The Onsite Wastewater Treatment System (OWTS) Program (formerly known as the Individual Sewage Disposal System (ISDS) Section) regulates the location, design, construction and maintenance of onsite wastewater treatment systems used for the treatment and dispersal of wastewater.
This page searches for an Application Number for records that can be viewed and downloaded as a PDF image. The search includes all files conformed between April 9, 1968 and 1990. (Conformed files have received a certificate of conformance, which means that the ISDS installed appears to substantially conform to the design and other requirements as indicated on the application, associated plans and specifications; and is approved for use.) Records submitted after 1990 can be searched on the RIDEM website at:
OWTS Permit Search (after 1990).