The group's principal activity is to plan and design water, wastewater, and recycled water systems. Specific customers of the group include Pinn Brothers, Oro Loma Sanitary District, Delta Diablo Sanitation District, Livermore Water Reclamation Plant, Clearlake Oaks County Sanitation District, City of Petaluma, Carmel Area Wastewater District City of Hayward, City of Morgan Hill and City of Rio Vista. The group operates from the United Stated.