The loss of product in a pipeline can occur for a variety of reasons. In many parts of the world today theft is a major cause of product loss and one that can require sophisticated techniques to combat. At the same time Environmental Health & Safety (EH&S) regulations are also on the rise. Because of these two phenomena companies can get hit with costs from both the loss of their product and the costs to the environment of undetected leaks from theft or other causes. This article will examine one way that pipeline companies can safeguard their assets and the environment while positively impacting their bottom line. The use of advanced model-based leak detection systems, has helped companies guard against theft and has also been able to help avoid costly EH&S fines.