In 2017 the Californian Marine Invasive Species Act MISA required strict ballast water treatment performance standards from 1 January 2020. These were significantly more stringent, compared to the USCG Final Rule and IMO International Ballast Water Management Convention.
Nevertheless, consultancy Patriot Maritime Compliance LLC informs that the implementation of these standards will be pushed back to 1 January 2030.
In addition, the target of 'no detectable living organisms' has been pushed back from 2030 to 2040.
Therefore, the Californian authorities require full compliance with the USCG ballast water regulations.