The quality of leak detection technologies employed by Leighton O’Brien for the monitoring and testing of storage tanks and lines has been independently tested and verified by appropriate third party organisations. Our technologies are certified to the common standards required by regulatory bodies.


Ken Wilcox & Associates

This website provides copies of third-party certifications and evaluation reports by leak detection manufacturers that have decided to make them available for download. Copies of listings by the EPA’s National Workgroup on Leak Detection Evaluations (NWGLDE) are also available for all KWA certified methods.


National Work Group

NWGLDE is an independent Work Group comprised of 11 members, 10 of whom represent various states and one from the U.S. EPA.  All our members are state or federal employees whose full time job is to regulate storage tanks for their agency’s regulatory program.  We appreciate these agencies’ willingness to allow our members to participate in the NWGLDE.


Leighton O’Brien is proud to be affiliated with the following organisations:


Petroleum Equipment Institute (USA)


Australian Association of Convenience Stores


Australian Convenience and Petroleum Marketers Association


Service Station Association

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