Coronado’s tony seaside community and working-class Imperial Beach could be headed for a major reckoning with the sewage continuing to spilling over the border from Tijuana.

Beach closures that were once thought of as largely a wintertime occurrence now appear poised to become a year-round phenomena in San Diego’s South Bay.

However, that’s not because the cross-border pollution from Baja California’s overtaxed and crumbling wastewater system has dramatically escalated, according to county officials.