Three types of licenses are issued by the Onsite Wastewater Program (OSWW) including Basic, Combination, and Maintenance licenses. Licenses are issued on an annual basis with the licensing period starting on February 1st and expiring on January 31st. Renewal packets are due in the OSWW office by December 1st; renewals received after December 1st are subject to appropriate late fees. Please see the related item "Licensing Instructions" listed below for details on the licensing procedure.