The Hetch Hetchy reservoir to the east of San Francisco plays a central part in supplying drinking water in California. The reservoir stores up to 442 billion liters of drinking water and provides for about 80% of the population in the San Francisco Bay Area. That’s 2.6 million people! The San Francisco Public Utilities Commission (SFPUC) is responsible for storing, regulating and checking the drinking water quality. The SFPUC was unsatisfied with their previous pump type and was looking for an alternative. SEEPEX won them over.