Yes, your water is safe. Menlo Park Municipal Water purchases all of its water from San Francisco Public Utilities Commission (SFPUC), which comes from the Hetch Hetchy reservoir in the Yosemite Valley, surface water from local watersheds, and/or imported water from the Sunol Valley Water Treatment plant.
According to the World Health Organization (WHO) and the American Water Works Association (AWWA), current treatment methods used by SFPUC are sufficient to disinfect water for contaminants, including COVID-19.