Gulf of Mexico - (Deez Mess): "The design came to me in a dream in 1995," Costner told the House Energy and Commerce Committee this week.
"We'd been filming in the Pacific waters off Hawaii using a derelict replica of the Exxon Valdez," Costner explained.
"One evening after a gruelling twelve hour shoot I sat down with Dennis Hopper - he played The Deacon, captain of the Deez's - for a coupla beers at the end of long, tiring day.
"Must've just drifted off to sleep in mid-Bud when wham! It came to me in a flash! The design of a futuristic water/oil separator centrifuge that would one day save the planet!
"That's how the V20 was born."
Costner and his brother bought out the fledgeling US Government-owned Ocean Therapy Solutions in 1995 and invested heavily in the design thrown up by his imagination during the Waterworld shoot.
The centrifuges separate up to 600,000 gallons of oil/water mix per day and are about to return more than double of the actor's $20 million 15 year investment after BP bought 32 of them this week.
BP Chief Operating Officer Doug Suttles said this week the devices would be deployed in the Gulf of Mexico spill close to the wellhead rupture on the seabed.
The company estinmates up to 128,000 barrels of oily water will be processed daily by the 4,500lb machines that will be situated on barges close to the Deepwater Horizon rig remains.
BP remains bullish it can complete the total salvage operation in the Mexican Gulf which has been blighted by the April 20 wellhead blowout.
And in a related move Universal Studios - which made the original 1995 Waterworld movei - is in discussions with Costner's centrifuge company for the rights to a new tie-in novel and video game based on the V20 relief operation.
A movie about the Deepwater Horizon disaster is also in the wings.