Thalenhorststrasse 15 A
28307 Bremen, Germany
Phone: +49 421 53705 - 0
Fax: +49 421 53705 - 440

Managing Marine Water since 1975

Bilge Water Treatment

RWO's classic

More than 14,000 of RWO's oily water separators are on their way over the seven seas. Separating oil from water is the business we've grown up with - and clearly know how to do it. Choose RWO and you can sleep well!

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Wastewater Treatment

Ensure Safe Water on Board

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Fresh Water & Process Water Treatment

To Enjoy Every Drop


Multi-local presence


  • Relaxing in full sail

    On Thursday, July 10th RWO set sail together with partners and friends of the company. Under full sail we enjoyed fantastic views on the river Elbe, crossing between the famous dry dock "Elbe 17" and cruise ships leaving the port of Hamburg.

  • New agent in Japan

    RWO welcomes Japanese engineering company N.Y. Co. as our new agent for Japan!

    The company was founded 1976 by Mr. Noriyoshi Yoshikawa, and has always had a strong technical background. Shinya Yoshikawa, today's president of N.Y. Co. leads the company with excellent knowledge, aiming towards high satisfaction of our customers.

  • Russian River Register certifies RWO's oily water separator

    RWO's oily water separator SKIT-S DEB has gained approval from Russian River Register RRR and therewith adds another inportant certification to a long row of successes for RWO's classic.

    More than 14,000 ships have already been equipped with RWO's oily water separators since RWO started its business in 1975. As its predecessors the SKIT/S-DEB type uses a combination of highly effective open porous coalescer with automatic backfl ushing, together with a second stage emulsion breaking oil and hydrocarbon polisher.
    The periodical backfl ushing keeps the coalescer surface clean and offers long lasting operation without attendance and lowest maintenance, according to IMO Resolution MEPC.107(49).
    The excellent and long experience with the RWO coalescing type oily water separator guarantees a high performance standard.

AMS certificate granted to CleanBallast

The United States Coast Guard has granted the Alternate Management System (AMS) certificate to CleanBallast.

CleanBallast has been awarded one of the most important certificates of the global market for ballast water treatment. The AMS certificate represents a first step towards the full USCG-approval to be achieved by RWO as one of the first companies.

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