About 143 million gallons of sewage spilled into the Tijuana River during a period of more than two weeks, said a report released Friday. 
No other sewage spill in the greater San Diego-Tijuana region has approached this magnitude in years, according to the environmental group Wildcoast.
The latest spill started around Feb. 2 and was not contained until Thursday, the U.S. section of the International Boundary and Water Commission said in its report. 
It apparently was caused by a rupture in a sewage collector pipe near the junction of Mexico’s Alamar and Tijuana rivers, the second of which drains into the Pacific Ocean on the U.S. side of the border. 
The author of the report, Steven Smullen, operations manager for the commission, could not be reached Friday evening.
Imperial Beach Mayor Serge Dedina, who shared the report with the Union-Tribune after receiving a copy of it, criticized federal officials on both sides of the border for not alerting …
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