Is the Panama Canal's ban on exhaust gas scrubber wastewater (EGCS) discharge from ships transiting the global chokepoint a good thing or a bad thing?

The answer to that question depends on whom you ask.

Backers of the IMO 2020 devices are not so happy about the Panama Canal Authority (ACP) decision, while environmentalists applaud it heartily.

"These flawed systems have proven unreliable in operation to deliver the air pollution control for which they are designed, and have repeatedly failed to meet water quality standards,"