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.

Help keep water costs down--report a leak.

Report water waste at 512-393-8360.
The City of San Marcos strives to protect the Edwards Aquifer Recharge Zone which lies under the western portion of the city.
  1. Early Voting Begins Oct. 23

    Early voting for the Nov. 7, 2017, local and state elections begins Monday, Oct. 23 at designated early polling places. Read on...
  2. Open House on Transportation Master Plan Slated Oct. 18

    e City’s Engineering Department will hold a Transportation Master Plan open house on Oct. 18, 2017, at 5:30 p.m. at the San Marcos Activity Center, 501 W Hopkins. Read on...
  3. Celebrate Fall with Farmer Fred’s Harvest Fall Carnival

    The City of San Marcos Parks and Recreation Department encourages community members and visitors of all ages to join them on Sat., Oct. 28 from 6-9 p.m. at San Marcos Plaza Park, 206 N C M Allen Parkway. Read on...
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