or adjacent to water in the state (HTML) must be authorized by the Texas Commission on Environmental Quality (TCEQ). This authorization may come in the form of an individual discharge permit or a general permit. Seeking authorization under a general permit is generally less time-consuming than authorization under an individual permit and usually requires fewer resources.

The status of general permits that are being renewed or amended will be discussed at quarterly Water Quality Advisory Workgroup meetings, which are open to the public.

Renewal of the Evaporation Pond General Permit No. WQG100000

The TCEQ is proposing to renew and amend the Evaporation Pond General Permit WQG100000, which authorizes wastewater generated by industrial or water treatment facilities to be disposed of by evaporation from surface impoundments adjacent to water in the state. The current permit expires on September 15, 2020. The comment period ended on March 30, 2020. The commission is expected to take action on the draft permit on September 9, 2020.

UPDATEWater Treatment Plant General Permit No. TXG640000

The TCEQ is developing a new general permit that would authorize the discharge of wastewater generated as a result of conventional water treatment at water treatment facilities into or adjacent to water in the state. The comment period ended on June 29, 2020. The commission is expected to take action on the draft permit on October 7, 2020.

Renewal of the Multi-Sector General Permit No. TXR050000

The TCEQ is proposing to renew and amend the Multi-Sector General Permit TXR050000, which authorizes discharges of stormwater from certain industrial activities. The current permit expires on August 14, 2021. The TCEQ is currently developing the draft permit.

NEW Renewal of the Aquaculture General Permit No. TXG130000

The TCEQ is proposing to renew and amend the Aquaculture General Permit TXG130000, which authorizes the discharge of wastewater from aquaculture facilities and other activities related to aquaculture into or adjacent to water in the state. The current permit expires on April 18, 2021. The TCEQ is currently developing the draft permit.

Amendment of the Hydrostatic Test Water General Permit No. TXG670000

The TCEQ is proposing to amend the Hydrostatic Test Water General Permit TXG670000, which authorizes the discharge of hydrostatic test water from new vessels; vessels which contained raw water, potable water, or elemental gases; or vessels which contained petroleum substances or waste related to petroleum substances. The primary purpose of the amendment is to allow discharges of hydrostatic test water from new and existing vessels into water in the state from crude oil and natural gas exploration, development, and production operations to be eligible for authorization under this general permit upon the TCEQ receiving approval from the U.S. Environmental Protection Agency (EPA) to regulate these activities. The draft permit is available for review and comment. The fact sheet contains additional information about the draft permit. The comment period will end on August 3, 2020.

The following Water Quality General Permits are available:

  • Aquaculture General Permit (TXG130000) (HTML), which authorizes discharges from aquaculture facilities and certain related activities.

  • Municipal Separate Storm Sewer System (MS4) (TXR040000) (HTML), which authorizes discharges of stormwater from certain small MS4s.

  • Multi-Sector General Permit (TXR050000) (HTML), which authorizes discharges of stormwater from certain industrial activities.

  • Construction General Permit (TXR150000) (HTML), which authorizes discharges of stormwater from construction activities.

  • Concrete Batch Plant General Permit (TXG110000) (HTML), which authorizes discharges from ready-mixed concrete plants, concrete products plants, and their associated facilities.

  • Petroleum Bulk Stations and Terminals General Permit (TXG340000) (HTML), which authorizes discharges from petroleum bulk stations and terminals.

  • Hydrostatic Test Water General Permit (TXG670000) (HTML), which authorizes the discharge of hydrostatic test waters.

  • Petroleum Contaminated Water General Permit (TXG830000) (HTML), which authorizes the discharge of water contaminated by petroleum substances.

  • Pesticides General Permit (PGP) TXG870000 (HTML), which authorizes the discharge of pesticides for the control of mosquitoes and other insects, vegetation and algae, animal pests, area-wide pests, and forest-canopy pests.

  • Concentrated Animal Feeding Operations (CAFO) General Permit (TXG920000) (HTML), which authorizes the discharge of manure, litter, and wastewater into or adjacent to water in the state from CAFOs.

  • Livestock Manure Compost General Permit (WQG200000) (HTML), which authorizes the disposal of wastewater generated from livestock manure compost operations by evaporation or irrigation.

  • John Graves Scenic Riverway Permit (TXG500000) (HTML), which authorizes discharges from certain quarries located in the John Graves Scenic Riverway.

  • Evaporation Pond General Permit (WQG100000) (HTML), which authorizes wastewater generated by industrial or water treatment facilities to be disposed of by evaporation from surface impoundments adjacent to water in the state.

  • Harris County On-site Wastewater General Permit (TXG530000) Adobe Acrobat PDF Document, which authorizes the discharge of wastewater from on-site treatment systems connected to single family residences located in Harris County, Texas.

Contact Wastewater program if you have questions.