Proper operation and maintenance are key to assuring the longevity of onsite systems. This training school was developed to teach individuals how to provide quality service to owners of advanced onsite systems. Article 3 of 90A of the North Carolina General Statutes and the state wastewater rules require some wastewater treatment systems such as low pressure pipe (LPP) systems, drip irrigation systems, pressure-dosed sand filter systems, and peat biofilter systems to be operated by certified subsurface system operators.