Scrubber Industry Publishes New Research on Open-Loop Environmental Impact by Ship & Bunker News Team Thursday June 10, 2021 Scrubber industry body the Exhaust Gas Cleaning Systems Association (EGCSA) has funded new research on the environmental impact of washwater from open-loop models of the emissions-cleaning systems. Engineering consultancy DHI has prepared a report on 'ecotoxicity testing and risk assessment of washwater from open-loop scrubbers' on behalf of the EGCSA, the organisation said in an emailed statement on Thursday. The research was conducted in accordance with the IMO GESAMP guidelines. The study evaluated the effects of washwater on the marine aquatic environment, finding no toxicity on fish and some effects in the short term with algae and on crustaceans at high concentrations.