Weston & Sampson, established in 1899, is a family of companies offering environmental and infrastructure services in the Northeastern region of the United States. The parent company, Weston & Sampson Engineers, provides engineering consulting to both public and private sectors, while Weston & Sampson Services offers preventive maintenance and emergency on-call operation and maintenance services for water and wastewater treatment systems and facilities. Water & Waste Equipment, established in 2003, provides water and wastewater equipment sales and support. The company is located in Peabody, Mass.