The City of San Marcos and the Vallecitos Water District partnered on a new project with funding from the San Diego County Water Authority and Metropolitan Water District of Southern California to encourage water conservation and reduce the use of plastic.

Five hydration stations have been installed in San Marcos parks to encourage the use of refilling reusable bottles during outdoor activities instead of using purchased bottled water. Both the City of San Marcos and the Vallecitos Water District are committed to reducing single-use plastics.