On the morning of the twenty seventh, cooling water flowed out from a beer manufacturing facility in Nago City, Okinawa Prefecture, turning the close by river and fishing port pink. The trigger is believed to be that the cooling water contained a meals additive coloured pink with meals coloring, and the corporate is investigating intimately.
Source
Cooling water leaks from Okinawa beer manufacturing facility Nearby rivers and fishing ports are dyed pink | NHK
