Deepwater has pioneered the TankGard impressed current cathodic protection system for internal tank corrosion. Since the mid-1980s, TankGard systems have been addressing the inherent corrosion issues of harsh-environment, upstream-process tanks and vessels, making internal corrosion prevention for tanks much easier to implement and monitor. In the San Joaquin Valley oilfields of California, where produced water is hot and sour with a high tendency for scaling and sludging, Deepwater's TankGard system worked where others didn’t, providing up to ten years of reliable corrosion protection for the tanks' interiors.