Yes, Tri-County Health Department (TCHD) requires that all on-site wastewater treatment system (OWTS) installers be licensed with our Department. In order to obtain a license, TCHD must receive a completed application, affidavit of citizenship, and license fee. In addition, the applicant must take and pass the system’s contractor exam. The exam covers various sections of the Onsite Wastewater Treatment System Regulations and you can take an exam at one of our four Environmental Health offices during business hours (8am-5pm M-F, closed from noon – 1:00pm). The license is valid from January 1 to December 31 and must be renewed every year. Starting October 1, 2019, all licensed installers will be required to attend a National Association of Wastewater Technicians (NAWT) Installer Course and obtain a certification prior to receiving a TCHD license.