CWS is a locally owned and operated small business based out of Castroville California serving the Central Coast and with an operations branch serving the South Bay in San Jose. At CWS we provide California State Certified Operator Services for Water Treatment, Wastewater Treatment and Distribution Operations. We specialize in complete Water and Wastewater System Operation, Maintenance, and Management and hold the proper certification and insurance to operate and maintain plants and facilities of any size or type.