Water / Wastewater

The Water-Wastewater Utility is owned by the City of San Marcos and operates a high quality wastewater treatment plant and water system rated superior by the State of Texas. Roughly 2/3 of the City’s water comes from surface water treated at the City’s Water Plant under the operation of the Guadalupe-Blanco River Authority. The utility promotes water conservation and works closely with agencies such as the GBRA, the Edwards Aquifer Authority, the Texas Commission on Environmental Quality and other organizations to develop regional water policies.

To report a water leak, call 512-393-8010.

The City of San Marcos strives to protect the Edwards Aquifer Recharge Zone which lies under the western portion of the city.

  1. City’s “Month of Service” Final Week: Hays County Food Bank Donations

    The City of San Marcos, with assistance from the Veterans Affairs Advisory Committee and local veteran organizations, will conclude their month of service opportunities with “Donate to the Hays County Food Bank”... Read on...
  2. Wonder World Dr and Hunter Rd Improvements Begin Nov. 30

    The City of San Marcos Engineering and Capital Improvements Department will begin multimodal improvements for pedestrian, bike, and striping access at the intersection of Wonder World Drive and Hunter Road on Monday, Nov. 30. . Read on...
  3. San Marcos Police Investigates Third Homicide of 2020

    San Marcos Police responded to The Lodge Apartments, 1975 Aquarena Springs Drive, on Tuesday evening for calls of gunshots which ultimately resulted in a murder investigation... Read on...
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