Treatment Plant Operator (TPO) serves licensed operators, managers and superintendents at municipal wastewater and water treatment facilities across North America.
TPO is owned and operated by COLE Publishing, Inc. COLE was established in 1979 in the heart of Wisconsin's Northwoods, and has grown to become North America's largest publisher of print and digital magazines serving the water and wastewater industries. Our pride and success stem from the personal relationships we've forged and maintained during more than 40 years of working with our loyal friends and colleagues in the business, sparking ideas and shaping agendas in these essential industries.
