Coronado’s northern beaches are open again after the city’s entire shoreline closed over Memorial Day weekend as wastewater from the ongoing Tijuana sewage crisis pushed bacteria into coastal waters. The reopenings came as Mexico completed work on its two-phase International Collector project. … Mexico completed the second and final phase of its International Collector project on May 21. During the two phases of the construction, excess sewage was pushed into the Tijuana River, causing beach closures in Coronado in April and in May. However, Mexico used temporary bypasses to prevent about 75 million gallons of untreated sewage from entering the river during phase two, the US International Boundary and Water Commission (IBWC) said. The International Collector is a pipeline that carries raw sewage from Tijuana to treatment plants, and it was aging and prone to leaks. Mexico has now relined the pipeline.

Other Tijuana River news:

• NBC 7 (San Diego): How to take a self-guided tour of the ‘Toxic Tide’ in the Tijuana River Valley
• Chemical and Engineering News: Coastal aerosols contain wastewater pollutants