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Public Water System (PWS) Official,

Texas Commission on Environmental Quality (TCEQ) would like to provide you with important information and resources to prepare your public water system (PWS) for approaching winter weather to ensure safe drinking water.

TCEQ recommends that PWSs prepare for freezing conditions by ensuring all critical water system components are protected through insulation or other measures.

For water systems with generator(s), verify the generator will start and plan to maintain sufficient fuel on hand to last the duration of the weather event, and if using diesel maintain an anti-gelling additive. Please review the guidance attached to this email to help you prepare for severe winter weather.

TCEQ has additional guidance for water systems to prepare for a natural disaster located on our Preparing your PWS for a Natural Disaster webpage.

If you have questions or need immediate assistance, please contact the TCEQ regional office that serves your county. Please use the TCEQ’s emergency hotline, after business hours, at 1-888-777-3186.

Boil water notices must be issued when distribution pressure drops below 20 pounds per square inch or if disinfection equipment is not functioning properly to maintain the minimum residual (0.2 mg/L free chlorine or 0.5 mg/L chloramines). Should your public water system need to shut down or issue a Boil Water Notice please notify the TCEQ regional office that serves your county and by e-mailing documentation to This email address is being protected from spambots. You need JavaScript enabled to view it.. A quick reference guide for issuing a Boil Water Notice is attached to this email.

Forms for issuing Boil Water Notices are located at:https://www.tceq.texas.gov/drinkingwater/boilwater.html.

If you need emergency equipment or supplies, such as a generator or bottled water, please contact your local emergency manager (e.g. city mayor, county judge or emergency management coordinator).

  • Your county or local emergency-management coordinator may be able to help obtain assistance for your water or wastewater system. Contact your local government officials (city mayor, county judge, or emergency management coordinator). Often, the county judge may also serve as the emergency-management coordinator for the area. If not, that office can tell you who to contact. List of county judges.
  • Information on state emergency management, including the state District Coordinator is available through the Texas Division of Emergency Management.

Additional assistance is available through the Texas Water/Wastewater Agency Response Network (TXWARN). The mission of the TXWARN is to support and promote statewide disaster response and mutual aid assistance for public and private water and wastewater utilities. TXWARN can be contacted at 866-989-9276 or This email address is being protected from spambots. You need JavaScript enabled to view it..

For more information, please refer to TCEQ’s “Public Drinking Water Systems: Responding to a Disaster” (RG-517b) regulatory guidance located athttps://www.tceq.texas.gov/publications/rg/rg-517b.html.

The TCEQ is committed to assisting you to prepare and respond to severe winter weather events. If you need technical assistance with treatment or repair, please contact the Texas Optimization Program at This email address is being protected from spambots. You need JavaScript enabled to view it..

For questions concerning temporary emergency authorizations for treatment or repair relating to the weather event, please contact the Plan Review Team at This email address is being protected from spambots. You need JavaScript enabled to view it..