Regent Seven Seas Cruises and Oceania Cruises are adopting a water purification and distribution system that will lead to the elimination of plastic water bottles on their ships. 

The lines will use the Vero system for still and sparkling water. 

Regent said the change will take place in two phases during the coming year, with the first phase adding Vero onboard water service in cabins, restaurants, lounges and bars. The transition will be made on four ships by June 18.

In phase two, guests will get a reusable Vero water bottle for personal use.

A similar process will take place on Oceania's six ships.

Regent and Oceania said they will eliminate an estimated 2 million and 3 million plastic water bottles, respectively, as a result.

Both lines are owned by Norwegian Cruise Line Holdings.

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