DIAL 911

If you have an emergency


The Harris County Emergency Services District 11 Communication Center (Control) is staffed 24/7, 365, by Emergency Medical Dispatchers. ESD 11’s Control team gives life-saving instructions while callers await the arrival of an ambulance. They provide critical information to the responding medical professionals, as well as offer support to the 911 caller.

Control serves as a Secondary Public Safety Answering Point (SPSAP) in the Greater Harris County 9-1-1 network. Our Control team is trained by and certified by the International Academy of Emergency Dispatch.


Any time a person believes that urgent medical care is required, especially if the situation is potentially life-threatening, call 9-1-1 immediately! Some examples of life-threatening emergencies include:

  • Chest Pain
  • Sudden Loss of Consciousness
  • Weakness on One Side of your Body
  • Severe Burns
  • Seizure
  • Coughing or Vomiting Blood
  • Allergic Reactions
  • Shortness of Breath
  • Sudden Slur of Speech or Difficulty Speaking
  • Trauma
  • Poisoning
  • Severe Stomach Pain

If you believe the sick or injured person’s condition could become life-threatening on the way to the hospital, there is a delay in getting to the hospital, or moving the person could cause further injury, call 9-1-1 immediately.


Stay calm when calling 9-1-1. Be ready to answer questions from the 9-1-1 dispatcher:

  • The location of the emergency. If you do not know the address, look for landmarks, street signs, or buildings.
  • The phone number you are calling from.
  • Be prepared to repeat the address or location and the phone number you are calling from.
  • Details about the medical emergency and details about the patient experiencing the medical event.


We are grateful to work alongside many different partner agencies ranging from law enforcement, fire departments, and other EMS organizations.