A First Nation on Vancouver Island is grappling with a loss of potable water after something — possibly a tsunami surge — damaged its underwater supply line on Monday. Ucluelet First Nation declared a state of emergency this week, banning the use of water for everything except flushing toilets, after a barge towing a log boom severed the line in the inlet between Ucluelet and the Indigenous community of Hitacu. “It’s challenging but we’re working through it,” said Ucluelet First Nation president Charles McCarthy. “Citizens are being informed about our situation as it progresses.” Right now, a tsunami surge following the violent eruption of an underwater volcano near the Tonga Islands is being investigated as a possible cause.