GCWA Office Locations

Administrative Office

  • Hours of Operation: M-F 7:30 AM – 4:30 PM
  • Physical & Postal Address: 3630 FM 1765, Texas City, Texas 77591
  • Telephone: 409-935-2438 (Office Hours)
  • Emergency Telephone: 409-682-0883 (After Hours)
  • Fax: 409-935-4156

Thomas S. Mackey Water Treatment Plant

  • Hours of Operation: Office M-F 7:30 AM – 4:00 PM, Operations 24-7
  • Physical Address: 4001 5th Avenue North, Texas City, Texas 77591
  • Postal Address:  3630 FM 1765, Texas City, Texas 77591
  • Telephone: 409-948-6415 (Office Hours)
  • Emergency Telephone: 409-797-4917 or 409-682-0883 (After Hours)
  • Fax: 409-943-4522

Canal Division Office

  • Hours of Operation: M-Th 6:30 AM – 5:00 PM
  • Physical Address: 1500 Highway 6 (TX-6), Alvin, Texas 77511
  • Postal Address:  3630 FM 1765, Texas City, Texas 77591
  • Telephone: 281-331-3137 (Office Hours)
  • Emergency Telephone: 409-797-4917 or 409-682-0883 (After Hours)
  • Fax: 281-331-3228