You are here


The Pipeline and Hazardous Materials Safety Administration (PHMSA) is dedicated to providing Indian tribes (tribes) with technical assistance to help in their efforts to improve the safety and efficiency of tribal pipeline systems. Affirmed in treaties, Supreme Court decisions, and executive orders, PHMSA has a government-to-government relationship with Indian tribal governments, and provides technical assistance as requested.

DOT is committed to ensuring that information is available in appropriate alternative formats to meet the requirements of persons who have a disability. If you require an alternative version of files provided on this page, please contact

Submit Feedback >