The data presented are for illustration purposes only. Care has been taken to accurately present data reported to US DOT PHMSA and US EPA. However, only one company was selected for a pipeline system or a compressor station where two or more companies may jointly own the assets thus some companies may be missing data in their tallies. Please contact TWC for further explanation or any questions.


* Cathode protected coated steel mileage was reported but not included in graph.