Contact Us

Need help with your utility? We are happy to talk with you and take on new clients. When experience, honesty and integrity matter, the company to contact is OMMS.

General Information

Mailing Address:
P.O. Box 701201
San Antonio, TX 78270

Office Hours:
8:30am – 4:30pm
Monday through Friday

Contact Us by Phone

If you have a life threatening emergency, please dial 911.

If you have a sewer emergency, such as a water quality issue, a broken water main, or a sewer overflow please call:

Business hours: (210) 702-2400
After hours: (726) 203-1489

Be included in our notifications

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Holiday schedule

Office will be closed on the following Holidays:

  • January
    • New Year’s Day
    • Martin Luther King, Jr. Day
  • February
    • President’s Day
  • May
    • Memorial Day
  • July
    • Independence Day
  • September
    • Labor Day
  • November
    • Veterans Day
    • Thanksgiving Day and Friday After
  • December
    • Christmas Eve (1/2 day) & Christmas Day
    • New Year’s Eve