Additional Resources

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Welcome to RI DEM’s Onsite Wastewater Treatment System (OWTS) Permit Application Search. This page searches permitting activities administered by the State for OWTS permit applications received after 1968. Permits are designed to meet requirements of RI State Law to ensure the proper location, design, installation and maintenance of OWTS used for the treatment and dispersal of wastewater, which is an essential part of protecting public health and our water resources. For additional information, please visit our website at

Enter search criteria below to view historical information or permit status for all applications. When viewing the details of a conformed permit, you may Download PDF images (if available) or Generate a Certificate of Conformance for all permits if one has been granted by the DEM.

State of Rhode Onsite Wastewater Treatment System (OWTS) Office of Water Resources DEM Website

arrowSeptic System Permit Search

The UST Management Program oversees the registration, modification, and closure of Underground Storage Tanks (UST program) as well as the cleanup of Leaking Underground Storage Tanks (LUST program).

State of Rhode DEM Underground Storage Tank Management Program Website

   Underground Storage Tank Management Program

 arrowRules and Regulations for Underground Storage Facilities Used for Regulated Substances and Hazardous Materials (250-RICR-140-25-1)

State of Rhode DEM Online Permit & Licenses Website

arrow    DEM-online-services-licenses

arrowDEM - Map  (This site contains environmental regulatory data that DEM has compiled and collected for many years.)