Welcome to RIDEM's Sewage Disposal Historic Search

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).

Select a city or town from the list. Click SEARCH to view an index of conformed permits in that municipality.
Enter the 7-digit application number in the space provided. Do not use spaces or hyphens. Click DOWNLOAD PDF to view and print a PDF of the full permit file.

Check with the Town's Tax Assessor to learn the original property owner’s name, plat & lot, and the year the property was developed.
The first two digits of the Application Number are the year the permit was submitted.
Records may be indexed by Pole number, Route number, or off of a main road.