About Us


GEOSCIENCE Support Services Inc. is a leading groundwater consulting firm. We understand groundwater resource management and Sustainable Groundwater Management Act (SGMA) requirements. We work with water utilities, government agencies, and private industry to overcome their most complex challenges in developing, managing and preserving groundwater resources.

About Us

Our Mission

We provide clients with the ‘hydrologic truth’— giving them the best path forward in doing so.

Our History

Founded in 1978 by Dr. Dennis Williams, GEOSCIENCE was one of the first hydrogeology firms in California established to provide consulting services to the groundwater industry. We are a trusted advisor to industry professionals and stakeholders—delivering solutions to groundwater supply, development, management and protection challenges that meet the changing needs of our clients.

Our Values

We take care of our clients by taking care of our employees.